104 results on '"Modelos dentários"'
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2. Occlusion development after premature loss of deciduous anterior teeth: preliminary results of a 24-month prospective cohort study.
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NADELMAN, Patricia, Amaral VARGAS, Eduardo Otero, Artemio MARAÑÓN-VÁSQUEZ, Guido, Lúcia VOLLÚ, Ana, Melo PITHON, Matheus, Regal de CASTRO, Amanda Cunha, and Cople MAIA, Lucianne
- Abstract
Copyright of Dental Press Journal of Orthodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2024
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3. Anterior Open-Bite Treatment with Lingual Spurs and Chincup: a Prospective, Randomized Digital Model Study.
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Fell Bublitz, Tieni Carla, Freire Fernandes, Thais Maria, Pedron Oltramari, Paula Vanessa, Rodrigues de Almeida, Marcio, Rodrigues Almeida-Pedrin, Renata, de Miranda Ladewig, Victor, and de Castro Ferreira Conti, Ana Claudia
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TREATMENT of malocclusion , *THREE-dimensional imaging , *ORTHODONTIC appliances , *ALVEOLAR process , *DIGITAL health , *ORTHODONTICS , *TREATMENT effectiveness , *T-test (Statistics) , *DENTAL casting , *COMPARATIVE studies , *PRE-tests & post-tests , *RANDOMIZED controlled trials , *DESCRIPTIVE statistics , *DENTAL arch , *INTRACLASS correlation , *DENTITION , *STATISTICAL sampling , *LONGITUDINAL method , *EARLY medical intervention , *EQUIPMENT & supplies , *EVALUATION - Abstract
This prospective study aimed at assessing dentoalveolar changes in digital models in patients with anterior open-bite, treated with two protocols: lingual spurs and chincup. The sample consisted of 41 patients (27 girls and 14 boys) aged 7-10 years (mean age 8.37 years) during mixed dentition with anterior open-bite (mean -3.43mm), who were treated for one year. The patients were randomly divided according to the therapy applied: Group 1 (n=23) treated with lingual spurs, and group 2 (n=18) treated with prefabricated chincup. The plaster models were scanned, reproducing a three-dimensional scanned image, on which measurements were taken, at T1 (immediately before treatment) and T2 (one year after the begining of treatment). Transverse changes, length and perimeter of the upper and lower dental arches, overjet and overbite, as well as inclination of central incisors were assessed. Intraclass Correlation Coefficient (ICC) and Bland-Altman method were applied to verify the intra-examiner error. The results were analyzed through paired and independent t tests at 5% significance. After one year of treatment, all the variables were statistically changed, except for perimeter and length of upper and lower arches, upper central incisor proclination, and overjet. The changes (T2-T1) between groups showed similar results. It was concluded that both protocols were similar after one year of early treatment of anterior open-bite. [ABSTRACT FROM AUTHOR]
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- 2023
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4. Comparison of the perception of orthodontists and general clinicians on the use of digital dental models in the city of Aracaju/Sergipe.
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dos Santos MENEZES, Liciane, Ribeiro dos SANTOS, Lucideval, Lima dos SANTOS, Marcos Antônio, Ribeiro COUTO, Graziane, Santos de SANTANA, Francielle, and Mitsunari TAKESHITA, Wilton
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URBAN renewal ,ORTHODONTISTS ,MEDICAL personnel ,STATISTICAL software - Abstract
Copyright of RGO: Revista Gaúcha de Odontologia is the property of RGO: Revista Gaucha de Odontologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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5. Confiabilidade de um método de medição digital para o Sistema Objetivo de Avaliação do Board Brasileiro de Ortodontia: um estudo piloto.
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MIRANDA, Paula Martins Bravo, FERNANDES, Luciana Quintanilha Pires, SEVILLANO, Manuel Gustavo Chavez, de Assis Ribeiro CARVALHO, Felipe, and JUNIOR, Jonas CAPELLI
- Abstract
Copyright of Dental Press Journal of Orthodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2022
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6. Validade e reprodutibilidade de método baseado em trigonometria para mensuração da movimentação dentária em modelos digitais.
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SANTOS, Renata de Faria, SANTOS, Bruno Fernandes de Oliveira, FERNANDES, Victor Miranda, CALDAS, Luciana Duarte, BALDO, Taiana de Oliveira, and DOMINGUEZ, Gladys Cristina
- Abstract
Copyright of Dental Press Journal of Orthodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
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7. Dimensional stability of alginate molds scanned at different storage times.
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Daneu, Gabriel D., Vasconcelos, Juliana de B., Oltramari, Paula V. P., de Almeida, Marcio R., Guiraldo, Ricardo D., and Fernandes, Thais M. F.
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ALGINIC acid ,MOLDING materials ,ALGINATES ,DENTAL impression materials ,MOLDS (Casts & casting) - Abstract
Copyright of Acta Odontologica Latinoamericana: AOL is the property of Acta Odontologica Latinoamericana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2020
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8. Zocalamento virtual de modelo: êxito ou viés?
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ANDRÉ, Cristiane B.
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Copyright of Revista Clínica de Ortodontia Dental Press is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2020
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9. Os modelos ortodônticos digitais são confiáveis? Uma revisão sistemática
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Matheus Melo Pithon, Leticia Sant'Anna, Ana Andrade, Orlando Tanaka, Lucianne Cople-Maia, Marcela Magno, Camila Amorim, and Tarcila Santana Matos
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Modelos dentários ,Imagem tridimensional ,Ortodontia. ,Medicine (General) ,R5-920 - Abstract
Introdução: os modelos digitais são alternativas para o uso de modelos ortodônticos em gesso. Devido a sua importância no dignostico, faz-se necessário averiguar a precisão dos softwares modelos ortodônticos digitais disponiveis. Objetivo: evidenciar qual software de modelos ortodônticos digitais possui maior confiabilidade. Material e métodos: foi realizada busca sistemática nas seguintes bases de dados eletrônicas: Scopus, PubMed, Web of Science, Embase e Cochrane, Grey Literature e Clinical Trials, sem limitações quanto ao ano de publicação ou idioma. Foram incluídos estudos laboratoriais que utilizaram softwares destinados a geração de modelos ortodônticos digitais, comparando-os com modelos ortodônticos em gesso. Após seleção por título e resumo, os artigos potencialmente elegíveis foram lidos na íntegra. A qualidade metodológica e o risco de viés dos artigos incluídos foram avaliados de acordo com as descrições dos modelos, técnicas de medição e análises estatísticas. A qualidade metodológica foi classificada em alta, moderada ou baixa. Resultados: 13.333 artigos foram encontrados nas bases de dados utilizadas. Após a aplicação dos critérios de elegibilidade e remoção de duplicações, restaram apenas 41 artigos. 29 foram considerados de qualidade moderada e 12 de alta qualidade. A classificação quanto à confiabilidade variou de menos confiaveis, equivalentes e a mais confiaveis. Apresentando diferenças estatisticas em suas mensurações (p
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- 2019
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10. Alterações, imediatas e a longo prazo, do tratamento da maloclusão de Classe II 1? Divisão de Angle.
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Mascarenhas Lima, Vanessa, Bastos Oliveira, Márcio, Lima da Fonte, Tiago Fonseca, Braga Rêgo, Emanuel, Jorge Vogel, Carlos, and Martins de Araújo, Telma
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DENTAL arch ,LENGTH measurement ,HEADGEAR ,MALOCCLUSION - Abstract
Copyright of Stomatos is the property of Revista Stomatos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
11. Precision and accuracy of four current 3D Printers to achieve models for Fixed Dental Prosthesis.
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Reis, Bianca S., Portella, Fernando F., and Rivaldo, Elken G.
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DENTURES ,3-D printers ,PHOTONS - Abstract
Copyright of Acta Odontologica Latinoamericana: AOL is the property of Acta Odontologica Latinoamericana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
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12. Reliability of Bolton analysis evaluation in tridimensional virtual models
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Marianna Mendonca Brandão, Marcio Costal Sobral, and Carlos Jorge Vogel
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Diagnóstico por computador ,Modelos dentários ,Imagem tridimensional ,Dentistry ,RK1-715 - Abstract
Objective: The present study aimed at evaluating the reliability of Bolton analysis in tridimensional virtual models, comparing it with the manual method carried out with dental casts.Methods:The present investigation was performed using 56 pairs of dental casts produced from the dental arches of patients in perfect conditions and randomly selected from Universidade Federal da Bahia, School of Dentistry, Orthodontics Postgraduate Program. Manual measurements were obtained with the aid of a digital Cen-Tech 4"(r) caliper (Harpor Freight Tools, Calabasas, CA, USA). Subsequently, samples were digitized on 3Shape(r)R-700T scanner (Copenhagen, Denmark) and digital measures were obtained by Ortho Analyzer software.Results:Data were subject to statistical analysis and results revealed that there were no statistically significant differences between measurements with p-values equal to p = 0.173 and p= 0.239 for total and anterior proportions, respectively.Conclusion:Based on these findings, it is possible to deduce that Bolton analysis performed on tridimensional virtual models is as reliable as measurements obtained from dental casts with satisfactory agreement.
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- 2015
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13. Periodontal and dental effects of surgically assisted rapid maxillary expansion, assessed by using digital study models
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Danilo Furquim Siqueira, Mauricio de Almeida Cardoso, Leopoldino Capelozza Filho, Dov Charles Goldenberg, and Mariana dos Santos Fernandes
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Ortodontia ,Periodontia ,Técnica de expansão palatina ,Modelos dentários ,Dentistry ,RK1-715 - Abstract
OBJECTIVE: The present study assessed the maxillary dental arch changes produced by surgically assisted rapid maxillary expansion (SARME). METHODS: Dental casts from 18 patients (mean age of 23.3 years) were obtained at treatment onset (T1), three months after SARME (T2) and 6 months after expansion (T3). The casts were scanned in a 3D scanner (D-250, 3Shape, Copenhagen, Denmark). Maxillary dental arch width, dental crown tipping and height were measured and assessed by ANOVA and Tukey's test. RESULTS: Increased transversal widths from T1 and T2 and the maintenance of these values from T2 and T3 were observed. Buccal teeth tipping also showed statistically significant differences, with an increase in all teeth from T1 to T2 and a decrease from T2 to T3. No statistically significant difference was found for dental crown height, except for left first and second molars, although clinically irrelevant. CONCLUSION: SARME proved to be an effective and stable procedure, with minimum periodontal hazards.
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- 2015
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14. Dimensional Stability of Alginates Molds Tridimentionally Scanned.
