Stress analysis of two methods of ceramic inlay preparation by finite element

Pishevar, Leila; Ghavam, M; Pishevar, Ahmadreza

doi:10.4103/0970-9290.138339

Cited by 5 publications

(7 citation statements)

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“…In Dentistry, the technique began to be studied in the 1970s 1 . The methodology has great versatility and analyzes the stresses produced in numerical models; it can be applied in research fields such as implantology 2 , orthodontics 3 , it can also simulate thermal 4 mechanical cycling 5 , water sorption 6 and polymerization shrinkage 7 and can also be applied in cavity optimization 8 and cusp bending 9 studies.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and validation of a 3D premolar for finite element analysis

Durand

Guimarães

Monteiro

2016

Rev. odontol. UNESP

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ResumoIntrodução: O desenvolvimento e validação de modelos matemáticos é uma importante etapa da metodologia de estudos de elementos finitos. Objetivo: Este estudo tem o objetivo descrever o desenvolvimento e validação de um modelo numérico tridimensional de um pré-molar superior para análise em elementos finitos. Material e método: Fotografias padronizadas de cortes sequenciais de um pré-molar hígido serviram de referência para o desenvolvimento do modelo 3D, que foi construído por meio do programa SolidWorks (Dassault, França). A fim de validar o modelo testes de compressão e simulação numérica foram realizados. Os gráficos de carga versus deslocamento de ambos os ensaios foram comparados visualmente, a percentagem de erro calculada e homogeneidade dos coeficientes de regressão testada. Resultado: Um modelo 3D preciso foi desenvolvido e validado, uma vez que os gráficos apresentavam-se visualmente semelhantes, o percentual de erro ficou dentro dos limites aceitáveis e as retas foram consideradas paralelas. Conclusão: Os procedimentos de modelagem e validação descritos permitem o desenvolvimento de modelos dentários 3D precisos com comportamento biomecânico semelhante aos dentes naturais. Os métodos podem ser aplicados no desenvolvimento e validação de novos modelos e estudos de simulações computacionais por meio do MEF.Descritores: Simulação por computador; estudos de validação; análise de elementos finitos. AbstractIntroduction: The development and validation of mathematical models is an important step of the methodology of finite element studies. Objective: This study aims to describe the development and validation of a three-dimensional numerical model of a maxillary premolar for finite element analysis. Material and method: The 3D model was based on standardized photographs of sequential slices of an intact premolar and generated with the use of SolidWorks Software (Dassault, France). In order to validate the model, compression and numerical tests were performed. The load versus displacement graphs of both tests were visually compared, the percentage of error calculated and homogeneity of regression coefficients tested. Result: An accurate 3D model was developed and validated since the graphs were visually similar, the percentage error was within acceptable limits, and the straight lines were considered parallel. Conclusion: The modeling procedures and validation described allows the development of accurate 3D dental models with biomechanical behavior similar to natural teeth. The methods may be applied in development and validation of new models and computer-aided simulations using FEM.

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Section: Introductionmentioning

confidence: 99%

“…2016 Jan-Feb; 45(1): 21-26 22 stress distribution in inaccessible areas 7 . It costs less than laboratory studies and it overcomes the ethical issues surrounding the use and collection of extracted teeth for research 10 .…”

Section: Introductionmentioning

confidence: 99%

Modeling and validation of a 3D premolar for finite element analysis

Durand

Guimarães

Monteiro

2016

Rev. odontol. UNESP

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“…Stress concentrations at this thin ceramic margin have been associated with formation of microcracks in ceramic restorations. 30,31 This study found residual shrinkage stress concentrations in the margins of the ceramic restoration, which may add an additional challenge to this vulnerable area. Avoiding or reducing shrinkage stresses at the margins could therefore increase the longevity of ceramic restorations.…”

Section: Discussionmentioning

confidence: 80%

“…This may explain the relatively high percentage of postoperative sensitivity (13.3%) observed with dual cure conventional resin cement. 31 Although postoperative sensitivity tends to reduce with time, it is an undesirable incident. 35,36 Our study shows that delaying photo-activation may reduce shrinkage stresses at the pulpal floor and thus can reduce the incidence of postoperative sensitivity.…”

Section: Discussionmentioning

confidence: 99%

Delayed Photo-activation Effects on Mechanical Properties of Dual Cured Resin Cements and Finite Element Analysis of Shrinkage Stresses in Teeth Restored With Ceramic Inlays

Soares

Bicalho

Veríssimo

et al. 2016

Operative Dentistry

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“…5,20,21 Yeni nesil adeziv uygulamalardaki teknolojik ilerlemelerle beraber güçlendirilmiş seramiklerin geliştirilme-siyle, inley restorasyonların yapımında da kullanımları artmıştır. 22 Seramik inleyler, diş yapısının korunması ve daha fazla koronal doku bırakılması açısından konservatif uygulamalardır ve indirekt posterior rezin kompozitlerden fiziksel anlamda daha üstündürler.…”

Section: -13unclassified