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1. Influence of torque and bone type on stability quotient of two implant platforms: a clinical trial

Author

Lisiane Cristina BANNWART, Daniela Micheline dos SANTOS, João Paulo do Vale SOUZA, Clóvis Lamartine de Moraes MELO NETO, Emily Vivianne Freitas da SILVA, José Vitor Quinelli MAZARO, Leda Maria Piscinini SALZEDAS, and Marcelo Coelho GOIATO

Subjects
Dental Implants, Cortical Bone, Torque, Alveolar Bone Loss, Dentistry, RK1-715
Abstract

Abstract The objective of this study was to analyze the influence of insertion torque, bone type, and peri-implant bone loss on implant stability quotient (ISQ) of cylindrical external hexagon (EH) and Morse Taper (MT) implants. Forty-four single implants were placed in the edentulous areas of 20 patients who met the inclusion and exclusion criteria. Immediately after implant placement (t1) and after osseointegration (four and six months for mandible and maxilla, respectively) (t2), insertion torque, resonance frequency, and peri-implant bone loss were measured using probing depths and digital periapical radiography. A significant difference was noted in the ISQ values between t1 and t2 in type III bone for EH and MT implants. No significant difference in bone loss values was observed when comparing bone types for EH or MT in all evaluated sites. Based on marginal bone loss assessed using radiography, there was no significant difference between the MT and EH groups. A positive correlation between torque and ISQ t1 value was observed for MT (correlation: 0.439; p = 0.041) and EH (correlation: 0.461; p = 0.031) implants. For EH and MT implants, the greater the insertion torque, the greater was the ISQ value (moderately positive correlation). A weak negative correlation was found between bone type and ISQ t1 for MT implants. Contrarily, no correlation was observed between bone type and ISQ t1 for EH implants. In all cases, bone loss around the implants was clinically normal.

Published
2024
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2. Flexural resistance of 3D printing resin compared to conventional acrylic resins employed to build occlusal bite splints

Author

Otavio Marino dos SANTOS NETO, Gabriele Maurício de CERQUEIRA, João Paulo do Vale SOUZA, Rossana Pereira de ALMEIDA, José Vitor Quinelli MAZARO, and Adriana Cristina ZAVANELLI

Subjects
3D printing resins, acrylic resins, occlusal bite splint, Medicine, Dentistry, RK1-715
Abstract

Abstract Introduction with the technological advance in dentistry, light-polymerized three-dimensional (3D) printing resins had become an alternative for the manufacture of occlusal splint splints. Objective the present study aimed to analyze the flexural strength of a resin for 3D printing compared to conventional acrylic resins (chemically activated and thermally activated), under the influence of thermocycling. Material and method 60 specimens were made, which were distributed in six experimental groups (n = 10), according to the resin employed (chemically activated acrylic resin, thermally activated acrylic resin and 3D printing resin) and the treatment received (control and thermocycling). The specimens were submitted to flexural strength by the three-point flexural test. Result data analysis showed that the material factor (

Published
2023
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3. Data collection about failures in fixed partial dentures: 1-year monitoring

Author

Adriana Cristina ZAVANELLI, José Vitor Quinelli MAZARO, Pâmella Izza NÓBREGA, Rosse Mary FALCÓN-ANTENUCC, and Ricardo Alexandre ZAVANELLI

Subjects
Patient satisfaction, Fixed partial denture, Failures, Dentistry, RK1-715
Abstract

Objective: The aim of this study was to evaluate the satisfaction of patients rehabilitated with fixed partial denture and the incidence of failures/clinical complications of prostheses after one year. Methods: The patients answered a questionnaire about the satisfaction degree with dental treatment performed and care maintenance for prosthesis conservation. Clinical and radiographic evaluations of the prosthesis were performed. Data were tabulated for descriptive analysis of the factors assessed, with calculation of absolute frequencies and percentages, and chi-square and Fisher’s exact test. Results: A total of 9.67% failures were found. The most common was the prosthesis loosening (57.14%), followed by ceramic fracture (28.57%), and abutment tooth fracture (14.29%). Biological failures were observed in 30.65%. The most common failure was gingival recession (52.00%), periodontal pocket (24.00%), support periodontal involvement (16.00%), and recurrent caries (4.00%). Radiographic examination showed that 70.97% of the total number evaluated had some kind of failure. There was statistically significant association between satisfaction degree and technical failure (p=0.04). Conclusion: Patients were satisfied after observation period of 1 year. The main failures detected were: crown cementation failure and ceramic fracture; gingival recession, periodontal pocket; manufacture and cementation of short intraradicular post with increased diameter and crown cervical misfit.

