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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

Background Considering the limited qualitative and quantitative bone in the posterior arch, this modality of prosthetic treatment could provide a positive emotional factor reestablished by immovability of the anterior fixed implant-supported segment. Objective This clinical report demonstrates the possibility of achieving positive results with a removable partial denture connected to an implant-supported fixed prosthesis associated to an extra resilient attachment. Clinical significance In cases of posterior mandibular and maxilla atrophy added to the patients desire against the bone graft, this kind of prosthetic treatment has an important place as an alternative. How to cite this article Zavanelli RA, Mazaro JVQ, Guilherme AS, Magalhães JB, de Carvalho Cardoso L, Zavanelli AC. Distal Extension Removable Partial Denture with Resilient Attachment Connected to an Anterior Fixed Implant-Supported Prosthesis: A Clinical Report. World J Dent 2012;3(1):87-90.

The purposes of this study were to photoelastically measure the biomechanical behavior of 4 implants retaining different cantilevered bar mandibular overdenture designs and to compare a fixed partial denture (FPD). A photoelastic model of a human edentulous mandible was fabricated, which contained 4 screw-type implants (3.75 × 10 mm) embedded in the parasymphyseal area. An FPD and 3 overdenture designs with the following attachments were evaluated: 3 plastic Hader clips, 1 Hader clip with 2 posterior resilient cap attachments, and 3 ball/O-ring attachments. Vertical occlusal forces of 100 N were applied between the central incisor and unilaterally to the right and left second premolars and second molars. Stresses that developed in the supporting structure were monitored photoelastically and recorded photographically. The results showed that the anterior loading, the overdenture with 3 plastic Hader clips, displayed the largest stress concentration at the medium implant. With premolar loading, the FPD and overdenture with 3 plastic Hader clips displayed the highest stresses to the ipsilateral terminal implant. With molar loading, the overdenture with 3 ball/O-ring attachments displayed the most uniform stress distribution in the posterior edentulous ridge, with less overloading in the terminal implant. It was concluded that vertical forces applied to the bar-clip overdenture and FPD created immediate stress patterns of greater magnitude and concentration on the ipsilateral implants, whereas the ball/O-ring attachments transferred minimal stress to the implants. The increased cantilever in the FPD caused the highest stresses to the terminal implant.

Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:25:27Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:31:05Z : No. of bitstreams: 1 2-s2.0-84856146636.pdf: 130646 bytes, checksum: bcdd2936589383071798ebdf33b19692 (MD5) Made available in DSpace on 2014-05-27T11:25:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-01-01 The development of all-ceramic systems following metalceramics restorations allowed simulation of natural dentition due to favorable esthetics and resistance. In-Ceram is an alternative when esthetics is primordial as well as resistance required in rehabilitation. However, an ideal smile is associated to not only shape, color, texture and translucency but also harmony with gingival tissue. So, the aim of this study is to report a clinical case based on periodontal and fixed partial dentures principles to perform periodontal plastic surgery followed by esthetic rehabilitation. A female patient, 40-year-old, presented complaint about dental esthetics. After clinical and radiographic exams, metal-ceramics crowns (teeth 11, 12, 13, 21, 22 and 23) were considered unsatisfactory due to marginal leakage, color change in gingival tissue associated to metallic margin, and gummy smile. So, a crown lengthening surgery of anterior teeth was performed followed by rehabilitation of superior teeth with In-Ceram single crowns. Clinical significance: The interaction between periodontics and fixed prosthodontic area is the key of an adequated treatment planning which involves gingival smile to provide function and an esthetic condition in association with an esthetic, resistant and predictable material. Department of Dental Materials and Prosthodontics FOA-UNESP, São Paulo Department of Restorative Dentistry FOA-UNESP, São Paulo , Avenida Dep. Jamel Cecilio, 2496, Jardim Goias 74810-100, Goiânia-Goiás-Brazil Department of Dental Materials and Prosthodontics FOA-UNESP, São Paulo Department of Restorative Dentistry FOA-UNESP, São Paulo

