酸蚀对自黏结树脂水门汀与牙本质黏结强度的影响

上海口腔医学 ›› 2015, Vol. 24 ›› Issue (3): 302-306.

酸蚀对自黏结树脂水门汀与牙本质黏结强度的影响

宣桂红,王海花

绍兴市人民医院口腔科,浙江绍兴 312000

收稿日期:2014-07-17 出版日期:2015-06-20 发布日期:2015-07-24
通讯作者: 王海花,E-mail:sxswhh@163.com
作者简介:宣桂红（1977-）,女,硕士,副主任医师,E-mail:bessxgh@163.com
基金资助:
浙江省绍兴市科学技术局公益性技术应用研究计划项目（2012B70079）

The effect of acid etching on bond strength of different self-adhesive resin cements to dentin

XUAN Gui-hong,WANG Hai-hua

Department of Stomatology, Shaoxing People’s Hospital. Shaoxing 312000, Zhejiang Province, China

Received:2014-07-17 Online:2015-06-20 Published:2015-07-24
Supported by:
Public Technology Applied Research Project of Science and Technology Bureau of Shaoxing City of Zhejiang Province (2012B70079)

摘要/Abstract

摘要： 目的:评价酸蚀预处理对自黏结树脂水门汀Unicem、G-Cem、Clearfil SA Cement、BisCem与牙本质微拉伸黏结强度的影响。方法:选用人无龋离体第三恒磨牙32颗,用低速切片机将选用磨牙冠1/4处沿垂直于牙体长轴方向切开,暴露牙本质。实验组在牙本质表面涂布37%磷酸,冲洗、吹干,对照组不做处理。然后将各组与直径为5 mm、高为4 mm的树脂块分别用 Unicem、G-Cem、Clearfil SA Cement、BisCem进行黏结。水浴24 h后,用低速切片机将样本切割成约1 mm×1 mm×8 mm条状,再进行微拉伸测试,并通过扫描电镜观察黏结界面。采用SPSS16.0软件包对数据进行统计学分析。结果:Unicem组（12.9±3.2） MPa、G-Cem组（11.7±2.6） MPa及Clearfil SA Cement组（10.9±2.3） MPa与牙本质的微拉伸黏结强度显著高于BisCem组（6.8±2.4） MPa（P<0.05）。酸蚀预处理后,Unicem组（9.2±2.5） MPa、G-Cem组（6.1±2.3） MPa及Clearfil SA Cement组（4.8±1.7） MPa黏结强度显著降低（P<0.05）,而BisCem组（7.1±2.9） MPa黏结强度无显著差异。结论:牙本质的表面酸蚀预处理降低了自黏结树脂水门汀G-Cem、Clearfil SA Cement及Unicem 的牙本质黏结强度,但对BisCem的牙本质黏结强度无显著影响。

关键词: 自黏结树脂水门汀, 酸蚀, 微拉伸黏结强度

Abstract: PURPOSE: To investigate the effect of acid etching on bond strength (μTBS) of self-adhesive resin cements (Unicem, G-Cem, Clearfil SA Cement, BisCem) to dentin. METHODS: Thirty-two human third molars without caries were used for the study. One fourth of the crowns were cut off, perpendicular to the long axis of the tooth with (Isomet) a low-speed saw, in order to expose the dentin surfaces of the sectioned sides. The sectioned dentin surfaces of the experimental groups were etched for 15 s. Subsequently, resin blocks were bonded to the dentin surfaces, with one of the four cements (Unicem, G-Cem, Clearfil SA Cement, BisCem). After being stored in water for 24 hours, all specimens were perpendicularly sectioned through the dentin-resin interfaces, prepared into beams about 1 mm×1 mm×8 mm for μTBS tests with micro-tensile tester. The micro-morphologies of the cement-dentin interfaces were assessed using scanning electron microscope. The data was analyzed using SPSS16.0 software package. RESULTS: Without pre-treatment of acid etching, Unicem group (12.9±3.2) MPa, G-Cem group (11.7±2.6) MPa and Clearfil SA Cement group (10.9±2.3) MPa possessed a higher bond strength than BisCem group (6.8±2.4) MPa (P<0.05). Specimens with pre-treatment of acid etching showed a significantly lower dentin bond strength compared to those without pretreatment of acid etching (P<0.05) in self-adhesive cements (G-Cem, Clearfil SA CementUnicem, Unicem), but there was no significant difference in bond strength in BisCem group with or without acid etching. CONCLUSIONS: With pretreatment of acid etching, the bond strength of self-adhesive resin cements to dentin decreases in G-Cem, Clearfil SA Cement and Unicem group, while there is no significant effect on the bond strength of BisCem group.

Key words: Self-adhesive cement, Aid etching, Micro-tensile bond strength

中图分类号:

R783.1

宣桂红,王海花. 酸蚀对自黏结树脂水门汀与牙本质黏结强度的影响[J]. 上海口腔医学, 2015, 24(3): 302-306.

XUAN Gui-hong,WANG Hai-hua. The effect of acid etching on bond strength of different self-adhesive resin cements to dentin[J]. Shanghai Journal of Stomatology, 2015, 24(3): 302-306.

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