过氧化氢处理提高玻璃纤维桩与树脂水门汀的粘结强度  

H_2O_2 treatment improves the bond strength between glass fiber posts and resin cement

作　　者：张勇[1,2] 钟波[1] 谭建国[1] 周建锋[1] 陈立[1] 

机构地区：[1]北京大学口腔医学院·口腔医院修复科 [2]石家庄市第二医院口腔科,石家庄市050051

出　　处：《北京大学学报（医学版）》2011年第1期85-88,共4页Journal of Peking University:Health Sciences

摘　　要：目的:研究两种不同浓度的过氧化氢(H2O2)溶液处理玻璃纤维桩表面对纤维桩与树脂水门汀粘结强度的影响。方法:将16支玻璃纤维桩随机分为4组,每组4支。组1为对照组,组2为单纯硅烷组,组3为10%(体积分数)H2O2+硅烷组,组4为30%(体积分数)H2O2+硅烷组。将各组纤维桩与树脂水门汀粘结,制成哑铃形微拉伸试件,测定其微拉伸粘结强度并观察其断裂模式。结果:组1(对照组)微拉伸粘结强度为(18.81±4.04)MPa,组2(单纯硅烷组)为(26.70±9.63)MPa,组3(10%H2O2+硅烷组)为(39.07±6.47)MPa,组4(30%H2O2+硅烷组)为(46.05±5.97)MPa。结论:H2O2溶液处理玻璃纤维桩表面后涂布硅烷偶联剂可明显提高玻璃纤维桩与树脂水门汀的粘结强度。Objective：To evaluate the effect of etching with H2O2 on the bond strength between epoxy-based glass fiber posts and resin cement.Methods： Sixteen epoxy-based glass fiber posts were randomly divided into 4 groups（4 posts in each group） for different surface treatments.Group 1,no surface treatment（Control group）;Group 2,treated with silane coupling agent for 60 s;Group 3,immersed in 10% H2O2 for 10 min then treated with silane coupling agent for 60 s;Group 4,immersed in 30% H2O2 for 10 min then treated with silane coupling agent for 60 s.Resin cement was used for the post cementation to form resin slabs which were then sectioned and trimmed into dumbbell shape to obtain microtensile specimens.Microtensile bond strengths were tested and the failure modes were examined with a stereomicroscope.Statistical analysis of microtensile bond strengths was performed with Kruskal-Wallis test.Results： The microtensile bond strengths（standard deviation） were 18.81（4.04） MPa for Group 1,26.70（9.63） MPa for Group 2,39.07（6.47） MPa for Group 3,46.05（5.97） MPa for Group 4.Conclusion： Etching with H2O2 followed by silanization could significantly improve the bond strength between epoxy-based glass fiber posts and resin cement.

关 键 词：桩核技术 过氧化氢 树脂类 硅烷类 拉伸强度 

分 类 号：R783.1[医药卫生—口腔医学]