全部陶材冠の3次元有限要素法を用いた応力解析

境界の連続性を考慮した解析

抄録

The purpose of this study was to investigate the stress distribution of porcelain crowns in function, using three dimensional finite element method (3 D FEM) analysis.
Conventionally, it was regarded the complex crown-cement-abutment as a continuum unit in 3 D FEM analysis. However, these analyses were not applicable to fracture aspects in the actual situation. Therefore, in this study, analysis was carried out under the condition that the complex crown-cement-abutment was regarded as a non-continuum unit in 3 D FEM analysis.
The results were as follows:
1. As for the complex crown-cement-abutment as a non-continuum unit, 3 D FEM analysis of porcelain crowns showed better results than conventional method.
2. Distribution of high tensile stress was localized in the convex portion of the cervical proximal inner line of crowns.