无机材料学报

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可切削的氧化锆陶瓷牙科修复体的制备

荣天君1; 赵云凤2; 王士维1; 张玉峰1; 黄校先1; 郭景坤1   

  1. 1. 中国科学院上海硅酸盐研究所, 上海 200050; 2. 四川大学口腔医学院成都 610041
  • 收稿日期:2002-02-08 修回日期:2002-04-26 出版日期:2003-03-20 网络出版日期:2003-03-20

Preparation of Machinable Zirconia Ceramics as a Dental Prosthetic Material

RONG Tian-Jun1; ZHAO Yun-Feng2; WANG Shi-Wei1; ZHANG Yu-Feng1; HUNAG Xiao-Xian1; GUO Jing-Kun1   

  1. 1.Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China; 2.Stomatological college; Sichuan University; Chengdu 610041; China
  • Received:2002-02-08 Revised:2002-04-26 Published:2003-03-20 Online:2003-03-20

摘要: 通过控制CaO_2-Al_2O_3-SiO_2硅酸盐玻璃粉体,在1300℃低温下液相烧结获得热膨胀系数在7.19×10 -6/℃和8.15×10-6/℃范围内,与修复体饰瓷相近,其强度在340~360MPa,韧性在2.7~3.5 MPa·mI/2,可切削性与In-Ceram相当的氧化锆陶瓷牙科修复体.

关键词: 氧化锆陶瓷, 牙科修复体, 可切削, 制备

Abstract: The zirconia ceramic as a dental prosthetic material was prepared by liquid-phase sintering with CaO2-Al2O3
-SiO2 glass as the sintering aid. And the bending strength, fracture toughness, thermal expansion and machinable property of the sintered bodies
were valued. The results obtained show that (1) CaO2-Al2O3-SiO2 glass is effective to lower the sintering temperature of zirconia ceramic
to 1300℃; (2) the machinability of the dental prosthetic zirconia ceramic is comparable to that of In-Ceram; (3) its thermal expansion coefficient is 8.15~
7.19×10-6/℃, bending strength is 360~340MPa and fracture toughness is 3.5~2.7MPa·m1/2.

Key words: zirconia ceramics, machinable, dental prosthetic material, preparation

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