摘要
目的:比较2种树脂黏结剂黏结后不同时间对剪切强度的影响。方法:选择无龋坏的人磨牙48颗,随机分为2组,每组24颗。第1组用RelyX unicem进行黏结,第2组用Variolink 2进行黏结。所有样本黏结后,在37℃蒸馏水中分别储存2h、24h和1周后,每组随机取出8个试件进行测试,记录剪切强度值。用SPSS11.0软件包对结果进行分析,并在光学显微镜下观察破坏情况。结果:随着黏结后储存时间的增加至1周,2种树脂黏结剂黏结剪切强度值均显著增加(P<0.05),并且破坏界面均发生在牙本质与黏结剂之间。结论:黏结后储存时间可以影响树脂黏结剂黏结剪切强度的效果。
PURPOSE： To compare the shear bond strength of different composite resin cement systems at different time intervals. METHODS：48 healthy non-carious human molars were selected in the study.The samples were divided into two groups,24 in each group.（1） RelyX unicem was used on bonding,（2） Variolink 2 was used on bonding. All specimens were stored in water at 37℃ for 2 hours,24 hours and 1 week. 8 specimens in each group were stressed in shear until failure. Statistical analysis was performed with SPSS11.0 software package.Debonged surface was examined under light microscope. RESULTS： Shear bond strengths of two resin cements showed a significant increase as time went （P〈0.05）. The failure involved the adhesive/dentin interfaces. CONCLUSIONS： Time can influence the shear bond strength using different composite resin cement systems. Supported by Shanghai Leading Academic Discipline Project （Grant No.T0202）.
出处
《上海口腔医学》
CAS
CSCD
2007年第5期527-529,共3页
Shanghai Journal of Stomatology
基金
上海市重点(特色)学科建设项目(T0202)
关键词
树脂黏结剂
剪切强度
时间
Adhesive resin cement
Shear bond strength
Time
