华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

制作方法对钴铬合金金瓷结合性能的影响

刘洁1   迟帅1   许谨1   王彦岩2   战德松3   

  1. 1.中国医科大学口腔医学院修复科,辽宁省口腔医学研究所,沈阳 1100022.中国科学院金属研究所分析测试部,沈阳 1100163.中国医科大学口腔医学院材料教研室,辽宁省口腔医学研究所,沈阳 11000
  • 收稿日期:2013-04-12 修回日期:2014-01-09 出版日期:2014-04-01 发布日期:2014-04-01
  • 通讯作者: 战徳松,教授,硕士,E-mail:zhandesong@126.com
  • 作者简介:刘洁,硕士,E-mail:493165009@qq.com

Effect of preparation methods on the metal-porcelain bond strength of Co-Cr alloys

Liu Jie1, Chi Shuai1, Xu Jin1, Wang Yanyan2, Zhan Desong3   

  1. 1. Dept. of Prosthodontics, School of Stomatology, China Medical University, Liaoning Institute of Dental Research, Shenyang 110002, China; 2. Dept. of Analysis and Test, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; 3. Dept. of Materials, School of Stomatology, China Medical University, Liaoning In-stitute of Dental Research, Shenyang 110002, China
  • Received:2013-04-12 Revised:2014-01-09 Online:2014-04-01 Published:2014-04-01

摘要:

目的   比较铸造钴铬合金与选区激光熔化(SLM)钴铬合金金瓷结合强度的差异。方法   用铸造法和SLM技术制作钴铬合金试件各10个,在中间1/3区域熔附瓷粉,采用剪切力试验测试金瓷结合强度并观察断裂类型。采用SPSS 13.0软件中的t检验对结果进行统计学分析。结果  铸造组、SLM组剪切力分别为(33.11±4.98)、(30.94±5.98) MPa,二者间差异无统计学意义(P>0.05)。样本的断裂类型为复合断裂。结论   SLM钴铬合金修复体精密度较高,其金瓷结合强度与铸造钴铬合金相近。

关键词: 钴铬合金, 剪切力, 选区激光熔化, 铸造

Abstract:

Objective   To compare the shear bond strength(SBS) of cast Co-Cr alloys and selective laser melting(SLM) Co-Cr alloys with those of dental porcelain. Methods  A dental porcelain (Vita) was applied on cast and SLM Co-Cr alloy specimens(n=10). SBS test was conducted, and fracture mode analysis was determined. Student’s t-test by SPSS 13.0 soft- ware was employed to analyze the data. Results   The SLM Co-Cr alloy specimens had lower SBS values than the cast Co-Cr alloy specimens (P>0.05). The metal-porcelain bond strength value of the cast group was (33.11±4.98) MPa, and that of the SLM group was (30.94±5.98) MPa. The specimens in both test groups exhibited mixed failure. Conclusion  The metal-porcelain system processed by SLM exhibit a bond strength that is similar to that of the cast group. This system also display a high precision.

Key words: Co-Cr alloy, shear bond strength, selective laser melting, casting