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de Oliveira, Marciana Castanha, Borges, Thais Maira, Dias, Flaviana Alves, Oltramari-Navarro, Paula Vanessa Pedron, Poleti, Marcelo Lupion, and Fernandes, Thais Maria Freire
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ALGINATES , *BICUSPIDS , *COMPUTER software , *CUSPIDS , *DENTAL casting , *PHARMACEUTICAL gels , *MOLARS , *SCANNING systems , *THREE-dimensional imaging , *ONE-way analysis of variance , *INTRACLASS correlation - Abstract
Alginate is among the most used materials in dentistry to create teeth negative printing and reproduction. The goal of this study was to compare dimensional changes of alginate scanned impression materials. Thirty impressions of a standard typodont were performed using three types of alginate (Hydrogum 5; Jeltrate Plus and Avagel). The impressions were scanned by the scanner 3Shape R700T and scans were performed immediately after molding. The analysis of digital models were performed at OrthoAnalyzer 3D software. Measurements were carried out in relation to the transverse dimension (intercanine, interpremolares and intermolar). Method error was evaluated through the Intraclass Correlation Coefficient (ICC) and Bland-Altman. One-way ANOVA, Dunnet Post-test were used to compare the different groups in relation to Typodont (gold standard) for the different outcome variables. The data were tabulated in Statistical Package for Social Sciences version 20.0 and Minitab 17.0 softwares to compare groups. The significance level was 5%. The posterior transverse variables (D1PM, D2PM and DM) presented a statistically significant difference regarding the gold standard (Typodont) for the plaster models performed after the Avagel molding. In the digital models performed just after molding, only in DM, the Avagel material group presented values statistically higher than the control group. The alginates Hydrogum 5 and Jeltrate Plus presented dimensions closer to the gold standard. [ABSTRACT FROM AUTHOR]
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- 2018
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15. Tooth-size discrepancy: A comparison between manual and digital methods
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Gabriele Dória Cabral Correia, Fernando Antonio Lima Habib, and Carlos Jorge Vogel
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Diagnóstico por computador ,Modelos dentários ,Imagem tridimensional ,Dentistry ,RK1-715 - Abstract
INTRODUCTION: Technological advances in Dentistry have emerged primarily in the area of diagnostic tools. One example is the 3D scanner, which can transform plaster models into three-dimensional digital models. OBJECTIVE: This study aimed to assess the reliability of tooth size-arch length discrepancy analysis measurements performed on three-dimensional digital models, and compare these measurements with those obtained from plaster models. MATERIAL AND METHODS: To this end, plaster models of lower dental arches and their corresponding three-dimensional digital models acquired with a 3Shape R700T scanner were used. All of them had lower permanent dentition. Four different tooth size-arch length discrepancy calculations were performed on each model, two of which by manual methods using calipers and brass wire, and two by digital methods using linear measurements and parabolas. RESULTS: Data were statistically assessed using Friedman test and no statistically significant differences were found between the two methods (P > 0.05), except for values found by the linear digital method which revealed a slight, non-significant statistical difference. CONCLUSIONS: Based on the results, it is reasonable to assert that any of these resources used by orthodontists to clinically assess tooth size-arch length discrepancy can be considered reliable.
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- 2014
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16. Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion
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Adriano Porto Peixoto, Ary dos Santos Pinto, Daniela Gamba Garib, and João Roberto Gonçalves
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Ortodontia ,Cirurgia ortognática ,Má oclusão ,Modelos dentários ,Dentistry ,RK1-715 - Abstract
INTRODUCTION: This study assessed the three-dimensional changes in the dental arch of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusions at three different periods. METHODS: Landmarks previously identified on upper and lower dental casts were digitized on a three-dimensional digitizer MicroScribe-3DX and stored in Excel worksheets in order to assess the width, length and depth of patient's dental arches. RESULTS: During orthodontic preparation, the maxillary and mandibular transverse dimensions measured at the premolar regions were increased and maintained throughout the follow-up period. Intercanine width was increased only in the upper arch during orthodontic preparation. Maxillary arch length was reduced during orthodontic finalization, only. Upper and lower arch depths were stable in the study periods. Differences between centroid and gingival changes suggested that upper and lower arch premolars buccaly proclined during the pre-surgical period. CONCLUSIONS: Maxillary and mandibular dental arches presented transverse expansion at premolar regions during preoperative orthodontic preparation, with a tendency towards buccal tipping. The transverse dimensions were not altered after surgery. No sagittal or vertical changes were observed during the follow-up periods.
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- 2014
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17. Modelos digitais: como verificar clinicamente a forma da arcada dentária.
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Tavares, Alana, Braga, Emanuel, and Martins de Araújo, Telma
- Abstract
Copyright of Dental Press Journal of Orthodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
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18. Transversal changes in dental arches from non-extraction treatment with self ligating brackets
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Liliana Avila Maltagliati, Yasushi Inoue Myiahira, Liana Fattori, Leopoldino Capelozza Filho, and Mauricio Cardoso
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Ortodontia corretiva ,Modelos dentários ,Braquetes ortodônticos ,Dentistry ,RK1-715 - Abstract
OBJECTIVE: The present study aimed at analyzing, with the use of dental casts, the transverse changes of the upper and lower dental arches, after non-extraction orthodontic treatment, with self-ligating brackets. METHODS: The sample comprised 29 patients, all presenting Class I malocclusion with upper and lower crowding of at least 4 mm and treated only with a fixed appliance, without stripping, extraction or distalization. The dental casts were obtained before and after leveling with 0.019 x 0.025-in stainless steel archwires. CONCLUSION: The results indicated that the majority of transverse changes occurred at the premolar areas, both the first and the second, as well as on the upper and lower dental arches. The intercanine distance increased 0.75 mm, on average, in the upper arch and 1.96 mm in the lower arch. The molars also demonstrated a tendency towards an increase in their transverse dimension, however, at a lower intensity comparing to premolars. All measurements presented statistically significant differences with the exception of the maxillary second molars.
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- 2013
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19. Comparison of space analysis performed on plaster vs. digital dental casts applying Tanaka and Johnston's equation
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Júlia Olien Sanches, Lourdes Aparecida Martins dos Santos-Pinto, Ary dos Santos-Pinto, Betina Grehs, and Fabiano Jeremias
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Imagem Tridimensional ,Modelos dentários ,Reprodutibilidade dos testes ,Three-dimensional image ,Dental casts ,Test reproducibility ,Dentistry ,RK1-715 - Abstract
OBJECTIVE: The purpose of this study was to compare dental size measurements, their reproducibility and the application of Tanaka and Johnston regression equation in predicting the size of canines and premolars on plaster and digital dental casts. METHODS: Thirty plaster casts were scanned and digitized. Mesiodistal measurements of the teeth were then performed with a digital caliper on the plaster and digital casts using O3d software system (Widialabs©).The sum of the sizes of the lower incisors was used to obtain predictive values of the sizes of the premolars and canines using the regression equation, and these values were compared with the actual sizes of the teeth. The data were statistically analyzed by applying to the results Pearson's correlation test, Dahlberg's formula, paired t-test and analysis of variance (pOBJETIVO: comparar medidas de tamanhos dentários, suas reprodutibilidades e a aplicação da equação de regressão de Tanaka e Johnston na predição do tamanho dos caninos e pré-molares em modelos de gesso e digital. MÉTODOS: trinta modelos de gesso foram escaneados para obtenção dos modelos digitais. As medidas do comprimento mesiodistal dos dentes foram obtidas com paquímetro digital nos modelos de gesso e nos modelos digitais utilizando o software O3d (Widialabs). A somatória do tamanho dos incisivos inferiores foi utilizada para obter os valores de predição do tamanho dos pré-molares e caninos utilizando equação de regressão, e esses valores foram comparados ao tamanho real dos dentes. Os dados foram analisados estatisticamente, aplicando-se aos resultados o teste de correlação de Pearson, a fórmula de Dahlberg, o teste t pareado e a análise de variância (p < 0,05). RESULTADOS: excelente concordância intraexaminador foi observada nas medidas realizadas em ambos os modelos. O erro aleatório não esteve presente nas medidas obtidas com paquímetro, e o erro sistemático foi mais frequente no modelo digital. A previsão de espaço obtida pela aplicação da equação de regressão foi maior que a somatória dos pré-molares e caninos presentes nos modelos de gesso e nos modelos digitais. CONCLUSÃO: apesar da boa reprodutibilidade das medidas realizadas em ambos os modelos, a maioria das medidas dos modelos digitais foram superiores às do modelos de gesso. O espaço previsto foi superestimado em ambos os modelos e significativamente maior nos modelos digitais.
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- 2013
20. Reliability of a digital system for models measurements in BBO grading: A pilot study
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Paula Martins Bravo MIRANDA, Luciana Quintanilha Pires FERNANDES, Manuel Gustavo Chavez SEVILLANO, Felipe de Assis Ribeiro CARVALHO, and Jonas CAPELLI JUNIOR
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Dental models ,Modelos dentários ,Reproducibility of Results ,Oclusão dentária ,Pilot Projects ,Orthodontics ,Validação de programas de computador ,Oral Surgery ,Models, Dental ,Software ,Dental occlusion ,Ortodontia - Abstract
Introduction: Currently, no method is considered effective for the evaluation of digital models in the Certification Examination of the Brazilian Board of Orthodontics (BBO), considering the parameters of the currently used manual method. Objective: Thus, the aim of this study is to verify the reliability of an evaluation method for digital models that could be used in the BBO exam, compared to the gold standard. Methods: Measurements were performed by five previously calibrated examiners. Samples of ten sets of plaster models of the final phase of orthodontic treatment were measured using a manual method (Objective Grading System, OGS). These models were digitized using a 3D scanner and exported to Geomagic Qualify software, in which the measurements were made with the proposed digital method. These measurements were repeated using five models, after fifteen days. The intra-examiner performance with this method was analyzed with a paired t-test, whereas the inter-examiner analysis was carried out with analysis of variance and Tukey’s test. To compare the manual and digital methods, a paired t-test and Pearson’s correlation analysis were performed. Results: A statistically significant difference was found. The results showed that, when compared to the manual method, the digital method was effective in measuring the OGS in four of the seven variables studied: Marginal Ridge, Overjet, Occlusal Contact, and Interproximal Contact. The variables Alignment, BL inclination, and Occlusal Relationship showed a great amount of dispersion in the findings. Conclusion: Further studies are needed to develop an adequate digital methodology that can be used for all OGS variables. RESUMO Introdução: Ainda não há um método considerado eficaz para análise dos modelos digitais no exame do Board Brasileiro de Ortodontia (BBO), considerando-se os parâmetros do método manual atual. Objetivo: Assim, o presente estudo objetiva verificar a confiabilidade de um método de avaliação em modelos digitais para o exame do BBO, comparando com o padrão-ouro. Métodos: As medições foram realizadas por 5 examinadores, previamente calibrados. A amostra de 10 pares de modelos de gesso da fase final do tratamento ortodôntico foi medida no método manual (Sistema Objetivo de Avaliação, SOA). Os modelos foram digitalizados por meio de um scanner 3D e exportados para o software Geomagic Qualify, onde foram feitas as medidas no método digital proposto. As medidas foram refeitas em 5 modelos após 15 dias. A análise intraexaminador desse método foi realizada por meio do teste t pareado; já a interexaminadores, feita com ANOVA e teste de Tukey, sendo encontrada diferença estatisticamente significativa. Para a comparação dos métodos manual e digital, foram utilizados o teste t pareado e a correlação de Pearson. Resultados: Uma diferença estatisticamente significativa foi encontrada. Os resultados mostraram que, comparada ao método manual, a metodologia digital mostrou-se eficaz para medição do SOA em quatro das sete variáveis estudadas: Margem interproximal, Sobressaliência, Contato oclusal e Contato interproximal. As variáveis Alinhamento, Inclinação V-L e Relação oclusal mostraram muita dispersão nos achados. Conclusão: Mais estudos são necessários para o desenvolvimento de uma metodologia digital adequada em todas as variáveis do SOA.
