不同核心瓷与饰面瓷厚度比对氧化锆双层瓷结构强度的影响.pdf

中国组织工程研究第 16 卷第 3 期 2012– 01– 15 出版
Chinese Journal of Tissue Engineering Research January 15, 2012 ,

不同核心瓷与饰面瓷厚度比对氧化锆双层瓷结构强度的影响* ★
施海兰,胡书海,张磊,任翔,左恩俊
Different thickness ratios of core to veneer influence the flexural strength of bilayered zirconia
ceramic
Shi Hai-lan, Hu Shu-hai, Zhang Lei, Ren Xiang, Zuo En-jun
Abstract
BACKGROUND: Zirconia ceramic has superior strength and toughness to traditional feldspar porcelain and alumina ceramic; College of
however, the flexural strength relates to the thickness ratio of core to veneer. Stomatology, Dalian
OBJECTIVE: To evaluate the effect of different core: veneer thickness ratios to veneer on the flexural strength and failure mode Medical University,
Dalian 116044,
of bilayered dental ceramic sheet specimens. Liaoning Province,
METHODS: Zirconia ceramic blocks (15 mm× mm) after sintering were cut into 30 sheets with low speed saw according to the China
following thickness: mm, mm, mm, mm, mm and mm. After veneering porcelain was fired, all bilayered
★
ceramic sheets and simple zirconia sheets had same specimen thickness of mm and equally divided into six groups of five Shi Hai-lan ,
Studying for master’s
each according to core: veneer thickness ratio: A group (1:3), B group (2:3), C group (1:1), D group (3:2), E group (3:1) and F degree, Physician,
gro