中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (25): 4649-4652.doi: 10.3969/j.issn.1673-8225.2010.25.022

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

GGW钛粘结实验瓷的热学性能测试

王晓洁1，郭天文2，张玉梅2   

  1. 1解放军第458医院口腔科，广东省广州市  510602；2解放军第四军医大学口腔医学院修复科，陕西省西安市  710032
  • 出版日期:2010-06-18 发布日期:2010-06-18
  • 作者简介:王晓洁☆，女，1971年生，安徽省阜阳市人，2005年解放军第四军医大学口腔医学院毕业，博士，副主任医师，主要从事口腔修复工作。 xwwangxiaojie@126.com
  • 基金资助:

    国家自然科学基金的资助(30371557)。

Thermal properties test of GGW titanium bonding porcelain

Wang Xiao-jie1, Guo Tian-wen2, Zhang Yu-mei2   

  1. 1 Department of Stomatology, the 458 Hospital of Chinese PLA, Guangzhou   510602, Guangdong Province, China; 2 Department of Prosthodontics, Medical College of Stomatology, the Fourth Military Medical University of Chinese PLA, Xi'an   710032, Shaanxi Province, China
  • Online:2010-06-18 Published:2010-06-18
  • About author:Wang Xiao-jie☆, Doctor, Associate chief physician, Department of Stomatology, the 458 Hospital of Chinese PLA, Guangzhou 510602, Guangdong Province, China xwwangxiaojie@126.com
  • Supported by:

    the Natural Science Foundation of China, No. 30371557*

PDF

333

被引次数

3

摘要：

背景：贵金属昂贵的价格与镍铬合金生物安全性的担忧，纯钛烤瓷冠受到关注。但制作成本较高和钛瓷结合强度薄弱使纯钛烤瓷的使用受到限制，本课题旨在钛瓷粉国产化，降低纯钛烤瓷的成本，取代镍铬合金烤瓷修复，提高固定修复体的安全性。
目的：研制钛专用粘结瓷粉，并测试其热学性能指标。 
方法：根据钛粘结瓷的基本要求，综合粘结瓷的膨胀系数、黏度、力学性能、化学稳定性和粘结瓷对钛金属润湿性的考虑，初步设计粘结瓷的基本成分组成，经过大量的反复筛选实验，最终确定粘结瓷的配方构成，制备出GGW钛粘结瓷。对GGW钛粘结瓷进行示差扫描量热法分析和热膨胀系数的测定，确定GGW粘结瓷的玻璃化温度，与铸造纯钛热力学匹配关系。
结果与结论：GGW粘结瓷的示差扫描量热法显示在650 ℃左右，晶体开始从非晶态基体中析出，表明GGW钛粘结瓷烧结温度在800 ℃以下。玻璃化温度(537 ℃)时， GGW粘结瓷的膨胀系数为8.29×10-6/℃，铸造纯钛的膨胀系数为8.42×  10-6/℃，两者只相差0.13×10-6/℃，两者有着良好的热力学匹配关系，GGW粘结瓷已达到钛粘结瓷的基本要求。

关键词: 烧结温度, GGW钛粘结瓷, 热膨胀系数, 示差扫描量热法, 口腔生物材料

Abstract:

BACKGROUND: Due to the high cost of precious metals and biological safety of nickel-chromium alloy, titanium porcelain crown attracts attention. However, high production costs and weak bonding strength of titanium limit the use of titanium porcelain. This study aims to produce domestic titanium porcelain powder, reduce the cost of titanium porcelain, replace nickel-chromium alloy porcelain repair, and improve security of fixed dental prosthetics.
OBJECTIVE: To develop a kind of new titanium-bonding-porcelain powder and to test its thermal property.
METHODS: According to the basic requirement of titanium bonding porcelain, based on the expansion coefficient, viscosity, mechanical property and chemical stability of bonding porcelain, as well as influence of bonding porcelain on the wet ability of titanium, the major components of the titanium-bonding-porcelain were selected. The GGW experimental titanium-bonding-porcelain was made after repeated tests. The GGW titanium-bonding-porcelain was analyzed using differential scanning calorimetry and thermal expansion coefficients were determined, the glass transition temperature of GGW bonding-porcelain was also defined, as well as the matching correlation with casting titanium thermodynamics.
RESULTS AND CONCLUSION: Differential scanning calorimetry showed that when GGW bonding-porcelain was about 650 ℃, crystal began to educe from the amorphous matrix, indicating the tentative sintering temperature of GGW titanium-bonding-porcelain was lower than 800 ℃. Under 537 ℃ glass transition temperature, the coefficients of thermal expansion of pure Ti and GWW experimental titanium-bonding-porcelain were 8.42×10-6/℃, 8.29×10-6/℃ respectively. A difference of 0.13×10-6/℃ suggested GWW experimental titanium-bonding-porcelain has an ideal thermal compatibility with casted pure Ti. GGW bonding-porcelain has a promising future for titanium.

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