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- 2022
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21. Stability evaluation of occlusal changes obtained with Fränkel's Function Regulator-2
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Tânia Gnecchi Tanaka, Fernanda Angelieri, Lylian Kazumi Kanashiro, and Silvana Bommarito
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Má oclusão de Angle Classe II ,Aparelhos ortopédicos ,Modelos dentários ,Angle Class II malocclusion ,Orthodontic appliances ,Dental models ,Dentistry ,RK1-715 - Abstract
OBJECTIVE: To analyze the stability of occlusal changes promoted by the Frankel's Functional Regulator 2 (FR-2), in a mean period of 7.16 years post treatment. METHODS: Fifty-four pairs of models were evaluated, from 18 patients treated with FR-2. All patients had Class II, division 1 malocclusion, with initial mean age of 10.77 years and were treated with FR-2 for 18 months. The models were evaluated at the beginning of treatment (T1), at the end (T2) and after 7.16 years post treatment (T3). For occlusal evaluation, the treatment priority index (TPI) was applied on the three analyzed phases. The alterations that occurred between phases were verified with one another through paired Student's t test, with critical value of 0.05. RESULTS: A statistically significant reduction of TPI was verified, from the initial to the final phase of the treatment, reflecting the efficiency of treatment performed with FR-2, specially due to improvement in molar relation, overjet and overbite. Apart from this, the Class II correction remained stable over time. CONCLUSIONS: In this way, it is concluded that the FR-2 appliance showed to be efficient for the dental correction of Class II malocclusion, with stable occlusal results after 7.16 years post treatment.OBJETIVO: analisar a estabilidade das alterações oclusais promovidas pelo aparelho Regulador de Função Fränkel-2 (RF-2), num período médio de 7,16 anos pós-tratamento. MÉTODOS: foram avaliados 54 pares de modelos, provenientes de 18 pacientes tratados por meio do aparelho RF-2. Todos os pacientes possuíam má oclusão de Classe II, divisão 1, com idade inicial média de 10,77 anos e foram tratados com o RF-2 por 18 meses. Os modelos foram avaliados no início do tratamento (T1), no final do tratamento (T2) e decorridos 7,16 anos pós-tratamento ativo (T3). Para a avaliação oclusal, aplicou-se o Índice de Prioridade de Tratamento (IPT) nas três fases analisadas. As alterações ocorridas entre as fases foram verificadas entre si por meio do teste t de Student pareado, com o valor crítico adotado de 0,05. RESULTADOS: verificou-se uma diminuição estatisticamente significativa do IPT, da fase inicial à final de tratamento, refletindo a eficácia do tratamento realizado por meio do RF-2, principalmente devido à melhora da relação molar, do trespasse horizontal e vertical. Além disso, a correção da má oclusão de Classe II obtida permaneceu estável no decorrer do tempo. CONCLUSÃO: concluiu-se que o aparelho RF-2 demonstrou ser eficaz na correção dentária da má oclusão de Classe II, com resultados oclusais estáveis decorridos 7,16 anos pós-tratamento.
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- 2012
22. Maxillary constriction: are there differences between anterior and posterior regions? Atresia maxilar: há diferenças entre as regiões anterior e posterior?
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Regina Helena Lourenço Belluzzo, Kurt Faltin Junior, Cícero Ermínio Lascala, and Lucas Bacci Renno Vianna
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Maxila ,Modelos dentários ,Resultado de tratamento ,Maxilla ,Dental casts ,Treatment results ,Dentistry ,RK1-715 - Abstract
OBJECTIVE: To evaluate the transverse constriction of the maxilla in both anterior and posterior regions, using Korkhaus analysis and to check whether there were any statistically significant differences within its values. METHOD: The sample comprised 341 study models. The study models were randomly selected from previous cases, without gender, age and malocclusion restrictions. The models were submitted to Korkhaus analysis. Data from these models were subjected to statistical analyzes in order to evaluate differences in anterior and posterior regions. RESULTS: The transverse discrepancies were statistically significant (pOBJETIVO: avaliar a atresia transversa da maxila em duas regiões anatômicas, anterior e posterior, através da análise de Korkhaus, e verificar se há diferença estatisticamente significativa em seus valores. MÉTODOS: a amostra foi constituída de 341 modelos de estudo iniciais, escolhidos aleatoriamente, sem restrições em relação ao sexo, à idade e à má oclusão. Os modelos foram submetidos à análise transversa de Korkhaus e os valores obtidos analisados estatisticamente, para avaliar se as atresias encontradas eram diferentes nas regiões anterior e posterior. RESULTADOS: as discrepâncias transversas são, em média, -2,84mm mais atrésicas na região anterior, sendo essa diferença estatisticamente significativa. CONCLUSÃO: os resultados mostraram que o diagnóstico diferencial é muito importante e devemos adequá-lo aos nossos planos de tratamento e, consequentemente, a uma terapia específica de expansão maior na região anterior.
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- 2012
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23. Mini-implant and Nance button for initial retraction of maxillary canines: a prospective study in cast models Mini-implante e botão de Nance para retração inicial de caninos superiores: estudo prospectivo em modelos
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Flávia de Moraes Arantes, Juliana Kina, Matheus José Bueno Gonçalves, Júlio de Araújo Gurgel, Omar Gabriel da Silva Filho, and Eduardo César Almada Santos
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Procedimentos de ancoragem ortodôntica ,Modelos dentários ,Ortodontia ,Orthodontic anchorage procedures ,Dental casting technique ,Orthodontics ,Dentistry ,RK1-715 - Abstract
OBJECTIVE: Bone anchorage is a key factor for the successful management of some malocclusions for it allows the application of continuous forces, decreases treatment time and is independent from patient compliance. METHODS: The goal of this work was to establish a dental model comparison in order to measure the anchorage loss after the initial retraction of upper canines between the two groups. Group A used mini-implants and Group B used Nance button. All patients had two models cast (M1 and M2). The first models were taken on baseline (M1) and the other models were taken after canine retraction (M2). RESULTS: All measurements were pooled and submitted to statistical analysis. In order to verify the inter-examiner systematic error a paired t-test was performed. Dahlberg's formula was used to estimate the casual error. For comparison purposes between Before and After stages, a paired t-test was done. For the comparison between mini-implant and Nance button groups, a Student t-test was applied. All tests adopted a 5% (pOBJETIVO: a ancoragem óssea é fundamental para o sucesso do tratamento de algumas más oclusões, pois permite a aplicação de forças contínuas, diminui o tempo de tratamento e independe da colaboração do paciente. MÉTODOS: o propósito desse trabalho foi comparar, por meio de modelos dentários, a perda de ancoragem após a retração inicial de caninos superiores entre dois grupos. O grupo A utilizou o mini-implante enquanto o grupo B utilizou o Botão de Nance. Para todos os pacientes foram realizados dois modelos (M1 e M2). Os primeiros modelos foram realizados ao início (M1), e os outros ao final da retração inicial de canino (M2). RESULTADOS: todas as medidas foram tabuladas e submetidas à análise estatística. Para verificar o erro sistemático intraexaminador foi utilizado o teste t pareado. Na determinação do erro casual utilizou-se o cálculo de erro proposto por Dahlberg. Para comparação entre as fases Início e Após, foi utilizado o teste t pareado. Para a comparação entre os grupos de mini-implante e Botão de Nance, foi utilizado o teste t de Student para medidas independentes. Em todos os testes foi adotado nível de significância de 5% (p
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- 2012
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24. Molars extraction for bone graft study in rabbits Extração de molares para estudos de enxertos ósseos em coelhos
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José Eduardo Ferreira Manso, Carlos Fernando de Almeida Barros Mourão, Flávio Alexandre Lima Pinheiro, Manoel Luiz Ferreira, Paulo César Silva, and Alberto Schanaider
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Experimentação Animal ,Modelos Dentários ,Coelhos ,Animal Experimentation ,Dental Models ,Rabbits ,Surgery ,RD1-811 - Abstract
PURPOSE: The aim of this study was to describe an experimental surgical technique to be used in the evaluation of bone grafts in rabbits. METHODS: The operative technique was performed in jaws, with external approach from the labial commissure to the last molar tooth. An incision about 1cm extended forward to the alveolar ridge, followed by a exposing the cervical region of the alveolar bone and dental elements was done. Thus, after extraction of first molar with forceps, the tooth socket left was filled with hydroxyapatite. The bone gain was analyzed by histopathological studies. RESULTS: The histological analyses indicated formed bone surrounding the biomaterial. CONCLUSION: The experimental model using the tooth socket of the rabbit molar is a feasible procedure for studies of bone grafts.OBJETIVO: Descrever uma técnica cirúrgica em coelhos para avaliação de enxertos ósseos. MÉTODOS: A técnica operatória consiste numa incisão na topografia da comissura labial até o ultimo molar. Uma incisão de 1cm no rebordo para expor o osso alveolar e a região cervical dos molares. Realizou-se a exodontia com fórceps e o alvéolo é preenchido com hidroxiapatita. Após o tempo de cicatrização é realizada a avaliação histológica. RESULTADOS: A análise histológica mostrou o novo osso formado rodeando biomaterial. CONCLUSÃO: O modelo cirúrgico para avaliação de enxertos ósseos utilizando molares de coelhos se mostrou factível.
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- 2011
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25. Accuracy of printed models obtained from intraoral scanning
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Pedro Tortamano Neto, Washington Steagall Junior, and Fernando Igai
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Physics ,Dental models ,Three-dimensional printing ,Impressão tridimensional ,Modelos dentários ,Three dimensional printing ,Dimensional accuracy ,General Earth and Planetary Sciences ,Humanities ,Precisão da medição dimensional ,General Environmental Science - Abstract
Objetivos: Comparar a acurácia de dois métodos de fabricação de modelos físicos: I) escaneamento intra-oral e modelos impressos em resina; e II) moldagem de silicone de adição e modelo de gesso. Materiais e métodos: Utilizou-se um manequim odontológico como modelo mestre, o qual foi comparado a cinco modelos de gesso (g1) e cinco modelos impressos em resina (g2) por meio de análises de medições lineares em quatro sítios de medição (M1, M2, M3 e M4) com um instrumento de medição por imagem. Os valores médios dos modelos experimentais foram comparados aos do modelo mestre utilizando-se o Teste-t. Para um mesmo local, as amostras de cada grupo foram comparadas por meio do Teste-t para amostras independente. Para todos os testes, foi adotado o nível de significância de 5% (0,05). Resultados: Os intervalos de confiança dos sítios M1, M2, e M4 para os modelos de gesso e resina apresentaram distância linear estatisticamente menor quando comparados aos valores do modelo de referência. Em M3, o valor médio dos modelos de gesso não foi estatisticamente diferente do valor médio da referência (p > 0,05); entretanto, os modelos impressos em resina apresentaram valor médio estatisticamente diferente (p 0.05); however, resin-printed models presented a statistically different mean value (p
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- 2021
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26. AVALIAÇÃO DO PLANEJAMENTO EM MODELOS PARA PRÓTESES PARCIAIS REMOVÍVEIS RECEBIDOS POR LABORAT ÓRIOS DE TERESINA, PIAUÍ.
