Comprehensive Evaluation of Machinabilities of Dental Ceramics
Machinability of ceramics is a comprehensive behavior resulting from the interactions of several factors.In this paper,the fuzzy comprehensive evaluation system was applied to establish a model for machinabilities of several dental ceramics,including zirconia,empress feldspar,empress toughening leucite and lithium disilicate glass.The hardness (Hv),fracture toughness (KIC) and elastic modulus (E) of ceramic samples were used in evaluation model with different weighted indexes.The ceramics could be thus divided into 4 groups ofeasiest easy difficult and most difficult ,based on evaluated results.Lithium disilicate glass belongs to easiest ,empress feldspar and empress toughening leucite are at the easy level,and zirconia is difficult to be machined compared with other counterparts.The evaluations by established model are well supported by the practical machining experiments while these dental ceramics being undergone cutting.This implies that the derived evaluation model is an easy and simple way to estimate machinability of dental ceramics.
Machinability Dental Ceramics Fuzzy Comprehensive Evaluation
Cheng Zhang Ji LU Hui Huang
School of Materials Science and Engineering, Shanghai Institute of Technology, China School of Materials Science and Engineering, Shanghai Institute of Technology, China;Shanghai Ocean Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, China
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
69-71
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）