不同表面处理对氧化锆与牙釉质黏结强度的影响

上海口腔医学 ›› 2014, Vol. 23 ›› Issue (4): 436-440.

不同表面处理对氧化锆与牙釉质黏结强度的影响

程竑^{1, 2}, 乔广艳², 董聪², 张富强¹

1.上海交通大学医学院附属第九人民医院·口腔医学院口腔修复科,上海市口腔医学重点实验室,上海 200011;
2.上海市口腔病防治院·上海市口腔医院口腔修复科,上海 200001

收稿日期:2014-02-28 出版日期:2014-08-20 发布日期:2014-10-20
通讯作者: 张富强,E-mail:fqzhang@vip.163.com
作者简介:程竑(1969-), 男, 学士, 主任医师、教授, E-mail:hongcheng899@163.com

An in vitro comparison of the influence of different surface treatment on shear bond strength between zirconia and enamel

CHENG Hong^1,2, QIAO Guang-yan², DONG Cong², ZHANG Fu-qiang¹

1.Department of Prosthodontics, Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology. Shanghai 200011;
2.Department of Prosthodontics, Shanghai Stomatological Disease Center. Shanghai 200001, China

Received:2014-02-28 Online:2014-08-20 Published:2014-10-20

摘要/Abstract

摘要： 目的:比较4种表面处理方法对氧化锆陶瓷与牙釉质黏结强度的影响,为临床应用提供参考。方法:将切割烧结后的Lava氧化锆瓷块(2.7 mm×2.7 mm×5 mm)40件分为4组,分别经喷砂、喷砂/硅烷偶联剂、喷砂/CoJet Sand/硅烷偶联剂、无处理4种表面处理后,用RelyX Unicem与牙釉质黏结,测试剪切黏结强度,采用SPSS20.0软件包对数据进行统计学分析,利用扫描电镜观察断面模式。结果:喷砂/CoJet Sand/硅烷偶联剂组的剪切强度显著高于其他各组(P<0.001),且人工老化试验前、后无显著差异(P=0.595)。电镜观察该组断面模式,未发现“黏结界面破坏型”。结论:氧化锆表面经摩擦化学法硅涂层和硅烷偶联剂联合处理,能够有效提高氧化锆的黏结强度和耐久性。

关键词: 氧化锆, 剪切强度, CoJet, 硅烷偶联剂

Abstract: PURPOSE: To compare the shear bond strength of zirconia to enamel using different surface treatments, in order to provide evidence for clinical practice. METHODS: Forty cut and fully sintered Lava frame zirconia blocks (2.7 mm×2.7 mm×5 mm) were randomly divided into 4 groups and subjected to 4 different surface treatments: no treatment (control), airborne-particle abrasion; airborne-particle abrasion and silane; airborne-particle abrasion and CoJet sand (silica coating with 30 μm silica-modified alumina particles) and silane. After surface treatment, the zirconia blocks were bonded to acid-etched enamel with self-adhesive resin cement (RelyX Unicem). Half of the specimens in each group were stored in 37℃ distilled water for 24 h and the others were thermocycled (5℃ and 55℃) for 5000 cycles. All specimens were subjected to shear bond strength (SBS) test. The data was analyzed with SPSS 20.0 software package for two-way ANOVA and t test. Failure mode was observed and analyzed by scanning electron microscope (SEM). RESULTS: Airborne-particle abrasion and CoJet Sand and silane group resulted in a significantly higher SBS than those in other groups (P<0.001), while no significant difference existed between the specimens which were submerged in 37℃ water stored and thermocycled (P=0.595) within this group. No adhesive failures were observed by SEM in this group. CONCLUSIONS: The combination of tribochemical silica coating with silane coupling can improve the bond of zirconia when self-adhesive resin cement is used and it is recommended as a pre-treatment to increase zirconia retention.

Key words: Zirconia, Shear bond strength, CoJet, Silane

中图分类号:

R783.3

程竑, 乔广艳, 董聪, 张富强. 不同表面处理对氧化锆与牙釉质黏结强度的影响[J]. 上海口腔医学, 2014, 23(4): 436-440.

CHENG Hong, QIAO Guang-yan, DONG Cong, ZHANG Fu-qiang. An in vitro comparison of the influence of different surface treatment on shear bond strength between zirconia and enamel[J]. Shanghai Journal of Stomatology, 2014, 23(4): 436-440.

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