Failure Behavior Numerical Test of Empress All-Ceramic Crowns

摘要

All-ceramic crown restorations are more widely used, however the brittleness of ceramics and stress mismatch of porcelain interlaminar often leads to damage of all-ceramic crown, and damage mechanism is not very clear. In this paper, a two dimensional model of Empress all-ceramic crowns is constructed using the RFPA (realistic failure process analysis) system to simulate the fracture process and analysis the fracture mechanism. The most advantage of this system is that the crack initiation, propagation and failure process of all-ceramic crown can be clearly observed and the research results provide guidance for clinical application.