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de Alencar, Gabriel Xavier, da Silva Pedrosa, Marlus, and Santos Lopes, Lívia Duarte
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Introduction: the Removable Partial Denture (RPD) is often neglected by professionals regarding their clinical and laboratory preparation and the transference of the responsibility from the dentist to the dental technician. Objective: this study aimed to assess the quality of planning and preparation in removable partial denture casts performed by dental students and dentists sent to the dental laboratories. Methods: the survey was conducted in eight registered dental laboratories in the Regional Council of Dentistry of Piaui (CRO-PI), where the forms was applied, with 10 closed questions. The sample consisted of 60 models for making RPD, 30 referred by dentists and 30 students. Results: the results showed that 21 (35%) dentists used plaster stone for casting and 21 (35%) students were leaked with special plaster; 27 (45%) of the dental students performed preparation in the dental models, and 24 (40%) dentists not prepared models; 2 (3.3%) of the dental technicians received technical designs of dentists and 26 (43.3%) of students; 20 (33.3%) students models arrived designed and 29 (48.3%) of dentists were done by technicians; 26 (43.3%) technicians had no doubt on the planning submitted by students and 15 (25%) had technical issues on the work referred by dentists and 100% communicated for clarification. Conclusion: in conclusion, a considerable number of dentists neglect the steps of mouth preparations and planning of RPDs, delegating to the dental technician the major responsibility in designing and executing removable partial denture. [ABSTRACT FROM AUTHOR]
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- 2016
27. Confiabilidade de medidas realizadas em modelos virtuais obtidos a partir do escaneamento de moldagens e de modelos de gesso convencionais
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Moreira, Debora Duarte, 1986, Ambrosano, Gláucia Maria Bovi, 1960, Pereira Neto, João Sarmento, Moraes, Mari Eli Leonelli de, Universidade Estadual de Campinas. Faculdade de Odontologia de Piracicaba, Programa de Pós-Graduação em Radiologia Odontológica, and UNIVERSIDADE ESTADUAL DE CAMPINAS
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Dental models ,Medição ,Modelos dentários ,Orthodontics ,Measures ,Ortodontia - Abstract
Orientador: Gláucia Maria Bovi Ambrosano Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba Resumo: O objetivo deste estudo foi comparar as medidas obtidas em modelos virtuais das moldagens e em modelos virtuais dos modelos de gesso com as obtidas em modelos de gesso. Os modelos virtuais foram obtidos pelo escaneamento da moldagem e do modelo de gesso em um scanner de superfície a laser (R700; 3Shape, Copenhage, Dinamarca) e as medidas foram realizadas com o software OrthoAnalyser (3Shape, Copenhage, Dinamarca). Os modelos de gesso convencionais foram mensurados com a utilização de um paquímetro digital. A amostra foi constituída de 26 pacientes selecionados aleatoriamente que foram submetidos a uma moldagem das arcadas superior e inferior com alginato e um registro de mordida com cera utilidade. As mensurações nos modelos de gesso, virtual da moldagem e virtual do modelo foram realizadas por três avaliadores devidamente treinados. Os dados foram tabulados e submetidos à análise estatística de correlação intraclasse para verificar a concordância das medidas intraavaliador e interavaliador e ao teste ANOVA para analisar diferenças nas medidas obtidas dos modelos virtuais da moldagem e do modelo. Os resultados mostraram existir diferença estatística significante (p?0,05) de 0,09 mm a 0,43 mm para dentes da região posterior e da região anterior e de 0,51 mm a 1,13 mm para perímetro do arco superior e distância intercaninos inferior, se comparados os modelos virtuais com os modelos de gesso; porém essas diferenças foram consideradas clinicamente aceitáveis. Foi possível concluir que os modelos digitais são uma alternativa confiável aos modelos de gesso Abstract: The aim of this study was to compare measurements of digital models obtained from plaster models scans, alginate impression scans to those obtained from conventional plaster models. The plaster models and alginate impressions were scanned using a optical surface scanner (R700; 3Shape, Copenhage, Dinamarca) and the measurements were performed using proprietary software OrthoAnalyser (3Shape, Copenhagen, Denmark). The plaster models ware measured by using a caliper. The sample was comprised of 26 pacients randomly selected to have impressions of their upper and lower jaws taken using alginate and their bite registration using a wax bite. The measurements on the plaster model, digital impression and digital model were performed by three observers calibrated. The data was analyzed statistically by the intraclass correlation to assess the agreement of the measurements for the intra and inter-observers. ANOVA test was used to analyze the differences between the three different objects (plaster model, digital model from plaster and digital model from impression). The results showed there is a statistically significant difference (p?0,05) 0,09 mm to 0,43 mm to the posterior teeth and the anterior region, and 0,51 mm to 1,13 mm to upper arch length and lower inter-canine distance if compared digital models with plaster models, but these differences were found to be clinically acceptable. We concluded that the measurements taken from digital models can be a reliable alternative to conventional plaster models for orthodontic diagnosis purposes Mestrado Radiologia Odontológica Mestra em Radiologia Odontológica
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- 2021
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28. Validity and reliability of a trigonometry-based method for the measurement of tooth movement on digital models
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Luciana Duarte Caldas, Taiana de Oliveira Baldo, Victor Miranda Fernandes, Gladys Cristina Dominguez, Bruno Fernandes de Oliveira Santos, and Renata de Faria Santos
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Molar ,030213 general clinical medicine ,Cuspid ,Rotation ,Intraclass correlation ,Modelos dentários ,Validity ,Orthodontics ,03 medical and health sciences ,0302 clinical medicine ,Interface usuário-computador ,stomatognathic system ,Humans ,Bicuspid ,Tooth movement techniques ,Anterior teeth ,Reliability (statistics) ,Mathematics ,Técnicas de movimentação dentária ,Dental models ,Reproducibility of Results ,RK1-715 ,030206 dentistry ,User-computer interface ,Rotação ,Incisor ,stomatognathic diseases ,Dentistry ,Posterior teeth ,Original Article ,Odontometers ,Oral Surgery ,Trigonometry ,Rotation (mathematics) - Abstract
Objective: The objectives of the present study were to develop a method for longitudinally measuring tooth rotation, inclination and angulation on digital models, and to test the method validity and reliability. Methods: The initial and final planned models of 14 patients treated with Invisalign® (386 teeth) were exported from ClinCheck®. The rotation, inclination and angulation values were assessed for the incisors, canines, premolars and molars, in both models, using trigonometry. An application was developed in Python 2.7 to automate the measurements. The ∆planned (variation in the position between the initial and final planned models) was obtained for each tooth and each type of movement. To test the validity, the degree of agreement between the ∆planned and the values available in the Invisalign® Table of Movements was assessed using the Intraclass Correlation Coefficient (ICC) and Bland-Altman analysis. For intra and inter-rater reliabilities, the ∆planned was obtained again. Results: Excellent ICCs (> 0.9) and limits of agreement with narrow and clinically acceptable discrepancies were obtained for the rotation of all teeth (except maxillary canines, which had broader limits: -3.47 - 5.43) and for the inclination of premolars and molars. The inclination of anterior teeth and angulation of all teeth had ICCs and limits that were not indicative of great agreement. The reliability was high for the three movements (discrepancy 0,9) e limites de concordância com discrepâncias reduzidas e clinicamente aceitáveis foram obtidos para a rotação de todos os dentes (exceto os caninos superiores, que expressaram limites mais amplos: -3,47 - 5,43) e para a inclinação de pré-molares e molares. A inclinação dos dentes anteriores e a angulação de todos os dentes apresentaram ICCs e limites não representativos de boa concordância. A reprodutibilidade foi alta para os três movimentos (discrepância < 2°). Conclusões: O método desenvolvido é reprodutível e se mostrou adequado para mensuração longitudinal da inclinação de dentes posteriores e rotação de todos os dentes, exceto caninos superiores. Apresenta valor limitado para as demais mensurações.
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- 2021
29. Confiabilidade da avaliação da discrepância de Bolton em modelos virtuais tridimensionais.
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Brandão, Marianna Mendonca, Costal Sobral, Marcio, and Vogel, Carlos Jorge
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Copyright of Dental Press Journal of Orthodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2015
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30. Escaneamento intraoral no planejamento e confecção de próteses dentárias / Intraoral scanning in the planning and making of dental prostheses
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Ítalo Nascimento Ferreira, Keyla Karoline Melo Pereira, Max Dória Costa, Marília Lima Dantas, Heloísa do Nascimento Carvalho, and Antônio Alves De Almeida Júnior
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Planejamento de prótese dentária ,business.industry ,Modelos dentários ,Desenho de prótese ,Medicine ,Dentistry ,General Medicine ,business - Abstract
1 INTRODUÇÃOA Odontologia teve um grande avanço em relação às novas tecnologias voltadas a fabricação de próteses dentárias, exigindo que o padrão de precisão e agilidade na execução sejam superiores às técnicas convencionais. 2 OBJETIVOSEste trabalho aborda uma revisão de literatura atualizada acerca do uso do scanner intraoral associado as vantagens do mesmo na confecção de próteses dentárias.Metodologia: Foi realizada uma revisão bibliográfica com base em sites como SciELO e PubMed em busca de artigos entre os anos de 2012 a 2018, com as palavras chaves escaneamento intraoral, CAD\CAM e próteses dentárias. 3 DISCUSSÃOO escanner digital surge nesse contexto com a finalidade de digitalizar objetos reais a partir de uma imagem gerada por luz ou por contato, que é responsável pela transformação da geometria do preparo ou dente em versão digital, gerada por um Software de planejamento que importa as imagens obtidas para um computador. A digitalização de modelos de gesso e o escaneamento intraoral proporciona uma agilização no trabalho odontológico, melhor visualização dos detalhes anatômicos e comunicação com o laboratório, bem como torna o modelo de gesso um documento digital. Com isso, surge os sistemas Computer-Aided Design e Computer-Aided Manufactoring (CAD/CAM), que trazem como propriedades principais a agilidade, precisão e praticidade na confecção de próteses dentárias. O Cirurgião Dentista pode obter o modelo digital através da impressão óptica, ao usar o CAD intraoral, visando a digitalização do preparo dental diretamente na boca do paciente, sem a necessidade da moldagem prévia e os dados coletados são enviados para o Software. Ademais, muitos scanners trabalham com uma imagem digital em 3D da superfície dos dentes, contornos e gengiva, capturando dados essenciais para a confecção de próteses parciais fixas, coroas, onlays e inlays. Em casos de coroa protética o programa instalado propicia delimitar o termino cervical, realizar troquelamento e expõe a área trabalhada, onde o desenho da coroa é disponibilizado na base de dados do programa, que ainda oferece opções de personalizar a coroa, o que possibilita uma melhor previsibilidade do trabalho e maior chances de ter um sucesso clinico. 4 CONCLUSÃODesta forma, o uso do escaneamento intraoral mostra-se ser de grande ajuda na Odontologia atual, ao proporcionar uma melhor precisão, agilidade e confiabilidade no planejamento de próteses dentárias, principalmente quando associado ao sistema CAD/CAM.
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- 2020
31. Reliability and accuracy of automatic segmentation of mandibular 3D models on linear measurements
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Marcelo Lupion Poleti, Marcela Rodrigues Moretti, Thais Maria Freire Fernandes, Izabel Regina Fischer Rubira-Bullen, Lucas Ramos Puzinato, and Thiago Vinícius Sehn Slaviero
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Cone beam computed tomography ,Observer (quantum physics) ,business.industry ,Intraclass correlation ,Computer science ,Reproducibility of Results ,Pattern recognition ,030206 dentistry ,Mandible ,Cone-Beam Computed Tomography ,Surgical planning ,Regression ,MODELOS DENTÁRIOS ,03 medical and health sciences ,0302 clinical medicine ,Software ,Imaging, Three-Dimensional ,030220 oncology & carcinogenesis ,Artificial intelligence ,Imaging science ,business ,General Dentistry ,Reliability (statistics) - Abstract
Evaluate if automatic segmentation of mandibular three-dimensional (3D) models is reliable and accurate. Eight dry mandibles with eight silica markers were scanned in the i-CAT Classic device (Imaging Sciences International). Automatic segmentation was performed using nine standard preset thresholds in the Dolphin software (Dolphin Imaging & Management Solutions). Three observers individually made twice eight linear measurements on the mandibular 3D models. Another observer made physical measurements, twice as well, on the dry mandibles. Reliability and accuracy were evaluated with intraclass correlation coefficients (ICCs), Dahlberg’s formula, Bland-Altman analyses, and changing bias with regression analyses. Inter-observer and intra-observer ICCs and Dahlberg’s error were ≥ 0.75 and ≤ 1.0 mm, respectively, for all measurements. Inter-observer agreement between mandibular 3D models and physical measurements ranged from −0.37 to 0.91 mm. Linear measurements made on mandibular 3D models obtained using standard preset thresholds are reliable and accurate. However, additional studies are necessary to confirm this hypothesis for clinical applications. Since the 3D models are useful for diagnostics and surgical planning, it is necessary to determinate whether the linear measurements made on 3D models obtained by automatic segmentation are sufficiently reliable and accurate.
