华西口腔医学杂志 ›› 2015, Vol. 33 ›› Issue (6): 638-641.doi: 10.7518/hxkq.2015.06.018

• 修复工艺学专栏 • 上一篇    下一篇

氧化铝喷砂对牙科用氧化锆基底与饰面瓷结合强度的影响

曾强,李宁,周亚男,颜家振,刘文博   

  1. 四川大学制造科学与工程学院,成都 610065
  • 收稿日期:2015-07-06 修回日期:2015-09-10 出版日期:2015-12-01 发布日期:2015-12-01
  • 通讯作者: 李宁,教授,博士,E-mail:lining@scu.edu.cn
  • 作者简介:曾强,硕士,E-mail:zengqiang2013@foxmail.com

Effect of Al2O3 sandblasting on the bond strength between 3mol% yttrium-stabilized tetragonal zirconium polycrystal zirconia framework and veneering porcelain

Zeng Qiang, Li Ning, Zhou Yanan, Yan Jiazhen, Liu Wenbo   

  1. School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China)
  • Received:2015-07-06 Revised:2015-09-10 Online:2015-12-01 Published:2015-12-01

摘要: 目的 研究氧化铝(Al2O3)喷砂对牙科用氧化锆基底与饰面瓷结合强度的影响。方法 按照ISO 9693的要求,制作(25±1) mm×(3±0.1) mm×(0.5±0.05) mm的片状氧化锆试样21个,随机分为3组:A组进行110目Al2O3喷砂;B组进行80目Al2O3喷砂;对照组不做喷砂处理。测定所有基底瓷的表面粗糙度以及基底瓷与饰面瓷的结合强度,扫描电镜(SEM)观察结合界面微观形貌,能谱分析(EDS)检测界面元素分布。结果 A组、B组和对照组基底瓷表面粗糙度分别为(1.272±0.149)、(0.622±0.113)、(0.221±0.065) μm;瓷瓷结合强度分别为(28.21±1.52)、(27.71±1.27)、(24.87±3.84) MPa。统计结果显示:各组间表面粗糙度的差异具有统计学意义(P<0.05);A组和对照组之间结合强度的差异具有统计学意义(P<0.05),而B组与A组和对照组之间的差异均无统计学意义(P>0.05)。破坏模式以结合界面附着破坏为主。SEM观察结果显示瓷瓷结合界面结合紧密,EDS结果表明界面无明显元素渗透现象。结论 Al2O3喷砂能提高基底瓷与饰面瓷的结合强度,但其作用不明显。

关键词: 喷砂, 氧化锆基底, 瓷瓷结合, 表面粗糙度, 热膨胀系数

Abstract: Objective The effect of sandblasting on the bond strength between 3mol% yttrium-stabilized tetragonal zirconium polycrystal (3Y-TZP) zirconia framework and veneering porcelain was evaluated. Methods A total of 21 specimens [ (25±1) mm× (3±0.1) mm× (0.5±0.05) mm] were prepared according to ISO 9693. The specimens were then randomly divided into 3 groups. Sandblasting was performed on 2 meshes of Al2O3 particles: group A with mesh 110 and group B with mesh 80. Group C, which was not sandblasted, was the control group. The surface roughness of the zirconia framework, as well as the bond strength between 3Y-TZP zirconia framework and veneering porcelain, was measured. The interface microstructure was observed by scanning electron microscope (SEM), and elemental distribution was detected by energy dispersive spectroscopy (EDS). Results Surface roughness values were (1.272±0.149) μm for group A, (0.622±0.113) μm for group B, and (0.221±0.065) μm for group C. Statistical significance were found among groups (P<0.05). The bond strength values were (28.21±1.52) MPa for group A, (27.71±1.27) MPa for group B, and (24.87±3.84) MPa for group C. Statistical significance was found between group A and group C (P<0.05), whereas the other groups had no statistical significance (P>0.05). Interface adhesion failure was the primary performance. SEM images showed the close interface bonding, and EDS showed that the interface had no obvious element penetration. Conclusion Al2O3 sandblasting can slightly enhance the bond strength between zirconia framework and veneering porcelain.

Key words: sandblasting, zirconia framework, ceramic-porcelain bonding, surface roughness, coefficient of thermal expansion

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