Aim The aim of this study is to present a clinical case in which an occlusal matrix device was used in a patient who needed to restore a posterior tooth. Material and methods A direct duplicate occlusal appliance was used (biteperf) in a patient who needed an occlusal restoration in two posterior teeth. Results Using the matrix helps having fast and accurate reproduction of the original anatomical details of the occlusal surface. The final result surprised with the presented restoration in terms of esthetic quality, despite the simplicity of the technique. Conclusion Posterior teeth with initial lesions were confined to the occlusal surface of anatomically complex or fissured anatomy with or without signs of proximal caries wich are ideal candidates for this technique. The overlying enamel surface must be relatively intact; lesions of hidden or occult caries. Clinical significance The aesthetic and time-saving benefits of the occlusal device (biteperf) are immediately clear. The matrix allows the fast and accurate reproduction of the anatomic details of the original occlusal surface of the tooth. The professionals who lack an artistic penchant and marked manual ability will be able to carry out excellent posterior resin composite restorations. How to cite this article de Carvalho Dekon SF, Pereira LV, Zavanelli AC, Goiato MC, do Amparo Resende C, dos Santos DM. An Effective Technique to Posterior Resin Composite Restorations. J Contemp Dent Pract 2011;12(6):506-510.

Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:25:52Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:31:10Z : No. of bitstreams: 1 2-s2.0-84856147754.pdf: 110326 bytes, checksum: 9bfcf993554e5c8f4628b58b78ebc5f8 (MD5) Made available in DSpace on 2014-05-27T11:25:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-05-01 Aim: There is little information considering the framework association between cast clasps and attachments. The aim of this study was to evaluate the retention strength of frameworks match circumferential clasps and extra resilient attachment cast in three different alloys (cobalt-chromium, nickel-chromium titanium and commercially pure titanium), using two undercut (0.25 and 0.75 mm) and considering different period of time (0, 1/2, 1, 2, 3, 4 and 5 years). Methods: Using two metallic matrices, representing a partially edentulous mandibular right hemiarch with the first molar crown, canine root and without premolars, 60 frameworks were fabricated. Three groups (n = 20) of each metal were cast and each group was divided into two subgroups (n = 10), corresponding the molar undercut of 0.25 mm and 0.75 mm. The nylon male was positioned at the matrix and attached to the acrylic resin of the prosthetic base. The samples were subjected to an insertion and removal test under artificial saliva environment. Results: The data were analyzed and compared with ANOVAs and Tukey's test at 95% of probability. The groups cast in cobaltchromium and nickel-chromium-titanium had the highest mean retention strength (5.58 N and 6.36 N respectively) without significant difference between them, but statistically different from the group cast in commercially pure titanium, which had the lowest mean retention strength in all the periods (3.46 N). The association frameworks using nickel-chromium-titanium and cobalt-chromium could be used with 0.25 mm and 0.75 mm of undercut, but the titanium samples seems to decrease the retention strength, mainly in the 0.75 mm undercut. The circumferential clasps cast in commercially pure titanium used in 0.75 mm undercuts have a potential risk of fractures, especially after the 2nd year of use. Conclusion: This in vitro study showed that the framework association between cast clasp and an extra resilient attachment are suitable to the three metals evaluated, but strongly suggest extra care with commercially pure titanium in undercut of 0.75 mm. Clinical significance: Frameworks fabricated in Cp Ti tend to decrease in retentive strength over time and have a potential risk of fracture in less than 0.75 mm of undercut. Department of Prevention and Oral Rehabilitation FO-UFG, Goiás Department of Prosthodontics NYUCD, New York Department of Biomaterial and Biomimetics NYUCD, New York Department of Dental Materials and Prosthodontics FOA-UNESP, São Paulo Department of Dental Materials and Prosthodontics FORP-USP, São Paulo Department of Dental Materials and Prosthodontics FOA-UNESP, São Paulo

During the process of facial rehabilitation, the mobility of ocular prostheses must be considered. Whereas some factors depend exclusively on the dentist, such as molding techniques and selection of material for denture construction, regarding ocular rehabilitation, factors, such as type of surgery, whether to adopt implants, and the use of lubricants, deserve special attention owing to their integration and their association with other factors pertaining exclusively to the patient. To establish harmony, and with the intention of aiding the dentist, after a discerning evaluation, the authors of this study report the factors that provide greater or less mobility to ocular prostheses and conceal the prosthesis in a more natural way, thereby contributing toward achieving a favorable aesthetic result in rehabilitations.

