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Updated: Jun 22, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
[The study of cyclic fatigue and lifetime for all-ceramic crown after cementation]
Hai-tao Xin1, Wei-guo Guo, Yu-long Li
1Department of Prosthodontics, College of Stomatology, The Fourth Military Medical University, Xi'an 710032, China. xhthmj@fmmu.edu.cn
Objective:
To study mechanical and cyclic fatigue behavior of IPS Empress2 under cyclic loading, and to establish guidelines for the use and design of all-ceramic crowns.
Methods:
A 3-D finit element method model of tooth and crown were established. The strength and lifetime of all-ceramic crowns under cyclic loading in centric occlusion were investigated using computational techniques of the Abaqus and MSC Fatigue software.
Results:
Most of the fatigue and fracture of all-ceramic crown occurred within the veneering material at cervical marginal of the crown. The number of loading cycles before failure occurred varied within specified limits 2,506,109-6,950,243. The lifetime of the crown decreased significantly as loading increased and decreased gradually as loading time increased as well.
Conclusions:
The mechanical and fatigue behavior of ceramic materials and restorations need to be improved before clinical use in order to guarantee clinical long-term success of all-ceramic crown. properly in order to increase the longevity of all-ceramic crowns.
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