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- 2020
32. The use of CAD / CAM technology in planning and orthodontic treatment of patients with Class I malocclusionn
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Moreira, Fernando César, Universidade Estadual Paulista (Unesp), Vaz, Luis Geraldo [UNESP], and Jacob, Helder Baldi
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Orthodontics Corrective ,Orthodontic Appliances, Fixed ,Technology, Dental ,Ortodontia Corretiva ,Computer-Aided Design ,Modelos Dentários ,Projeto Auxiliado por Computador ,Dental Models ,Aparelhos Ortodônticos Fixos ,Tecnologia Odontológica - Abstract
Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-30T12:02:57Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057568 bytes, checksum: fc130c509e0a40eaab7c9a5bb9d68dc5 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-30T12:02:57Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057568 bytes, checksum: fc130c509e0a40eaab7c9a5bb9d68dc5 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-30T12:02:57Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057568 bytes, checksum: fc130c509e0a40eaab7c9a5bb9d68dc5 (MD5) Rejected by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br), reason: Antes de submeter faça as seguintes correções: Nos agradecimentos de sua tese você agradeceu somente a CAPES e no preenchimento do metadados você colocou como agencia de fomento o CNPq. Se você recebeu financiamento do CNPq tem que constar nos agradecimentos também. on 2020-03-31T02:17:19Z (GMT) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-30T12:02:57Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057568 bytes, checksum: fc130c509e0a40eaab7c9a5bb9d68dc5 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-30T12:02:57Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057568 bytes, checksum: fc130c509e0a40eaab7c9a5bb9d68dc5 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Rejected by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br), reason: Antes de submeter faça as seguintes correções: Nos agradecimentos de sua tese você agradeceu somente a CAPES e no preenchimento do metadados você colocou como agencia de fomento o CNPq. Se você recebeu financiamento do CNPq tem que constar nos agradecimentos também. on 2020-03-31T02:17:19Z (GMT) Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-30T12:02:57Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057568 bytes, checksum: fc130c509e0a40eaab7c9a5bb9d68dc5 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-30T12:02:57Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057568 bytes, checksum: fc130c509e0a40eaab7c9a5bb9d68dc5 (MD5) Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Rejected by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br), reason: Antes de submeter faça as seguintes correções: Nos agradecimentos de sua tese você agradeceu somente a CAPES e no preenchimento do metadados você colocou como agencia de fomento o CNPq. Se você recebeu financiamento do CNPq tem que constar nos agradecimentos também. on 2020-03-31T02:17:19Z (GMT) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Rejected by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br), reason: Antes de submeter faça as seguintes correções: Nos agradecimentos de sua tese você agradeceu somente a CAPES e no preenchimento do metadados você colocou como agencia de fomento o CNPq. Se você recebeu financiamento do CNPq tem que constar nos agradecimentos também. on 2020-03-31T02:17:19Z (GMT) Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-30T12:02:57Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057568 bytes, checksum: fc130c509e0a40eaab7c9a5bb9d68dc5 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Rejected by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br), reason: Antes de submeter faça as seguintes correções: Nos agradecimentos de sua tese você agradeceu somente a CAPES e no preenchimento do metadados você colocou como agencia de fomento o CNPq. Se você recebeu financiamento do CNPq tem que constar nos agradecimentos também. on 2020-03-31T02:17:19Z (GMT) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Submitted by Fernando Cesar Moreira (fernando.c.moreira@unesp.br) on 2020-03-31T03:27:13Z No. of bitstreams: 1 Tese_doutorado_FCM.pdf: 6057708 bytes, checksum: a3d640057feebaed0b5528507abf0fbe (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Approved for entry into archive by Marley Cristina Chiusoli Montagnoli (marley@foar.unesp.br) on 2020-03-31T22:34:45Z (GMT) No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Made available in DSpace on 2020-03-31T22:34:46Z (GMT). No. of bitstreams: 1 moreira_fc_dr_arafor.par.pdf: 294802 bytes, checksum: 581fc4a607e875d07730f7608db714d3 (MD5) Previous issue date: 2020-03-17 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Os sistemas CAD/CAM têm auxiliado ortodontistas no planejamento e posicionamento de braquetes com o objetivo de minimizar os erros e melhorar a qualidade do tratamento. Este estudo teve como objetivo validar as mensurações realizadas no software do sistema eXceed™, avaliar a previsibilidade e as alterações dento-alveolares. A amostra foi composta por 24 adultos jovens, portadores de má-oclusão Classe I de Angle. Foram obtidas Tomografia Computadorizada de Feixe Cônico (TCFC) antes e após o tratamento para avaliar as alterações dento-alveolares. Modelos de gesso foram obtidos por moldagens das arcadas com alginato e posteriormente digitalizados por meio de um escâner de mesa 3Shape R700 (3Shape Dental System™, Copenhague, Dinamarca). Os modelos 3D foram convertidos em estereolitografia (.stl) pelo OrthoAnalyser™ e exportados para a plataforma eXceed™ para o planejamento e criação do setup virtual. Dispositivos de colagem indireta foram fabricados a partir dos modelos 3D com as informações da posição idealizada dos braquetes sobre o modelo virtual. Os pacientes foram submetidos ao tratamento ortodôntico com aparelho fixo e braquetes autoligados. Os modelos 3D dos setups digitais iniciais foram comparados com os modelos digitais dos casos tratados (após o completo alinhamento e nivelamento das arcadas com o fio de aço .019”x.025”). As mensurações lineares realizadas em ambos os grupos pelo software Geomagic® foram avaliadas empregando-se o sistema de classificação do American Board of Orthodontics (ABO). O teste t de Student foi aplicado nas réplicas para avaliação do erro sistemático. O Coeficiente de Correlação Intraclasse (ICC) e o erro do método para os erros aleatórios. Análise estatística descritiva e o teste do Qui-quadrado avaliaram se as medidas do índice do ABO de cada critério estavam dentro dos limites de concordância. Os índices do ABO em ambos os grupos foram comparados pelo teste de Wilcoxon. A análise de Bland-Altman mostrou que as diferenças de repetitividade entre os dois métodos estavam dentro dos limites de concordância. Um caso clinico foi estudado utilizando o fluxo de trabalho do eXceed™ para verificar a eficácia do sistema. O grupo dos casos tratados obtiveram índices do ABO com maiores deduções do que os do Virtual Setup, porém sem significância clínica. O setup criado pelo CAM/CAM foi capaz de prever o alinhamento e o nivelamento final dos dentes. A maioria das medidas intra-arco foram semelhantes e os critérios Overjet e Contatos Oclusais (interarco) foram os mais discrepantes. A sobreposição dos modelos 3D preditivos com os digitais dos casos finais, gerou um mapa de cores que demonstrou o desvio das arcadas superior e inferior, com variação mínima e máxima de 0,34 mm e 0,31 mm, respectivamente. Houve uma melhora no paralelismo entre as raízes após a finalização do tratamento. Embora não exista grupo controle, verificou-se uma discreta reabsorção radicular em cerca de 44% das raízes dentárias (
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- 2020
33. Validade e confiabilidade na sobreposição digital de modelos ortodônticos maxilares com software de livre acesso [recurso eletrônico]/Murilo Augusto Anacleto ; orientador: Bernardo Quiroga Souki
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Anacleto, Murilo Augusto, Souki, Bernardo Quiroga Orientador, and Pontifícia Universidade Católica de Minas Gerais.Programa de Pós-Graduação em Odontologia Instituição
- Subjects
Processamento de imagem assistida por computador ,Software livre ,Modelos dentários ,Movimentação dentária ,Reprodutibilidade dos testes ,616.314-089.23 ,Imagem tridimensional - Abstract
Dissertação (Mestrado) - Pontifícia Universidade Católica de Minas Gerais, Programa de Pós-Graduação em Odontologia Bibliografia: f. 65-66 O objetivo no presente estudo foi avaliar a validade e a confiabilidade de dois métodos de sobreposição (sobreposição usando pontos de referência e sobreposição usando regiões de interesse) de modelos digitais do arco dentário maxilar com software de livre acesso 3D Slicer. Modelos digitais tridimensionais (3D) do arco dentário maxilar de 16 crianças que não se submeteram a tratamento ortodôntico foram reorientados no espaço de forma padronizada, criando assim, 16 modelos clonados dos modelos originais com as mesmas características anatômicas, porém com diferente orientação espacial. Os modelos foram sobrepostos de forma automática pelo software, utilizando nove pontos de referência: os pontos mediais da segunda e terceira rugas de ambos os lados, o ponto médio entre os pontos laterais e mediais da terceira ruga, também em ambos os lados, e três pontos específicos na rafe palatina mediana: a) ponto na rafe palatina localizado 3 mm posterior ao ponto médio da terceira ruga mais posterior; b) 5 mm posterior a este último ponto na rafe palatina, e c) 5 mm posterior a este último ponto na rafe palatina. A validade dos dois métodos foi testada quantificando as diferenças observadas entres os modelos sobrepostos e os dois métodos foram comparados através do teste t de Student para amostras pareadas. A confiabilidade do método foi aferida avaliando-se o erro intraobservador através das repetições das sobreposições. A concordância intraobservador foi determinada pelo teste t de Student para amostras pareadas, onde os valores de P indicaram se havia significado estatístico entre as medidas realizadas pelo mesmo examinador. O Color Map dos modelos sobrepostos indicou uma grande diferença entre os modelos quando do uso de pontos de referencia para a superposição, invalidando este método. Todavia, a sobreposição usando as regiões de interesse apresentaram mínimas diferenças entre os modelos, com excelente concordância intraexaminador para as medidas avaliadas, sugerindo que este método de sobreposição é adequado. A sobreposição de modelos 3D digitais da arcada superior com software de livre acesso 3D Slicer mostrou-se válida e confiável quando o método de registro utilizou regiões de interesse. Palavras-chave: Sobreposição. Modelos digitais. Imagem tridimensional. Reprodutibilidade dos testes The aim of the present study was to evaluate the validity and reliability of two superimposition methods (superimposition using landmarks and superimposition using regions of interest) of digital maxillary models with open-access 3D Slicer software. Three-dimensional (3D) digital models of the maxillary dental arch of 16 children who did not undergo orthodontic treatment were reoriented in space in a standardized manner, thus creating 16 cloned models of the original models with the same anatomical characteristics, but with different spatial orientation. The models were automatically superimposed by the software using nine landmarks: the medial points of the second and third palatine rugae on both sides, midpoint between the lateral and medial points of the third ruga, also on both sides, and three. Specific points on the midpalatal raphe: a) Point on the palatal raphe located 3 mm posterior to the midpoint of the third most posterior ruga; b) 5 mm posterior to this last point in the palatal raphe, and c) 5 mm posterior to this last point in the palatal raphe. The validity of both methods was tested by quantifying the differences observed between the superimposed models and the two methods were compared using the Student's t test for paired samples. The reliability of the method was assessed by assessing the intraobserver error through repetition of the superimpositions. Intraobserver agreement was determined by Student's t test for paired samples, where P values indicated whether there was statistical significance between the measurements performed by the same examiner. The Color Map of the superimpositions models indicated a great difference between the models when using reference points for the superposition, invalidating this method. However, the superimposition using the regions of interest showed minimal differences between the models, with excellent intra-examiner agreement for the measures evaluated, suggesting that this superimposition method is appropriate. Superimposition of maxillary digital models with open access 3D Slicer software proved to be valid and reliable when the registration method used regions of interest. Keywords: Superposition. Digital models. 3D imaging. Reproducibility of results
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- 2020
34. Comparison of linear and angular changes assessed in digital dental models and cone-beam computed tomography
- Author
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Daniela Gamba Garib, Erika Benavides, Lucia H. S. Cevidanes, Juan Fernando Aristizabal, Antonio Carlos de Oliveira Ruellas, Marilia Yatabe, Hector F. Rios, Camila Massaro, Maria Antonia Alvarez, Diego Rey, Carolina Losada, José Roberto Pereira Lauris, and Marcos Ioshida
- Subjects
Adult ,Cone beam computed tomography ,Wilcoxon signed-rank test ,Intraclass correlation ,medicine.medical_treatment ,Orthodontics ,3d model ,Anterior crowding ,Crown (dentistry) ,Article ,03 medical and health sciences ,MODELOS DENTÁRIOS ,0302 clinical medicine ,Imaging, Three-Dimensional ,stomatognathic system ,medicine ,Humans ,030212 general & internal medicine ,Mathematics ,Significant difference ,Dental Models ,Reproducibility of Results ,030206 dentistry ,Cone-Beam Computed Tomography ,equipment and supplies ,Models, Dental ,Otorhinolaryngology ,Surgery ,Oral Surgery ,Tooth ,Malocclusion - Abstract
OBJECTIVE: To compare the three-dimensional (3D) linear displacements and the mesiodistal and buccolingual angulation changes after orthodontic treatment in digital dental models (DDMs) and 3D models derived from cone-beam computed tomography (CBCT). SETTINGS AND SAMPLE POPULATION: Digital dental model and CBCT scans were selected from 24 adults who had undergone orthodontic treatment for mandibular anterior crowding. MATERIAL AND METHODS: 3D linear displacements and changes in angular measurements (mesiodistal and buccolingual angulation) were assessed in pre- and posttreatment DDM and CBCT images using the software ITK-snap and 3D SlicerCMF. Intra- and inter-rater agreement of measurements in DDM and CBCT were tested using the intraclass correlation coefficient (ICC). DDM and CBCT measurements were compared using the Wilcoxon test (P < .05), ICC and Bland-Altman plots. RESULTS: Intra- and inter-rater agreement varied from good (ICC > 0.75) to excellent (ICC > 0.90) for both DDM and CBCT measurements. Although no significant difference between DDM and CBCT methods was observed for linear measurements of tooth movement, the angular assessments were different for most measurements. The agreement between measurements from both assessments varied from poor to excellent. CONCLUSIONS: Longitudinal assessments of tooth movements including 3D linear displacements and mesiodistal and buccolingual angulation are reproducible when using both DDM and CBCT. Changes in angular measurements due to orthodontic treatment are discordant when measured in the digital models (clinical crown) and in the CBCT images (whole tooth).