Published
2018
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4. Streptococcus mutans adhesion and releasing of metallic ions in dental alloys

Author

Adriana Cristina Zavanelli, Ricardo Alexandre Zavanelli, José Vitor Quinelli Mazaro, and Rosse Mary Falcón-Antenucci

Subjects
Dental alloys, Corrosion, Ions, Dentistry, RK1-715
Abstract

Aim: To evaluate the adherence of Streptococcus mutans to the surface of the amalgam and copper/aluminum alloy samples and also evaluate the release of metallic ions. Methods: The prepared medium was changed every 72 h and analyzed by atomic absorption spectrophotometer. Samples were removed from the prepared medium at 15, 30, 48 and 60 days. Results: The result shows that ions released were statistically different among all groups, and so were both biofilm and pits formation and the corrosion induced by the S. mutans in both types of samples. SEM observation of the samples immersed in the prepared medium with S. mutans showed adherence of microorganisms on the whole surface, in all groups. Conclusions: The S. mutans adhere to both amalgam and copper/aluminum alloy causing corrosion of those restorations. S. mutans produced a greater ions release in Cu/Al alloy; in amalgam, the ions release was not influenced by exposure to S. mutans.

Published
2015
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5. Técnicas de confección de prótesis faciales Techniques used for making of facial prostheses

Author

Marcelo Coelho Goiato, Eduardo Vedovatto, José Vitor Quinelli Mazaro, Marcelo Matida Hamata, Humberto Gennari Filho, Rose Mary Falcón, and Daniela Micheline dos Santos

Subjects
prótesis facial, Facial prosthesis, Dentistry, RK1-715, Medicine (General), R5-920
Abstract

Las prótesis faciales constituyen parte integrante de la rehabilitación de pacientes que sufrieron daños en la cara, sea de origen patológica, traumática o congénita. Aunque el éxito del tratamiento con prótesis faciales está asociado con la capacidad artística del profesional en reproducir las estructuras perdidas, no se puede descuidar la buena adaptabilidad de las prótesis en cuanto a la asociación de materiales y técnicas empleadas para la confección de prótesis buco-maxilofaciales. El objetivo de este trabajo fue, mediante la revisión de la literatura, mostrar los principales conceptos relacionados con las técnicas de confección de prótesis faciales y asociar nuestra experiencia clínica con el pronóstico de las prótesisFacial prostheses are a integral part of rehabilitation of patients underwent face damages, being of pathologic, traumatic or congenital origin. Although success of treatment with facial prostheses is associated with artistic ability of professional to reproduce lost structures, we can not to obviate the good adaptability of prostheses regards association of material and techniques used to make buccomaxillofacial prostheses.

Published
2009

6. Evaluation of color stability of different temporary restorative materials

Author

José Vitor Quinelli Mazaro, Luiz Miguel Minani, Adriana Cristina Zavanelli, Caroline Cantieri de Mello, and Cleidiel Aparecido Araújo Lemos

Subjects
Dental restoration temporary, color, dental prosthesis, Medicine, Dentistry, RK1-715
Abstract

AbstractIntroductionTemporary restorative materials are widely used, however, little is know about their color stability.Objectiveto evaluate the color stability of the following temporary restorative materials: acrylic and bis-acrylic resins after immersion in pigmenting solutions for different periods of storage.Material and methodFour materials were tested (Dêncor/Clássico, Protemp 4/3M ESPE; Structur 2 SC/Voco; Luxatemp AM Plus/DMG) and 30 test specimens (15 mm in diameter and 2 mm thick) per material were fabricated. They were divided according to the storage medium (artificial saliva, saliva + cola type soda, and saliva + coffee) and storage time intervals (2, 5, 7 and 15 days). Color measurements were made before and after immersions, with use of a spectrophotometer, by means of the CIE L*a*b* system. The data were analyzed by the analysis of variance and the Tukey Test, at a level of significance of 5%.ResultAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p

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7. Influence of diameter and intraradicular post in the stress distribution. Finite element analysis

Author

Cleidiel Aparecido Araujo LEMOS, Daniel Augusto de Faria ALMEIDA, Victor Eduardo de Souza BATISTA, Carol Cantieri MELLO, Fellippo Ramos VERRI, Eduardo Piza PELLIZZER, and José Vitor Quinelli MAZARO

