Fracture Initiation at the Zirconia/Veneer Interface-A Finite Element Simulation | Science Publications

American Journal of Engineering and Applied Sciences

M. M. Mirsayar¹  A. T. Samaei¹ 

关键词: Interface Crack;    Zirconia;    Veneer;    Fracture Initiation;    Finite Element;   

DOI  :  10.3844/ajeassp.2015.354.359

学科分类：工程和技术（综合）

来源: Science Publications

【 摘 要 】

Zirconia/veneerbilayered components are extensively used in dental restoration technology toimprove resistance of tooth’s surface from decay. The direction of the fracturepropagation at the interface of zirconia and veneer is investigated in this study.Finite element analysis is performed on a bi-material four point bend specimenin different geometries and the fracture initiation angle is obtained using MaximumTangential Stress (MTS) criterion. The effect of specimen geometry on thefracture initiation angle is discussed. Because an interface crack maypropagate through interface or kink into one of the materials, some commentsare given to determine under which condition “interface debonding” will be happened.

【 授权许可】

Unknown