- Published
- 2020
35. Escaneamento de modelos para a confecção de setup virtual.
- Author
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de Sousa Dardengo, Camila, Carneiro, Mariana Perfeito, and Mendes Miguel, José Augusto
- Abstract
Copyright of Revista Clínica de Ortodontia Dental Press is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2013
36. Comparison of space analysis performed on plaster vs. digital dental casts applying Tanaka and Johnston's equation.
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Sanches, Júlia Olien, Martins dos Santos-Pinto, Lourdes Aparecida, Santos-Pinto, Ary dos, Grehs, Betina, and Jeremias, Fabiano
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DENTAL casting ,DENTAL plaster casts ,CUSPIDS ,BICUSPIDS ,ORTHODONTICS - Abstract
Copyright of Dental Press Journal of Orthodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2013
- Full Text
- View/download PDF
37. Avaliação da estabilidade das alterações oclusais obtidas pelo Regulador de Função Fränkel-2.
- Author
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Tanaka, Tânia Gnecchi, Angelieri, Fernanda, Kanashiro, Lylian Kazumi, and Bommarito, Silvana
- Abstract
Copyright of Dental Press Journal of Orthodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2012
38. Análise da Confiabilidade de Métodos Utilizados na Medição do Espaço Presente.
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Guanaany de Oliveira TENÓRIO, Marília Martina, de OMENA, Brício Douglas, and Rodrigues da MATTA, Edgard Norões
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ORTHODONTICS ,DENTAL arch ,DENTURES ,STATISTICS ,DENTISTRY ,DENTISTS - Abstract
Copyright of Pesquisa Brasileira em Odontopediatria e Clinica Integrada is the property of Pesquisa Brasileira em Odontopediatria e Clinica Integrada Journal (Brazil) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2012
- Full Text
- View/download PDF
39. Responsabilidade legal sobre modelos de prótese parcial removível.
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FRANCESQUINI JÚNIOR, Luiz, RIZATTI-BARBOSA, Célia Marisa, PICAPEDRA, Alicia, FERNANDES, Mario Marques, BARBIERI, Ana Amélia, and Da SILVA, Rhonan Ferreira
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DENTURES ,PLASTER casts ,DENTAL laws & legislation ,DENTISTS ,CIVIL liability ,DENTAL implants ,REMOVABLE partial dentures - Abstract
Copyright of RGO: Revista Gaúcha de Odontologia is the property of RGO: Revista Gaucha de Odontologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2011
40. Avaliação do Planejamento de Prótese Parcial Removível em Modelos Recebidos por Laboratórios de João Pessoa, PB.
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Batista, André Ulisses Dantas, Sales, João Paulo Lima Araújo, Neto, Arcelino Farias, and Carreiro, Adriana Da Fonte Porto
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REMOVABLE partial dentures ,DENTAL plaster casts ,PROSTHODONTICS ,DENTURES ,ORTHODONTIC appliances - Abstract
Copyright of Pesquisa Brasileira em Odontopediatria e Clinica Integrada is the property of Pesquisa Brasileira em Odontopediatria e Clinica Integrada Journal (Brazil) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2011
- Full Text
- View/download PDF
41. Avaliação das alterações dentárias na maxila em pacientes submetidos à expansão rápida da maxila assistida cirurgicamente sem o envolvimento da sutura pterigomaxilar.
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Camara, Paulo Roberto Pelucio, Goldenberg, Fernanda C., Goldenberg, Dov C., Alonso, Nivaldo, and Scanavini, Marco A.
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DENTAL care ,HYRAXES ,OPERATIVE surgery ,OSTEOTOMY ,BICUSPIDS - Abstract
Copyright of Revista Dental Press de Ortodontia e Ortopedia Facial is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2009
- Full Text
- View/download PDF
42. Macro modelos de preparos em prótese fixa
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Duarte, Luiza Jardim Frossard
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Prótese parcial fixa ,Preparo do dente para prótese ,Retenção em prótese dentária ,Modelos dentários ,MEDICINA DENTÁRIA (ODONTOLOGIA) - Abstract
Objetivo: o objetivo deste trabalho é ilustrar de forma dinâmica e demonstrativa como deve ser o preparo realizado em dentes posteriores para coroa total e incrustação. Através da amplificação dos detalhes destes preparos e apresentação das particularidades técnicas, os alunos e profissionais terão uma melhor visualização quanto às características de angulação das paredes, término cervical, arredondamento dos ângulos internos, altura e largura do dente. Contribuindo assim para o processo ensino-aprendizagem de forma clara e objetiva. Material e Métodos: macro modelos dentários serão utilizados juntamente com a explicação oral dos autores do trabalho para apresentar as principais características de preparos dentários e como obtê-las na prática clínica. Resultados: o preparo dentário é uma etapa crítica para o sucesso restaurador do dente. Muitos profissionais desconhecem as características ideais de um preparo dentário, o que muitas vezes dificulta o trabalho do protético sobre esse troquel e por conseguinte o sucesso restaurador, como por exemplo a desadaptação ou a baixa retenção e estabilidade da coroa protética. Conclusão: desta forma acredita-se contribuir na formação profissional, facilitando a identificação das características dos preparos dentários e sua reprodução na clínica tanto por graduandos quanto para os profissionais cirurgiões-dentistas
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- 2019
43. Usability of software used for the visualization and analysis of digital orthodontic models
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Rocha, Matheus Felter, Silva, Rhonan Ferreira da, Lenza, Maurício Guilherme, and Costa, Nádia do Lago
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Dental models ,ODONTOLOGIA [CIENCIAS DA SAUDE] ,Interface usuário-computador ,Modelos dentários ,Orthodontics ,User-computer interface ,Ortodontia - Abstract
Os modelos digitais ortodônticos apresentam vantagens em relação aos modelos físicos de gesso. Entretanto, para que estes possam ser substituídos, é importante que os modelos digitais possibilitem todas as funcionalidades necessárias ao ortodontista, sejam confiáveis, acessíveis em custo e fáceis de manusear. O objetivo deste trabalho foi avaliar a usabilidade de softwares disponibilizados gratuitamente e que possibilitam a visualização e análise de modelos digitais ortodônticos. Foi solicitado a 80 alunos de cursos de pós- graduação em Ortodontia que realizassem tarefas pré-definidas em um modelo digital por meio dos softwares 3D Viewer ® e 3D-Tool ®. O sucesso na realização das tarefas e o tempo dispendido foram avaliados. Por fim, cada participante respondeu a um questionário para expressar sua satisfação em relação a aspectos específicos do uso de cada software. Sessenta e quatro (80%) participantes conseguiram manipular o modelo no 3D Viewer ®, enquanto que sessenta e nove (86%) o fizeram no 3D-Tool ®. Por outro lado, apenas 52,5% conseguiram encontrar a ferramenta de mensurações lineares no 3D Viewer ® e apenas 33,7% no 3D-Tool ®. O tempo dispendido para realizar as medições não apresentou diferenças significativas, girando em torno de dois minutos em cada software. Os dois softwares foram avaliados, em média, como “pouco bons” em diversos critérios relacionados à satisfação de uso pelos participantes que os experimentaram, havendo margem para otimização de suas interfaces pelos fabricantes e problemas a serem considerados pelo clínico que deseje trabalhar com um deles para a visualização e análise de modelos digitais ortodônticos. Orthodontic digital models have advantages over physical plaster models. However, for them to be replaced, it is important that digital models provide all the necessary functionality to the orthodontist, be reliable, accessible in cost and easy to handle. The objective of this work was to evaluate the usability of software provided free of charge and that allow visualization and analysis of digital orthodontic models. Eighty students from post-graduate courses in Orthodontics were asked to perform pre-defined tasks in a digital model through 3D Viewer ® and 3D-Tool ® software. The success in the accomplishment of the tasks and the time spent were evaluated. Finally, each participant answered a questionnaire to express their satisfaction regarding specific aspects of the use of each software. Sixty-four (80%) participants were able to manipulate the model in 3D Viewer ®, while sixty-nine (86%) did so in the 3D-Tool ®. On the other hand, only 52.5% were able to find the linear measurement tool in 3D Viewer ® and only 33.7% in the 3D-Tool ®. The time spent to perform the measurements did not present significant differences, being around two minutes in each software. The two software were evaluated, on average, as "not very good" in several criteria related to the satisfaction of use by the participants who experienced them, there being scope for optimization of their interfaces by the manufacturers and problems to be considered by the clinician who wishes to work with one of them for the visualization and analysis of orthodontic digital models. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
- Published
- 2019
44. Os modelos ortodônticos digitais são confiáveis? Uma revisão sistemática
- Author
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Marcela Baraúna Magno, Matheus Melo Pithon, Orlando Tanaka, Camila Silva de Amorim, Tarcila Matos, Ana Carolina Dias Viana de Andrade, Lucianne Cople-Maia, and Letícia Iandeyara Dantas Andrade Sant’Anna
- Subjects
lcsh:R5-920 ,Modelos dentários ,lcsh:Medicine (General) ,Imagem tridimensional ,Ortodontia - Abstract
