Comput Methods Programs Biomed - 2D and 3D finite element analysis of central incisor generated by computerized tomography.

Tópicos

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Resumo

The purpose of this study was to compare the results of different hierarchical models in engineering analysis applied to dentistry with 2D and 3D models of a tooth and its supporting structures under 100 N occlusal loading at 45? and examine the reliability of simplified 2D models in dental research. Five models were built from computed-tomography scans: four 2D models with Plane Strain and Plane Stress State with linear triangular and quadratic quadrilateral elements and one 3D model. The finite element results indicated that the stress distribution was similar qualitatively in all models but the stress magnitude was quite different. It was concluded that 2D models are acceptable when investigating the biomechanical behavior of upper central incisor qualitatively. However, quantitative stress analysis is less reliable in 2D-finite element analysis, because 2D models overestimate the results and do not represent the complex anatomical configuration of dental structures. Therefore 3D finite element analyses of dental biomechanics cannot be simplified.

Resumo Limpo

purpos studi compar result differ hierarch model engin analysi appli dentistri d d model tooth support structur n occlus load examin reliabl simplifi d model dental research five model built computedtomographi scan four d model plane strain plane stress state linear triangular quadrat quadrilater element one d model finit element result indic stress distribut similar qualit model stress magnitud quit differ conclud d model accept investig biomechan behavior upper central incisor qualit howev quantit stress analysi less reliabl dfinit element analysi d model overestim result repres complex anatom configur dental structur therefor d finit element analys dental biomechan simplifi

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