摘要
目的:评价3种树脂水门汀对CAD/CAM全瓷-牙本质剪切强度的影响。方法:选取新鲜拔除的人磨牙30颗,制备牙本质黏结面,随机分为3组(n=10),分别选用全酸蚀树脂水门汀RelyX ARC、自酸蚀树脂水门汀Clearfil DCBond和自黏结树脂水门汀RelyX Unicem对CAD/CAM硅酸锂玻璃全瓷进行黏结,测试3种树脂水门汀对CAD/CAM全瓷-牙本质的剪切强度,并通过立体显微镜观察牙本质的黏结界面。采用SPSS11.0软件包对数据进行统计学分析。结果:RelyX ARC组的剪切强度为(15.90±6.15)MPa,Clearfil DC Bond组的剪切强度为(14.41±5.07)MPa,而RelyXUnicem组的剪切强度为(23.29±7.39)MPa,与前2组相比有显著性差异(P<0.05)。立体显微镜观察显示,3组黏结断面均位于牙本质与树脂水门汀之间。结论:自酸蚀树脂水门汀及自黏结树脂水门汀与CAD/CAM硅酸锂玻璃陶瓷修复体的黏结强度不低于传统全酸蚀树脂水门汀,且临床操作简便,为临床全瓷黏结提供了更多便利与选择。
PURPOSE： To evaluate the bond strength of 3 resin cements on ceramic-dentin.METHODS： Thirty sound human posterior tooth were selected for this study and the flat dentin surfaces were prepared.The specimens were divided into 3 groups（n=10） randomly,which were bonded to the CAD/CAM ceramics with RelyX ARC（etch-and-rinse adhesive）,Clearfil DC Bond（self-etching resin cement） and RelyX Unicem（self-adhesive resin cement）.The bond strengths were tested and the bond surfaces were observed under stereoscopic microscope.SPSS 11.0 software package was used for statistical analysis.RESULTS： The shear bond strength of RelyX ARC and Clearfil DC Bond was（15.90±6.15）MPa and（14.41±5.07）MPa,respectively.The shear strength of RelyX Unicem was（23.29±7.39）MPa,significantly higher than the others.The shear strength between the three resin cements was significantly different（P〈0.05）.CONCLUSION： Clearfil DC Bond and RelyX Unicem can achieve a successful bond on CAD/CAM ceramic crowns.
出处
《上海口腔医学》
CAS
CSCD
北大核心
2012年第1期20-23,共4页
Shanghai Journal of Stomatology
基金
上海市卫生局资助项目(2009074)~~
关键词
树脂水门汀
剪切强度
牙本质
全瓷
Resin cement
Shear bond strength
Dentin
All-ceramic
