Comparison of wear resistance of three kinds of glass ceramics and Wieland Zenostar zircona
- VernacularTitle:3种玻璃陶瓷与Wieland Zenostar氧化锆相互摩擦的耐磨性比较
- Author:
Yuanyuan ZHOU
1
;
Yaping ZHU
;
Jiaojiao QIN
;
Yiran LI
;
Qingcui WU
;
Chengkun WANG
;
Shan JIAO
Author Information
1. 吉林大学口腔医院牙体牙髓科
- Keywords:
glass ceramic;
zirconia;
friction and wear;
wear depth
- From:
Journal of Jilin University(Medicine Edition)
2019;45(1):83-87
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the differences of wear resistance of three kinds of glass ceramics and Wieland Zenostar zircona (Zenostar) , and to clarify their influencing factors.Methods:Zenostar were made into flat-shaped specimens (zirconia base sample group) and hemisphere-shaped specimens (zirconia pair grinding group) .There kinds of glass ceramics IPS Empress (Empress) , IPS e.max CAD (e.max) , VITA Suprinity (Suprinty) were used as base specimens.Each group was exposed to UMT-2testing machine to simulate the clinical service.The wear depthes of base specimens were detected by laser confocal scanning.Scanning electron microscope (SEM) was used to evaluate the wear surfaces.Results:In zirconia base sample group, there were no significant differences in the maximum wear depthes to Zenostar between the three kinds of glass ceramics (P＞0.05) .In zirconia pair grinding group, the maximum wear depthes ranked as follows:Zenostar group＜e.max group≈Empress group＜Suprinity group;there was no significant difference between e.max group and Empress group (P＞0.05) , but there were significant differences between other groups (P＜0.01) .The SEM results showed that the wearing surface of the Zenostar in zirconia base sample group was relatively smooth;whereas the wearing surface of Empress in zirconia pair grinding group was rougher with alarge area of clebris desquamation surface.Conclusion:The wear resistance of the three kinds of glass ceramics to Zenostar is related to the compositions and the chemical structures of materials.
