RESUMO
Uma das mais importantes questões da Odontologia atual é a preservação do esmalte dentário. Nesse contexto, os laminados cerâmicos apresentam excelente reprodução das propriedades ópticas da estrutura dental, especialmente em espessuras mínimas. Este artigo apresenta um caso clínico, esclarecendo indicação, vantagens, desvantagens e limitações das facetas cerâmicas. Concluiu-se que, atualmente, os laminados cerâmicos são a melhor opção de tratamento nos casos de estética elevada, uma vez que é uma reabilitação conservadora que imita fielmente a estrutura dental e sua forma (AU).
One of the most important issues of today's Dentistry is the preservation of sound enamel. In this context, ceramic veneers present excellent reproduction of the optical properties of the dental structure, especially in minimal thicknesses. The current article aims to present a case report, clarifying the indication, advantages, disadvantages, and limitations of laminate veneers. We concluded that the ceramic veneers are currently the best treatment option for elective aesthetic cases, once it is an extremely conservative rehabilitation that faithfully mimics the dental structure and shape, besides being a very predictable treatment (AU).
Assuntos
Pessoa de Meia-Idade , Cerâmica , Esmalte Dentário , Facetas Dentárias , Reabilitação Bucal , Sorriso , Brasil , Relatos de Casos , Cimentação/métodos , Prótese Dentária , Fotografia Dentária/instrumentação , Odontologia , Estética DentáriaRESUMO
O restabelecimento da dimensão vertical de oclusão (DVO) de pacientes é uma tarefa complexa e, em virtude disso, diversos métodos são empregados, rotineiramente, na busca do correto relacionamento maxilomandibular. Sempre que indicado, o aumento da DVO deve ser feito com próteses fixas para melhor adaptação do organismo à nova condição oclusal. O presente caso clínico descreve uma situação de acentuada perda de DVO, em um paciente parcialmente edentado, com desgastes dentais severos. Depois dessa dimensão ter sido recuperada por meio de coroas provisórias, sem que houvesse presença de alterações funcionais, próteses parciais fixas foram confeccionadas. A utilização de próteses fixas no caso em questão facilitou a obtenção de uma guia canina e guia anterior mais precisas, pelo grande número de elementos pilares. O resultado final deste caso clínico comprovou a efetividade de restabelecer adequadamente a DVO perdida, por meio da confecção de coroas provisórias e próteses fixas sem causar dores e/ou desconforto ao paciente.
Reestablishment of occlusal vertical dimension (OVD) is a complex task therefore different methods are used routinely in the search of proper maxillomandibular relation. When indicated, the increasing of VDO must be done with fixed prosthesis for a better adaptation of the organism to the new occlusal condition. The reported clinical case describes a situation of severe VDO loss in a partially edentulous patient with severe dental wear. After recovery of this position through temporary prosthesis, without any major functional changes, fixed partial dentures (fPD) were used. The use of fPD, in this case has enabled a more precise canine and anterior guidance due to a large number of abutments elements. final results have proved the effectiveness of the use of temporary prosthesis and fixed prostheses proper restoration of lost VDO, without pain and/or discomfort to the patient.
Assuntos
Humanos , Masculino , Idoso , Coroas , Prótese Parcial Fixa , Prótese Parcial Removível , Reabilitação Bucal , Dimensão VerticalRESUMO
UNLABELLED: Knowing how stresses are dissipated on the fixed implant-supported complex allows adequate treatment planning and better choice of the materials used for prosthesis fabrication. OBJECTIVES: The aim of this study was to evaluate the deformation suffered by cantilevered implant-supported fixed prostheses frameworks cast in silver-palladium alloy and coated with two occlusal veneering materials: acrylic resin or porcelain. MATERIAL AND METHODS: Two strain gauges were bonded to the inferior surface of the silver-palladium framework and two other were bonded to the occlusal surface of the prosthesis framework covered with ceramic and acrylic resin on each of its two halves. The framework was fixed to a metallic master model and a 35.2 N compression force was applied to the cantilever at 10, 15 and 20 mm from the most distal implant. The measurements of deformation by compression and tension were obtained. The statistical 2-way ANOVA test was used for individual analysis of the experiment variables and the Tukey test was used for the interrelation between all the variables (material and distance of force application). RESULTS: The results showed that both variables had influence on the studied factors (deformation by compression and tension). CONCLUSION: The ceramic coating provided greater rigidity to the assembly and therefore less distortion compared with the uncoated framework and with the resin-coated framework. The cantilever arm length also influenced the prosthesis rigidity, causing higher deformation the farther the load was applied from the last implant.
Assuntos
Resinas Acrílicas/química , Ligas Dentárias/química , Porcelana Dentária/química , Planejamento de Prótese Dentária , Prótese Dentária Fixada por Implante , Facetas Dentárias , Análise de Variância , Força Compressiva , Técnica de Fundição Odontológica , Análise do Estresse Dentário , Teste de Materiais , Paládio/química , Valores de Referência , Reprodutibilidade dos Testes , Prata/química , Propriedades de Superfície , Resistência à Tração , Fatores de TempoRESUMO
Knowing how stresses are dissipated on the fixed implant-supported complex allows adequate treatment planning and better choice of the materials used for prosthesis fabrication. Objectives: The aim of this study was to evaluate the deformation suffered by cantilevered implant-supported fixed prostheses frameworks cast in silver-palladium alloy and coated with two occlusal veneering materials: acrylic resin or porcelain. Material and Methods: Two strain gauges were bonded to the inferior surface of the silver-palladium framework and two other were bonded to the occlusal surface of the prosthesis framework covered with ceramic and acrylic resin on each of its two halves. The framework was fixed to a metallic master model and a 35.2 N compression force was applied to the cantilever at 10, 15 and 20 mm from the most distal implant. The measurements of deformation by compression and tension were obtained. The statistical 2-way ANOVA test was used for individual analysis of the experiment variables and the Tukey test was used for the interrelation between all the variables (material and distance of force application). Results: The results showed that both variables had influence on the studied factors (deformation by compression and tension). Conclusion: The ceramic coating provided greater rigidity to the assembly and therefore less distortion compared with the uncoated framework and with the resin-coated framework. The cantilever arm length also influenced the prosthesis rigidity, causing higher deformation the farther the load was applied from the last implant. .
