Compared study of cyclic fatigue behaviors in two kinds of dental ceramic layers structures.
- Author:
Jian-sheng SU
1
;
Ling-yun GUO
;
Wei-cai LIU
Author Information
- Publication Type:Journal Article
- MeSH: Aluminum Oxide; Aluminum Silicates; Ceramics; Dental Porcelain; Glass; Humans; Materials Testing
- From: West China Journal of Stomatology 2007;25(2):166-172
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo compare the difference in strength degradation and morphology damage of two dental ceramic materials after Hertzian contact cyclic fatigue.
METHODSHertzian 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.
RESULTSFor 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.
CONCLUSIONGI- 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.