Subjects
Dental prosthesis, post and core technique, denture partial fixed, Medicine, Dentistry, RK1-715
Abstract

Abstract Introduction The biomechanical behavior of endodontically treated teeth depending on the selected restorative material and tooth situation to be restored. Objective To analyze by the two-dimensional finite element method the biomechanical behavior of different diameters in intraradicular posts and teeth with coronal remaining of 2mm. Material and method Six models were made with three types of posts, as follows: Glass fiber post, carbon fiber post, and cast metal post, both with diameter # 1 (1.1 mm in diameter) and # 2 (1.3 mm of diameter). The modeling was performed using the Rhinoceros 4.0 program. The FEMAP 10.2 and NEiNastran 9.2 programs were used to develop finite element models. The loading used was 100N for axial and oblique forces. The results were visualized using the von Mises stress map. The statistical analysis was made using analysis of variance (ANOVA) and Tukey post-test, with a significance level of 5%. Result The oblique loading stress values were higher than the axial loading (p

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8. Data collection about failures in fixed partial dentures: 1-year monitoring

Author

Ricardo Alexandre Zavanelli, Adriana Cristina Zavanelli, Rosse Mary Falcón-Antenucc, José Vitor Quinelli Mazaro, Pâmella Izza Nóbrega, Universidade Estadual Paulista (Unesp), and Universidade Federal de Goiás Faculdade de Odontologia Departamento de Reabilitação Oral

Subjects
Fixed partial denture, Gingival and periodontal pocket, Patient satisfaction, Failures, business.industry, medicine.medical_treatment, Tooth Fracture, Dentistry, Prosthesis, Crown (dentistry), Prótese parcial fixa, Satisfação do paciente, lcsh:RK1-715, Exact test, lcsh:Dentistry, Medicine, medicine.symptom, business, falhas, General Dentistry, Abutment (dentistry), Gingival recession
Abstract

Made available in DSpace on 2019-10-03T17:31:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-09-01. Added 1 bitstream(s) on 2019-10-04T16:20:50Z : No. of bitstreams: 1 S1981-86372018000300250.pdf: 638647 bytes, checksum: e1f32dc6afba7a041578f967e4cf0fb8 (MD5) RESUMOObjetivo: O objetivo deste estudo foi avaliar a satisfação dos pacientes reabilitados com prótese parcial fixa e a incidência de falhas/complicações clínicas das próteses instaladas após um ano.Métodos: Os pacientes responderam um questionário abrangendo o grau de satisfação pelo tratamento odontológico efetuado e os cuidados de manutenção realizados para a conservação da prótese. Na sequência foi realizada avaliação clínica e radiográfica das próteses. Os dados obtidos foram tabulados para análise descritiva dos fatores avaliados com cálculo de frequência absoluta e percentual, e teste de Qui-quadrado e Fischer.Resultados: Foram encontradas 9,67% de falhas, sendo a mais comum a descimentação (soltura da prótese) (57,14%), seguida da fratura da cerâmica (28,57%), e um caso de fratura no dente pilar (14,29%). As falhas biológicas foram observadas em 30,65%. A falha mais comum foi a recessão gengival (52,00%), seguida por bolsa periodontal (24,00%), envolvimento periodonto de suporte (16,00%), e recidiva de cárie (4,00%). No exame radiográfico 70,97% do número total avaliado apresentaram algum tipo de falha. Houve associação estatisticamente significante entre grau de satisfação e falhas mecânicas (p=0,04).Conclusão: Os pacientes ficaram satisfeitos após um período de acompanhamento de 1 ano. As principais falhas detectadas foram: falha de cimentação da coroa e fratura da cerâmica; Recessão gengival, bolsa periodontal; confecção e cimentação de pino intraradicular curto, pino com diâmetro aumentado e desajuste cervical da coroa. ABSTRACTObjective: The aim of this study was to evaluate the satisfaction of patients rehabilitated with fixed partial denture and the incidence of failures/clinical complications of prostheses after one year.Methods: The patients answered a questionnaire about the satisfaction degree with dental treatment performed and care maintenance for prosthesis conservation. Clinical and radiographic evaluations of the prosthesis were performed. Data were tabulated for descriptive analysis of the factors assessed, with calculation of absolute frequencies and percentages, and chi-square and Fisher’s exact test..Results: A total of 9.67% failures were found. The most common was the prosthesis loosening (57.14%), followed by ceramic fracture (28.57%), and abutment tooth fracture (14.29%). Biological failures were observed in 30.65%. The most common failure was gingival recession (52.00%), periodontal pocket (24.00%), support periodontal involvement (16.00%), and recurrent caries (4.00%). Radiographic examination showed that 70.97% of the total number evaluated had some kind of failure. There was statistically significant association between satisfaction degree and technical failure (p=0.04).Conclusion: Patients were satisfied after observation period of 1 year. The main failures detected were: crown cementation failure and ceramic fracture; gingival recession, periodontal pocket; manufacture and cementation of short intraradicular post with increased diameter and crown cervical misfit. Universidade Estadual Paulista Júlio de Mesquita Filho Faculdade de Odontologia Departamento de Materiais Odontológicos e Prótese Universidade Estadual Paulista Júlio de Mesquita Filho Faculdade de Odontologia Universidade Federal de Goiás Faculdade de Odontologia Departamento de Reabilitação Oral Universidade Estadual Paulista Júlio de Mesquita Filho Faculdade de Odontologia Departamento de Materiais Odontológicos e Prótese Universidade Estadual Paulista Júlio de Mesquita Filho Faculdade de Odontologia