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

Purpose: The purpose of this study was to evaluate the color stability of two silicones for use in facial prostheses, under the influence of chemical disinfection and storage time. Materials and Methods: Twenty-eight specimens were obtained half made from Silastic MDX 4-4210 silicone and the other half from Silastic 732 RTV silicone. The specimens were divided into four groups: Silastic 732 RTV and MDX 4-4210 with disinfection three times a week with Efferdent and Sliastic 732 RTV and MDX 4-4210 disinfected with neutral soap. Color stability was analyzed by spectrophotometry, immediately and 2 months after making the specimens. After obtaining the results, ANOVA and Tukey test with 1% reliability were used for statistical analysis. Results: Statistical differences between mean color values were observed. Disinfection with Efferdent did not statistically influence the mean color values. Conclusion: The factors of storage time and disinfection statistically influenced color stability; disinfection acts as a bleaching agent in silicone materials.

Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:25:30Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:41:42Z : No. of bitstreams: 1 2-s2.0-84856084328.pdf: 84111 bytes, checksum: ae106103cdcbb3700fcf9a699a368961 (MD5) Made available in DSpace on 2014-05-27T11:25:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-03-01 Objectives: The maintenance and stability of peri-implantar soft tissue seem to be related to the crestal bone around the implant platform and different implant designs connections might affect this phenomenon. The aim of this study was to evaluate by photoelastic analysis the stress distribution in the cervical and apical site of implant-abutment interface of conventional implant joints (external hex, internal hex and cone morse) and compare to the novel platform switching design. Materials and methods: It was fabricated photoelastic models using five different implant-abutment connection, one set of external hex (Alvim Ti, Neodent, Curitiba, Brazil), one set of internal hex (Full Osseotite, Biomet 3i, Florida, USA), one cone morse set (Alvim CM, Neodent, Curitiba, Brazil), and two sets of internal hex plus platform switching concept (Alvim II Plus, Neodent, Curitiba, Brazil) (Certain Prevail, Biomet 3i, Florida, USA). These models were submitted to two compressive loads, axial from 20 kgf (load I) and another (load II), inclined 45° from 10 kgf. During the qualitative analysis, digital pictures were taken from a polariscope, for each load situation. For the quantitative analyses in both situations of load, the medium, minimum and maximum in MPa values of shear strain were determined in the cervical and apical site. The Kruskal-Wallis test was used to compare the results between the different systems and between cervical and apical site were compared using Mann-Whitney U test. Results: The results from qualitative analysis showed less concentration of strain in the cervical area to the internal hex plus platform switching (Certain Prevail), in both situation of load. The same results were get in the quantitative analysis, showing less stress concentrations around the implant Certain Prevail with internal hex plus the novel design (17.9 MPa to load I and 29.5 MPa to load II), however, without statistical significant difference between the systems. Conclusion: The minor stress concentration strongly suggest the use of platform switching design as a manner to prevent bone loss around the implant-abutment platform. Clinical Significance: From the result of this study its possible to make clinical decision for implant system which provides implant components with platform switching characteristics. Department of Prevention and Oral Rehabilitation FO-UFG, Goiás Department of Dental Materials and Prosthodontics FOA-UNESP, São Paulo Department of Prevention and Oral Rehabilitation, Avenida Dep. Jamel Cecilio, 2496, Jardim Goiás 74810-100, Goiânia-Goiás Department of Dental Materials and Prosthodontics FOA-UNESP, São Paulo