Introdução: os modelos digitais são alternativas para o uso de modelos ortodônticos em gesso. Devido a sua importância no dignostico, faz-se necessário averiguar a precisão dos softwares modelos ortodônticos digitais disponiveis. Objetivo: evidenciar qual software de modelos ortodônticos digitais possui maior confiabilidade. Material e métodos: foi realizada busca sistemática nas seguintes bases de dados eletrônicas: Scopus, PubMed, Web of Science, Embase e Cochrane, Grey Literature e Clinical Trials, sem limitações quanto ao ano de publicação ou idioma. Foram incluídos estudos laboratoriais que utilizaram softwares destinados a geração de modelos ortodônticos digitais, comparando-os com modelos ortodônticos em gesso. Após seleção por título e resumo, os artigos potencialmente elegíveis foram lidos na íntegra. A qualidade metodológica e o risco de viés dos artigos incluídos foram avaliados de acordo com as descrições dos modelos, técnicas de medição e análises estatísticas. A qualidade metodológica foi classificada em alta, moderada ou baixa. Resultados: 13.333 artigos foram encontrados nas bases de dados utilizadas. Após a aplicação dos critérios de elegibilidade e remoção de duplicações, restaram apenas 41 artigos. 29 foram considerados de qualidade moderada e 12 de alta qualidade. A classificação quanto à confiabilidade variou de menos confiaveis, equivalentes e a mais confiaveis. Apresentando diferenças estatisticas em suas mensurações (p
- Published
- 2019
45. Analysis of Orthodontic Prescriptions in Molares with Ideal Torques - Laboratory Study
- Author
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Piva, Luana Caroline, Busato , Mauro Carlos Agner, Tondelli , Pedro Marcelo, and Mendonça , Marcio José
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Dental models ,ODONTOLOGIA [CIENCIAS DA SAUDE] ,Torque ,Modelos dentários ,Orthodontics ,Ortodontia - Abstract
Submitted by Edineia Teixeira (edineia.teixeira@unioeste.br) on 2019-02-15T19:01:56Z No. of bitstreams: 2 Luana_Piva_2018.pdf: 1657544 bytes, checksum: 7b1664bb8a7145180d1b0818ea573db8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Made available in DSpace on 2019-02-15T19:01:56Z (GMT). No. of bitstreams: 2 Luana_Piva_2018.pdf: 1657544 bytes, checksum: 7b1664bb8a7145180d1b0818ea573db8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-03-26 INTRODUCTION: There is a diversity of prescriptions of orthodontic appliances that the orthodontist has available to use his clinical practice. Also, there is a lack of evidence regarding the effect of insertion of rectangular strands into orthodontic molar tubes on the final positioning of these teeth when different prescriptions are used. Therefore, this study had the objective of analyzing whether the torque present in the tubes of the pre-adjusted devices of different prescriptions would alter the ideal inclination of the first and second lower and upper molars. METHODS: The sample consisted of gypsum models of 30 patients who presented ideal torques. Tubes with 0.22x0.028 "slot of four prescriptions were used: MBT, Roth, Damon and Edgewise. The tubes were glued on the plaster model, in the center of the clinical crown of each tooth, vestibular face. In addition to this gluing position, the position of one millimeter below the center of the crown was evaluated in the lower models. The gap between the steel rectangular wires (0.019x0.025 "and 0.021x0.025") and the tubes was measured to verify if the initial torque was maintained, and the effective torque was quantified. CONCLUSIONS: In the 0.019 wire x0.025 "there were higher number of optimum torque maintenance, regardless of the prescription tested, when compared to 0.021x0.025" wire. The Roth prescription obtained the closest results to zero in the evaluation of the effective torque, indicating a small average torque change. INTRODUÇÃO: Há uma diversidade de prescrições de aparelhos ortodônticos que o ortodontista dispõe para empregarem sua prática clínica. Também, existe uma escassez de evidências com relação ao efeito da inserção de fios retangulares em tubos ortodônticos de molares sobre o posicionamento final destes dentes quando utilizadas diferentes prescrições. Por isso, esse estudo teve o objetivo de analisar se o torque presente nos tubos dos aparelhos pré-ajustados de diferentes prescrições alteraria a inclinação ideal dos primeiros e segundos molares inferiores e superiores. MÉTODOS: A amostra foi composta por modelos de gesso de 30 pacientes que apresentavam torques ideais. Foram utilizados tubos com slot 0.22x0.028” de quatro prescrições: MBT, Roth, Damon e Edgewise. Os tubos foram colados no modelo de gesso, no centro da coroa clínica de cada dente, face vestibular. Além dessa posição de colagem, foi avaliado, nos modelos inferiores, a posição de um milímetro abaixo do centro da coroa. Mediu-se a a folga entre os fios retangulares de aço (0.019x0.025” e 0.021x0.025”) e os tubos, para verificar se o torque inicial seria mantido, e quantificou-se o torque efetivo. CONCLUSÕES: No fio 0.019x0.025” houve maior número de manutenções do torque ideal, independente da prescrição testada, quando comparado com o fio 0.021x0.025”. A prescrição Roth obteve os resultados mais próximos a zero na avaliação do torque efetivo, indicando uma pequena alteração média do torque.
- Published
- 2018
46. Moyers analysis study manually and through table scanner images and computerized multislice tomography
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Noedel, Daniane Deliberalli, Grehs, Renésio Armindo, Ferrazzo, Vilmar Antonio, and Vizzotto, Mariana Boessio
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Dental models ,Dentição mista ,Mixed dentition ,Modelos dentários ,Tomografia computadorizada ,CIENCIAS DA SAUDE::ODONTOLOGIA [CNPQ] ,Computed tomography ,Imagem tridimensional ,Three-dimensional images - Abstract
The present study has aimed to perform the Moyers analysis in plaster models by the traditional method (manually), the Moyers analysis in 3D virtual models scanned through the flatbed scanner and the analysis in 3D virtual models obtained by multislice computed tomography and to compare the results of these three methods of analysis among themselves. In order to do so, 90 models of inferior arch were selected from patients in the mixed dentition phase, belonging to the orthodontic documentation of the subject of Orthodontics of the Federal University of Santa Maria. These 90 models were analyzed by a single, previously trained and calibrated examiner, both for manual Moyers analysis and for virtual analyzes. The manual analysis was performed with a digital caliper and according to the method recommended by the author, the virtual analyzes were performed on the same plaster models scanned by a flatbed scanner and by multislice computed tomography. The software in which the virtual Moyers analysis was performed was Netfabb Basic 7.4 and the software HOROS 3.0 was used to convert the DICOM images of the models obtained by multislice computed tomography into STL images. The MeshMixer 3.2 program was used to make model cutouts and adjustments to tomographic images. After the data collection, the statistical analysis was carried out. The data were analyzed for normality using the Kolmogorov-Smirnov and Shapiro-Wilk tests, and the ANOVA / Bonferroni test for repeated measures was used to compare the different methods of analysis (normal distribution of data). The Bland-Altman analysis was used to evaluate the agreement between the methods. No statistical differences were found between the virtual methods of analysis when compared to the manual method (gold standard) and the methods seemed in agreement with each other. Based on the findings of this study, it can be concluded that the virtual models obtained by means of flatbed scanner and multislice computed tomography are accurate and generate reliable values from the clinical point of view when compared to conventional plaster models. O objetivo do presente estudo foi realizar a análise de Moyers em modelos de gesso pelo método tradicional (manualmente), a análise de Moyers em modelos virtuais 3D digitalizados por scanner de mesa e a análise em modelos virtuais 3D obtidos por tomografia computadorizada multislice e comparar os resultados obtidos destes três métodos de análise entre si. Para isso, foram selecionados 90 modelos de gesso da arcada inferior, oriundos de pacientes em fase de dentição mista, pertencentes à documentação ortodôntica da Disciplina de Ortodontia da Universidade Federal de Santa Maria. Os 90 modelos foram analisados por um único examinador, previamente treinado e calibrado, tanto para a análise de Moyers manual, quanto para as análises virtuais. A análise manual foi realizada com paquímetro digital e de acordo com o método preconizado pelo autor, as análises virtuais foram realizadas sobre os mesmos modelos de gesso digitalizados por um scanner de mesa e por tomografia computadorizada multislice. O software onde foram realizadas as análises de Moyers virtuais foi o Netfabb Basic 7.4 e o software HOROS 3.0 foi utilizado para converter as imagens DICOM dos modelos obtidos pela tomografia computadorizada multislice em imagens STL. O programa MeshMixer 3.2 foi utilizado para fazer os recortes dos modelos e os ajustes nas imagens tomográficas. Após a coleta de dados, a análise estatística foi realizada. Os dados foram analisados quanto a sua normalidade, através dos testes Kolmogorov-Smirnov e Shapiro-Wilk e para a comparação entre os diferentes métodos de análise foi realizado o teste ANOVA/Bonferroni para medidas repetidas (distribuição normal dos dados). A análise de Bland-Altman foi utilizada para avaliar a concordância entre os métodos. Não foram encontradas diferenças estatísticas entre os métodos virtuais de análise quando comparados ao método manual (padrão-ouro) e os métodos se mostraram concordantes entre si. Com base nos achados encontrados neste estudo pode-se concluir que os modelos virtuais obtidos por meio de scanner de mesa e tomografia computadorizada multislice são precisos e geram valores confiáveis do ponto de vista clínico quando comparados aos modelos convencionais de gesso.
