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Updated: Jul 13, 2026
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
[Compared study of cyclic fatigue behaviors in two kinds of dental ceramic layers structures]
Jian-Sheng Su1, Ling-Yun Guo, Wei-cai Liu
1Dept. of Prosthodontics, Oral Hospital of Tongdi University, Shanghai.
Objective:
To compare the difference in strength degradation and morphology damage of two dental ceramic materials after Hertzian contact cyclic fatigue.
Methods:
Hertzian contact technique was used to investigate the response of Empress II glass ceramic and GI- II glass-infiltrated alumina ceramic to cyclic fatigue. Critical loads of specimens after different fatigue cycles were recorded.
Results:
For Empress II glass ceramic, critical load had significantly difference between specimens after 10(5) cycles loading. No significant difference of critical load was found in GI- II glass-infiltrated alumina ceramic after cycles loading.
Conclusion:
GI- II glass-infiltrated alumina ceramic has better capability in resistance to cyclic loading. It may attribute to microstructure of material. Empress II glass ceramic shows a brittle damage model.