Published
2018

9. Percepção e expectativa. O que os pacientes realmente querem do tratamento dental?

Author

Adriana Cristina Zavanelli, Mariana Vilela Sônego, Ricardo Alexandre Zavanelli, Rosse Mary Falcón-Antenucci, José Vitor Quinelli Mazaro, Universidade Estadual Paulista (Unesp), and Universidade Federal de Goiás Faculdade de Odontologia Departamento de Reabilitação Oral

Subjects
media_common.quotation_subject, Patient satisfaction, Esthetics, dental, Satisfação do paciente, stomatognathic diseases, Estética dentária, Inquéritos e questionários, Nursing, stomatognathic system, Perception, Psychology, Surveys and questionnaires, General Dentistry, media_common
Abstract

Made available in DSpace on 2018-11-12T17:27:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-09-01. Added 1 bitstream(s) on 2018-11-12T17:35:46Z : No. of bitstreams: 1 S1981-86372017000300243.pdf: 159337 bytes, checksum: 09cb8e0fd147ad427b9d9053eacbd4b8 (MD5) RESUMOObjetivo Avaliar os aspectos subjetivos relacionados à percepção da aparência dental e expectativas de pacientes que recebem tratamento odontológico nas clínicas de graduação da Faculdade de Odontologia de Araçatuba.Métodos Foram avaliados 362 pacientes de ambos os sexos com idade superior a 18. O questionário incluiu perguntas sobre dados demográficos, perguntas para avaliar a estética facial e dentária, a satisfação dental e tratamentos considerando a noção dos pacientes de melhorar a estética dental. Os dados coletados foram analisados por meio de estatística descritiva e o teste do qui-quadrado.Resultados O fator dentes para análise facial e o fator posicionamento no arco para análise sorriso foram considerados os temas mais importantes a respeito da estética, de acordo com os entrevistados. 67,5% dos pacientes estavam insatisfeitos com a aparência de seus dentes, a insatisfação com a cor foi o fator mais importante (66,8%). O tratamento mais desejado foi o clareamento dental e 85,0% dos pacientes disse sim a ele.Conclusão Os pacientes dão grande valor aos dentes sobre a aparência rosto, e ele pode ser visto que os tratamentos estéticos são altamente valorizados em todos os grupos etários. Há uma necessidade de tratamentos para restabelecer a função, mas os tratamentos para melhorar a aparência dentária foram os mais solicitados. ABSTRACTObjective The aim of this study was to investigate the subjective aspects related to the perception of dental appearance and expectations of patients who receive dental treatment in graduation clinics of the Araçatuba Dental School.Methods It was evaluated 362 patients of both gender aged over 18. The questionnaire included questions of demographic data, questions to assess facial and dental aesthetics, dental satisfaction and treatments considering patients notion to improve dental esthetics. The data collected was analyzed using descriptive statistics and the chi-square test.Results The factor teeth for facial analysis and factor positioning in the arch for smile analysis were considered the most important subjects regarding the esthetic according to the respondents. 67.5% of patients were dissatisfied with the appearance of their teeth, and dissatisfaction with the color was the most important factor (66.8%). The treatment most desired was tooth whitening and 85.0% of patients said yes to it.Conclusion Respondents place great value on the teeth on the face appearance, and it can be seen that aesthetic treatments are highly valued in all age groups. There is a need for treatments to restore the function, but treatments to improve dental appearance were the most requested. Universidade Estadual Paulista Faculdade de Odontologia Departamento de Materiais Odontológicos e Prótese Universidade Federal de Goiás Faculdade de Odontologia Departamento de Reabilitação Oral Universidade Estadual Paulista Faculdade de Odontologia Departamento de Materiais Odontológicos e Prótese