The purpose of this study was to compare the dental movement that occurs during the processing of maxillary complete dentures with 3 different base thicknesses, using 2 investment methods, and microwave polymerization.A sample of 42 denture models was randomly divided into 6 groups (n = 7), with base thicknesses of 1.25, 2.50, and 3.75 mm and gypsum or silicone flask investment. Points were demarcated on the distal surface of the second molars and on the back of the gypsum cast at the alveolar ridge level to allow linear and angular measurement using AutoCAD software. The data were subjected to analysis of variance with double factor, Tukey test and Fisher (post hoc).Angular analysis of the varying methods and their interactions generated a statistical difference (P = 0.023) when the magnitudes of molar inclination were compared. Tooth movement was greater for thin-based prostheses, 1.25 mm (-0.234), versus thick 3.75 mm (0.2395), with antagonistic behavior. Prosthesis investment with silicone (0.053) showed greater vertical change compared with the gypsum investment (0.032). There was a difference between the point of analysis, demonstrating that the changes were not symmetric.All groups evaluated showed change in the position of artificial teeth after processing. The complete denture with a thin base (1.25 mm) and silicone investment showed the worst results, whereas intermediate thickness (2.50 mm) was demonstrated to be ideal for the denture base.

The record of electrical activity of elevator muscles in mandible is important for the evaluation of muscular potency and diagnosis of neuromuscular pathologies, which allows prevention and treatment. The aim of this study was to define silent periods (SPs) and the importance in dentistry and compare the SPs in masticatory muscles of dentate and edentulous patients wearing prosthesis considering the presence or absence of craniomandibular dysfunction (CMD).Literature review in PubMed database.Silent periods are isolated pulses of transcranial magnetic stimulation in the primary motor cortex during voluntary muscular activity that generates an interruption of muscular activity for hundredths of milliseconds. The SP duration depends on the patient (dentate or edentulous), type of stimulus, and presence of CMD.The SP is higher in complete edentulous patients and in individuals with occlusal disharmonies than in dentate patients without CMDs. The treatment of CMDs through occlusal therapy decreases SP duration.

Made available in DSpace on 2014-10-01T13:08:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-12-01Bitstream added on 2014-10-01T14:02:59Z : No. of bitstreams: 1 S0103-166X2013000400008.pdf: 260063 bytes, checksum: c0c49b3c3fdf92585fa89e3f69183627 (MD5) Este artigo apresenta os resultados de uma pesquisa qualitativa aplicada a alunos e profissionais de Odontologia que trabalham com pessoas que sofrem de disfunção temporomandibular. Objetivou-se investigar a forma como os profissionais e acadêmicos de Odontologia percebem seus pacientes acometidos por essa disfunção, seus sentimentos diante do sofrimento dos mesmos e a importância de uma abordagem multidisciplinar, pontuando quais os tratamentos utilizados. Vale ressaltar que, na problemática da disfunção temporomandibular, estão envolvidos vários fatores, dentre eles o emocional, citado pela maioria dos entrevistados. Os dados obtidos em relação ao conhecimento dos profissionais e alunos quanto ao atendimento do paciente com disfunção temporomandibular foi considerado adequado; entretanto, mostraram inadequações importantes, como o fato de os profissionais não investigarem melhor o histórico de vida do paciente em seu aspecto psicossocial. This paper presents the results of an applied qualitative study with dental students and professionals who work with people suffering from temporomandibular disorder. The aim was to investigate the way that dental practitioners and students perceive patients affected by this disorder, how they feel faced with the patients' suffering, and the importance they assign to a multidisciplinary approach, highlighting the treatments used. It is noteworthy that various factors are involved in the temporomandibular disorder framework, including emotional factors, as cited by the majority of the respondents. The data obtained indicated that the knowledge of the professionals and students related to caring for people with temporomandibular disorders was appropriate, however, important inadequacies were highlighted, such as the fact that professionals do not investigate the life history of the person in their psychosocial context. Universidade Estadual Paulista Júlio de Mesquita Filho Faculdade de Odontologia de Araçatuba Departamento de Materiais Odontológicos e Prótese Universidade Estadual Paulista Júlio de Mesquita Filho Faculdade de Odontologia de Araçatuba Centro de Promoção da Qualidade de Vida Universidade Estadual Paulista Júlio de Mesquita Filho Faculdade de Odontologia de Araçatuba Departamento de Materiais Odontológicos e Prótese Universidade Estadual Paulista Júlio de Mesquita Filho Faculdade de Odontologia de Araçatuba Centro de Promoção da Qualidade de Vida