四种自酸蚀粘接剂的粘接强度耐久性实验研究  

Micro-tensile bond strength test of the durability of four commercial self-etching systems

作　　者：伊哲[1] 朱琳琳[2] 李柯檬 

机构地区：[1]中国医科大学口腔医学院·附属口腔医院口腔修复科,沈阳110002 [2]中国医科大学口腔医学院·附属口腔医院牙体牙髓病科,辽宁省口腔医学研究所,辽宁省口腔疾病重点实验室,沈阳110002

出　　处：《中国实用口腔科杂志》2015年第6期358-362,共5页Chinese Journal of Practical Stomatology

基　　金：辽宁省自然科学基金(2013021088)

摘　　要：目的评价4种自酸蚀粘接剂的粘接强度耐久性。方法选择2012年1—6月就诊于中国医科大学附属口腔医院口腔外科的患者因非龋源性原因拔除的无龋第三磨牙80颗,采用石膏打磨机去除牙釉质以充分暴露牙本质,600目砂纸在水环境中研磨去除表面玷污层。采用随机抽签的原则,每4颗牙为一组,共分为20组,在其表面分别涂布4种临床上使用的自酸蚀粘接剂[Easy Bond(EB)、G-Bond plus(GBp)、Clearfil Mega Bond(MB)、Clearfil Protect Bond(PB)]。每种粘接剂分为5组对应各个时间点(24 h、3个月、6个月、12个月和24个月)。粘接剂的使用严格按照各自产品说明书进行操作。之后,在其表面堆砌约5 mm厚的复合树脂。将其置于无菌双蒸水中保存在37℃恒温箱内,分别于24 h和3、6、12、24个月后将其切割成截面为1.0 mm2的长柱状后进行微拉伸测试,比较4种粘接剂在不同时间点的粘接强度耐久性。结果一步自酸蚀粘接剂EB和GBp在24个月后的粘接强度较24 h的粘接强度显著降低(P<0.05)。二步自酸蚀粘接剂MB和PB在24个月后的粘接强度与24 h的相比差异无统计学意义(P>0.05)。结论含有亲水性成分甲基丙烯酸羟乙酯(HEMA)的一步自酸蚀粘接剂24 h后的粘接力强于不含HEMA的粘接剂。与一步自酸蚀粘接剂相比,二步自酸蚀粘接剂在耐久性测试中表现更为稳定。Objective To evaluate the bonding performance of four commercial available self-etching systems by mi- cro-tensile bond strength test. Methods Four self-etching adhesives were included in this study： Easy Bond （EB, 3M ESPE, USA）, G-Bond plus （GBp, GC Corporation, Japan）, Clearfil Mega Bond （MB, Kuraray Medical INC, Japan） and Clearfil Protect Bond （PB, Kuraray Medical INC, Japan）. Eighty human third molars without caries were separated into 20 groups with 4 teeth in each group for different water-storage durations. After bonding by following the manufactur- er＇s instruction, the teeth were built-up with resin composite （Clearfil AP-X） and being stored in 37 ℃ distilled water for 24 hours, 3 months, 6 months, 12 months and 24 months. The bonded specimens were sectioned into 1.0 mm2 sticks for the micro-tensile bond strength （IxTBS） test. The obtained data were expressed as Mpa and statistically analyzed by Games-Howell test （P 〈 0.05）. Results Of all-in-one adhesives, EB and GBp showed significant decrease after 24 months of water storage in comparison with 24 hours. On the other hand, two-step self-etching systems expressed no sta- tistical decrease in ITBS after 24 months water-storage compared with that of 24 hours. Conclusion After 24hours, the bonding performance of HEMA-contained all-in-one system is better than that of HEMA-free all-in-one system.On the other hand, two-step self-etching systems might have consistent bonding performance compared with that of all-in-one systems in long-time durability test.

关 键 词：耐久性测试 树脂牙本质粘接 微拉伸测试 自酸蚀粘接剂 扫描电子显微镜 

分 类 号：R78[医药卫生—口腔医学]