Published
2017

10. Avaliação da estabilidade de cor de diferentes materiais restauradores provisórios

Author

Adriana Cristina Zavanelli, José Vitor Quinelli Mazaro, Caroline Cantieri de Mello, Luiz Miguel Minani, Cleidiel Aparecido Araujo Lemos, and Universidade Estadual Paulista (Unesp)

Subjects
Materials science, prótese dentária, Significant difference, lcsh:R, dental prosthesis, lcsh:Medicine, General Medicine, Restauração dentária temporária, color, lcsh:RK1-715, lcsh:Dentistry, Tukey's range test, cor, Dental restoration temporary, Nuclear chemistry
Abstract

Made available in DSpace on 2018-11-12T17:27:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-10-01. Added 1 bitstream(s) on 2018-11-12T17:35:01Z : No. of bitstreams: 1 S1807-25772015000500262.pdf: 715224 bytes, checksum: 281b604a1e8f06ca9d8f9f15b1e9ab10 (MD5) ResumoIntroduçãoOs materiais restauradores provisórios são amplamente utilizados, porém pouco se sabe a respeito de sua estabilidade de cor.ObjetivoAvaliar a estabilidade de cor de materiais restauradores provisórios: resina acrílica e resinas bisacrílicas, após a imersão em soluções pigmentantes, durante diferentes períodos de armazenamento.Material e métodoQuatro materiais foram testados (Dêncor/Clássico, Protemp 4/3M ESPE; Structur 2 SC/Voco; Luxatemp AM Plus/DMG) sendo confeccionadas 30 amostras (15 mm de diâmetro e 2 mm de espessura) por material. Estes foram divididos de acordo com o meio de imersão (saliva artificial, saliva + refrigerante tipo cola e saliva + café) e período de armazenamento (2, 5, 7 e 15 dias). As mensurações de cor foram realizadas antes e após as imersões, com auxílio de um espectrofotômetro, através do sistema CIE L*a*b*. Os dados foram analisados com análise de variância (ANOVA) e Tukey, com nível de significância à 5%.ResultadoA resina acrílica apresentou maior estabilidade de cor quando comparada às resinas bisacrílicas (p

Published
2015

11. Effect of Mechanical Cycling on Screw Torque in External Hexagon Implants with and without Platform Switching

Author

José Vitor Quinelli Mazaro, Bruno Andrade Cantharino de Carvalho, Rosse Mary Falcón-Antenucci, Paulo Sérgio Perri de Carvalho, Eduardo Vedovatto, São Leopoldo Mandic (SLMANDIC), and Universidade Estadual Paulista (Unesp)

Subjects
Dental Implants, Materials science, platform switching, Bone Screws, Significant difference, Removal torque, Platform switching, reverse torque, Prosthesis Design, Torque, dental implants, mechanical cycling, Tukey's range test, Cycling, General Dentistry, Abutment (dentistry), Biomedical engineering, Abutment Screw
Abstract

Made available in DSpace on 2015-08-26T19:19:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-06-01. Added 1 bitstream(s) on 2015-08-31T13:04:53Z : No. of bitstreams: 1 S0103-64402015000300284.pdf: 361947 bytes, checksum: c507898e9e30a04f581c1934b7e0b57b (MD5) Este estudo in vitro avaliou o efeito da ciclagem mecânica no torque dos parafusos de retenção em implantes de hexágono externo com plataforma switching (PS), plataforma regular (RP) e plataforma larga (WP). Foram utilizados 30 corpos de prova divididos em 3 grupos equitativamente: PS, RP e WP. Cada corpo de prova foi preparado com implantes: 3,75x10 mm para o grupo RP e 5,0x10 mm para os grupos PS e WP, e seu respectivo abutment com o torque de 32 Ncm. Todos os grupos foram submetidos a 106 ciclos com 100 N de força (o que corresponde a aproximadamente 40 meses de mastigação). Os resultados foram obtidos com o torque reverso de cada espécime e os dados foram avaliados com ANOVA comparado com o teste de Tukey (p