- Published
- 2017
47. 3D analysis of effects of primary surgeries in cleft lip/palate children during the first two years of life
- Author
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Paula Karine Jorge, Arnaldo Pinzan, Cleide Felício de Carvalho Carrara, Karine Laskos Sakoda, Maria Aparecida de Andrade Moreira Machado, Fabrício Pinelli Valarelli, and Thais Marchini de Oliveira
- Subjects
Male ,Time Factors ,Cephalometry ,3d analysis ,Cleft Lip ,03 medical and health sciences ,MODELOS DENTÁRIOS ,Dental Arch ,Imaging, Three-Dimensional ,0302 clinical medicine ,Reference Values ,Medical Illustration ,Maxilla ,medicine ,Humans ,General Materials Science ,030223 otorhinolaryngology ,Maxillary growth ,Orthodontics ,Analysis of Variance ,Cleft lip palate ,business.industry ,Anterior arch ,Age Factors ,Infant ,Repeated measures design ,030206 dentistry ,Craniometry ,Unilateral complete cleft lip ,lcsh:RK1-715 ,Cleft Palate ,Dental arch ,Treatment Outcome ,medicine.anatomical_structure ,Child, Preschool ,lcsh:Dentistry ,Female ,Growth and Development ,Anatomic Landmarks ,business ,Dental Models - Abstract
This study aimed at monitoring the maxillary growth of children with cleft lip/palate in the first two years of life, and to evaluate the effects of primary surgeries on dental arch dimensions. The sample consisted of the three-dimensional digital models of 25 subjects with unilateral complete cleft lip and palate (UCLP) and 29 subjects with isolated cleft palate (CP). Maxillary arch dimensions were measured at 3 months (before lip repair), 1 year (before palate repair), and at 2 years of age. Student’s ttest was used for comparison between the groups. Repeated measures ANOVA followed by Tukey’s test was used to compare different treatment phases in the UCLP group. Paired ttest was used to compare different treatment phases in the CP group. P
- Published
- 2017
48. The association between palatal rugae pattern and dental malocclusion
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Mubassar Fida, Attiya Shaikh, and Farheen Fatima
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0301 basic medicine ,Adult ,Male ,Palate, Hard ,Adolescent ,Modelos dentários ,Permanent dentition ,Online Article ,Orthodontics ,Class iii ,Left sided ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Medicine ,Humans ,030216 legal & forensic medicine ,Dental malocclusion ,Dental models ,Rugae ,business.industry ,Palate ,Significant difference ,Mouth Mucosa ,medicine.disease ,Palato ,lcsh:RK1-715 ,030104 developmental biology ,Cross-Sectional Studies ,Má oclusão ,lcsh:Dentistry ,Palatal rugae ,Female ,Oral Surgery ,Malocclusion ,business - Abstract
Introduction: Palatal rugae complete its development during early intrauterine life, whereas dental malocclusions in permanent dentition establishes several years into the post-natal life. Objective: The objective of present study was to determine if there is an association between the palatal rugae pattern and Angle’s classes of malocclusion. Methods: A cross-sectional study was conducted on pretreatment dental casts of 184 patients. The sample was divided into the following groups: Class I, Class II div. 1, Class II div. 2, and Class III. The number of palatal rugae was recorded, bilaterally. The length, pattern and orientation of three anterior-most primary rugae on both sides were recorded. Results: The mean age of the study sample was 17.8 ± 5.4 years. The mean number of the palatal rugae was 11.18 ± 2.5, with significant differences among different malocclusion groups. The length of the first rugae on left side and third rugae on both sides varied significantly among the groups (p< 0.05). Similarly, the pattern of palatal rugae was also found to be significantly different among the malocclusion groups. The right sided rugae did not have any significant difference in the orientation in different malocclusion groups; however, the left sided rugae showed significant differences among the four malocclusion groups (p< 0.001). Conclusions: The current study showed subtle differences in the palatal rugae pattern among the Angle’s classes of malocclusion. Similarly, the length and orientation of some rugae were also found to be significantly different between malocclusion groups. RESUMO Introdução: as rugas palatinas completam seu desenvolvimento ainda no início da vida intrauterina, enquanto as más oclusões dentárias na dentição permanente se estabelecem após vários anos de vida pós-natal. Objetivos: o presente estudo foi planejado para determinar se há associação entre o padrão das rugas palatinas e as más oclusões, segundo a classificação Angle. Métodos: um estudo transversal foi conduzido a partir dos modelos dentários pré-tratamento de 184 pacientes. A amostra foi dividida em quatro grupos: Classe I; Classe II, divisão 1; Classe II, divisão 2 e Classe III. O número de rugas palatinas foi registrado bilateralmente. O comprimento, padrão e a orientação das três rugas primárias mais anteriores de ambos os lados foram registrados. Resultados: a idade média da amostra desse estudo foi de 17,8 ± 5,4 anos. O número médio de rugas palatinas foi de 11,18 ± 2,5, com diferenças significativas entre os grupos de más oclusões. O comprimento da primeira ruga do lado esquerdo e da terceira ruga em ambos os lados variou significativamente entre os grupos (p< 0,05). De forma semelhante, o padrão das rugas palatinas também mostrou diferença significativa entre os grupos com diferentes má oclusões. As rugas do lado direito não apresentaram nenhuma diferença significativa de orientação nos diferentes grupos; no entanto, as rugas do lado esquerdo apresentaram diferenças significativas nos grupos estudados (p< 0,001). Conclusões: o presente estudo demonstrou diferenças sutis quanto ao padrão das rugas palatinas entre as classes de má oclusão definidas por Angle. Do mesmo modo, o comprimento e a orientação de algumas rugas também se apresentaram consideravelmente diferentes entre os grupos com diferentes má oclusões.
- Published
- 2019
49. Transversal changes in dental arches from non-extraction treatment with self ligating brackets
- Author
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Liana Fattori, Yasushi Inoue Myiahira, Liliana Ávila Maltagliati, Mauricio de Almeida Cardoso, and Leopoldino Capelozza Filho
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Adult ,Molar ,Adolescent ,Tooth Movement Techniques ,Orthodontic Brackets ,Modelos dentários ,Dentistry ,Orthodontics ,Malocclusion, Angle Class I ,Orthodontic brackets ,Mandibular second molar ,Young Adult ,Dental Arch ,stomatognathic system ,Nickel ,Premolar ,Humans ,Odontometry ,Orthodontic Appliance Design ,Medicine ,Transverse dimension ,Arch ,Child ,Titanium ,Dental models ,business.industry ,Corrective orthodontics ,Lower intensity ,Class i malocclusion ,Stainless Steel ,Models, Dental ,lcsh:RK1-715 ,Ortodontia corretiva ,medicine.anatomical_structure ,lcsh:Dentistry ,Tooth Extraction ,Oral Surgery ,Braquetes ortodônticos ,business ,Copper - Abstract
OBJECTIVE: The present study aimed at analyzing, with the use of dental casts, the transverse changes of the upper and lower dental arches, after non-extraction orthodontic treatment, with self-ligating brackets. METHODS: The sample comprised 29 patients, all presenting Class I malocclusion with upper and lower crowding of at least 4 mm and treated only with a fixed appliance, without stripping, extraction or distalization. The dental casts were obtained before and after leveling with 0.019 x 0.025-in stainless steel archwires. CONCLUSION: The results indicated that the majority of transverse changes occurred at the premolar areas, both the first and the second, as well as on the upper and lower dental arches. The intercanine distance increased 0.75 mm, on average, in the upper arch and 1.96 mm in the lower arch. The molars also demonstrated a tendency towards an increase in their transverse dimension, however, at a lower intensity comparing to premolars. All measurements presented statistically significant differences with the exception of the maxillary second molars. OBJETIVO: o presente estudo teve por objetivo avaliar, em modelos de gesso, as alterações dimensionais transversais das arcadas dentárias, decorrentes do tratamento ortodôntico sem extração, com braquetes autoligáveis. MÉTODOS: a amostra constou de 29 pacientes que apresentavam má oclusão de Classe I, com apinhamento superior e inferior mínimo de 4mm, que foram tratados unicamente com aparelho fixo, sem desgastes, extração ou distalização dentária. Os modelos de gesso foram obtidos antes e ao final do tratamento. CONCLUSÃO: os resultados indicaram que as maiores alterações transversais ocorreram na região dos pré-molares, tanto dos primeiros como dos segundos, e tanto na maxila como na mandíbula. A distância intercaninos teve aumento, em média, de 0,75mm na arcada superior, e de 1,96mm na inferior. Os molares também demonstraram tendência de aumento das dimensões transversais, porém em menor intensidade que os pré-molares. Todas as medidas denotaram diferença estatisticamente significativa, com exceção dos segundos molares superiores.
- Published
- 2013
50. Validating the use of digital models for the American Board of Orthodontics objective grading system
- Author
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Rocha, Barbara Nobrega Goyanes de Andrade, Carvalho, Felipe de Assis Ribeiro, Quintão, Cátia Cardoso Abdo, Almeida, Rhita Cristina Cunha, Capelli Júnior, Jonas, and Nojima, Lincoln Issamu
- Subjects
Dental Occlusion ,Modelos dentários ,Software Validation ,Validação de Programas de Computador ,Orthodontics ,Dental Models ,CIENCIAS DA SAUDE::ODONTOLOGIA::ORTODONTIA [CNPQ] ,Oclusão Dentária ,Ortodontia - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-07T15:03:52Z No. of bitstreams: 1 DISSERTACAO_FINAL_BARBARA_NOBREGA_GOYANES_DE_ANDRADE_ROCHA.pdf: 3389020 bytes, checksum: 3a7aaeac65690c37b8421cee55045397 (MD5) Made available in DSpace on 2021-01-07T15:03:52Z (GMT). No. of bitstreams: 1 DISSERTACAO_FINAL_BARBARA_NOBREGA_GOYANES_DE_ANDRADE_ROCHA.pdf: 3389020 bytes, checksum: 3a7aaeac65690c37b8421cee55045397 (MD5) Previous issue date: 2016-02-17 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Dental plaster models are widely used in clinical practice and dental research. Besides having legal value, they help in the diagnosis and treatment. However, with the improvement of digital techniques, they tend to lose ground to the three-dimensional virtual dental casts. Digital technology has been widely used, including photographs, radiographs, treatment records and three-dimensional dental casts. The American Board of Orthodontics is recognized by orthodontists in the whole world and uses digital resources for assessment of orthodontic submissions, with the exception of virtual final casts. This is because it has not been created a satisfactory methodology for evaluating virtual models related to the American Board of Orthodontics objective grading system. The aim of this study was to create a methodology for analysing digital models, compatible with the Objective Grading System. For this purpose, 30 final orthodontic casts were measured manually using the American Board of Orthodontics method and virtually by scanning the plaster casts in Dental Scanner (Pisa, Italy) and measuring in Geomagic Qualify software 2013.0.1: 64 through a measuring technique developed by the authors. The methods were compared using paired t test and Pearson's correlation. The methodology established in this study appears to be a viable alternative for assessing the OGS in digital models for 4 of the 7 variables tested. Other researches are needed to try to adapt the different digital models analysis methods for creating a software designed specifically for this purpose Modelos dentários de gesso são muito utilizados tanto na prática quanto em pesquisa odontológica. Além de possuírem valor legal, eles auxiliam no diagnóstico e planejamento dos casos clínicos. No entanto, com o avanço das técnicas digitais, estes tendem a perder espaço para os modelos de estudo tridimensionais virtuais. A tecnologia digital tem sido muito utilizada, incluindo fotografias, radiografias, registros do tratamento realizado e modelos de estudo tridimensionais. O Board Americano de Ortodontia tem grande prestígio e reconhecimento na Ortodontia mundial e utiliza todos esses recursos digitais para avaliação das finalizações ortodônticas, com exceção dos modelos virtuais. Isso se deve ao fato de ainda não ter sido criada uma metodologia de avaliação de modelos virtuais relacionados ao final do tratamento ortodôntico satisfatória para os padrões do Board Americano. O objetivo deste estudo foi criar uma metodologia de análise de modelos digitais, compatível com o modelo de medição utilizado pelo Board Americano de Ortodontia, chamado Objective Grading System . Para isso 30 modelos finais de tratamento ortodôntico foram medidos utilizando o método manual do Board Americano de Ortodontia e virtualmente através da digitalização dos mesmos pelo Dental Scanner (Pisa, Itália) e medidos no software Geomagic Qualify 2013.0.1:64 através de técnica de medição desenvolvida pelos autores. As metodologias foram comparadas utilizando o Teste t pareado e correlação de Pearson. A metodologia criada neste estudo parece ser uma alternativa viável para a avaliação do OGS em modelos digitais para 4 das 7 variáveis analisadas, sendo necessários mais estudos para adequação das metodologias de análise de modelos digitais e para a criação de softwares desenhados especificamente para este propósito.
- Published
- 2016
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