Published
2015

12. Streptococcus mutans adhesion and releasing of metallic ions in dental alloys

Author

Ricardo Alexandre Zavanelli, Rosse Mary Falcón-Antenucci, José Vitor Quinelli Mazaro, Adriana Cristina Zavanelli, Universidade Estadual Paulista (Unesp), and Universidade Federal de Goiás (UFG)

Subjects
Alloy, chemistry.chemical_element, Dentistry, engineering.material, Corrosion, Metal, Aluminium, General Dentistry, Dental alloys, Ions, biology, business.industry, Biofilm, technology, industry, and agriculture, RK1-715, biology.organism_classification, Copper, Streptococcus mutans, chemistry, visual_art, engineering, visual_art.visual_art_medium, Amalgam (chemistry), business, Nuclear chemistry
Abstract

Made available in DSpace on 2015-08-26T19:19:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-03-01. Added 1 bitstream(s) on 2015-08-31T13:04:53Z : No. of bitstreams: 1 S1677-32252015000100036.pdf: 296689 bytes, checksum: b298faaa5461860ab4c974de9f60dfa4 (MD5) AIM: To evaluate the adherence of Streptococcus mutans to the surface of the amalgam and copper/aluminum alloy samples and also evaluate the release of metallic ions. METHODS: The prepared medium was changed every 72 h and analyzed by atomic absorption spectrophotometer. Samples were removed from the prepared medium at 15, 30, 48 and 60 days. RESULTS: The result shows that ions released were statistically different among all groups, and so were both biofilm and pits formation and the corrosion induced by the S. mutans in both types of samples. SEM observation of the samples immersed in the prepared medium with S. mutans showed adherence of microorganisms on the whole surface, in all groups. CONCLUSIONS: The S. mutans adhere to both amalgam and copper/aluminum alloy causing corrosion of those restorations. S. mutans produced a greater ions release in Cu/Al alloy; in amalgam, the ions release was not influenced by exposure to S. mutans. Universidade Federal de Goiás Dental School Department of Oral Rehabilitation Universidade Estadual Paulista Araçatuba Dental School Department of Dental Materials and Prosthodontics

Published
2015

13. Influence of diameter and intraradicular post in the stress distribution. Finite element analysis

Author

José Vitor Quinelli Mazaro, Cleidiel Aparecido Araujo Lemos, Victor Eduardo de Souza Batista, Eduardo Piza Pellizzer, Carol Cantieri Mello, Daniel Augusto de Faria Almeida, Fellippo Ramos Verri, Universidade Estadual Paulista (Unesp), and Universidade Federal de Alfenas Faculdade de Odontologia

Subjects
Materials science, Dental prosthesis, post and core technique, 0206 medical engineering, Glass fiber, lcsh:Medicine, 02 engineering and technology, Prótese dentária, técnica para retentor intrarradicular, Stress (mechanics), 03 medical and health sciences, 0302 clinical medicine, prótese parcial fixa, von Mises yield criterion, Composite material, Tension (physics), Significant difference, lcsh:R, 030206 dentistry, General Medicine, Stress distribution, denture partial fixed, 020601 biomedical engineering, Finite element method, lcsh:RK1-715, Coronal plane, lcsh:Dentistry
Abstract

Made available in DSpace on 2018-11-12T17:27:08Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-06-01. Added 1 bitstream(s) on 2018-11-12T17:35:04Z : No. of bitstreams: 1 S1807-25772016000300171.pdf: 1626128 bytes, checksum: 14d46e0cd593abaee84333e358a143c2 (MD5) ResumoIntrodução O comportamento biomecânico de dentes tratados endodonticamente é variável conforme o material restaurador selecionado e situação do dente a ser restaurado.Objetivo Analisar por meio do método dos elementos finitos bidimensional o comportamento biomecânico de diferentes retentores intrarradiculares e diâmetros em dentes com 2mm de remanescente coronário.Material e método Foram confeccionados seis modelos com três tipo de retentores: pino de fibra de vidro, pino de fibra de carbono e núcleo metálico fundido, ambos com diâmetro #1 (1,1mm de diâmetro) e #2 (1,3mm de diâmetro). A modelagem foi realizada através do programa Rhinoceros 4.0, e em seguida nos programas FEMAP 10.2 e NeiNastran 9.2 para desenvolvimento d os modelos de elementos finitos. Nos carregamentos foram utilizadas forças de 100N axial e oblíquo. Os resultados foram visualizados pelo mapa de tensão von Mises, e pela análise de variância (ANOVA) e pós-teste Tukey, com nível de significância à 5%.Resultado O carregamento oblíquo apresentou maiores valores de tensões (p

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