临床口腔医学杂志2017，Vol.33Issue(4)：199-203,5.DOI:10.3969/j.issn.1003-1634.2017.04.003
乙醇湿粘接技术对髓腔牙本质粘接效果的影响
Effects of ethanol-wet bonding on the the resin bonding to the pulp chamber dentin
魏裕 1李彦2
作者信息
- 1. 广东医科大学第二临床医学院口腔教研室 广东 东莞 523808
- 2. 中山大学光华口腔医院口腔医学研究所 广东 广州 510055
- 折叠
摘要
Abstract
Objective:To compare the effects of ethanol-wet bonding and water-wet bonding technique on the resin bond strength and durability to the pulp chamber dentin.Methods:Thirty-two extracted human impacted third molars were cut horizontally to expose the pulp chamber with pulp tissues were removed and the canal orifices were sealed.They were randomly divided into 4 groups(n=8).The techniques of ethanol-wet bonding and water-wet bonding by using ethanol/water-based adhesive Single Bond 2(SB)and acetone-based adhesive One Step(OS)were applied in the pulp chamber dentin-resin bonding experiments.Thirty-two micro tensile samples in each group were tested in the micro tensile tester immediately and aging test of 6 months and 3000 thermal cycles.Each fractured sample was examined by SEM.Results:For the ethanol wet-bonding groups,the 24 h bond strength of the two etch-and-rinse adhesives were significantly higher than those of their water wet-bonding controls(P<0.05),and after accelerated aging,no decreases in bond strengths were observed(P>0.05).The SEM observation showed that in the ethanol wet-bonding groups,most of the fractured modes were mixed failures,there was no significantly difference before and after accelerated aging(P>0.05).For the water wet-bonding groups,the 24 h bond strengths of SB group were significantly higher than OS group(P<0.05).But both of them were significantly decreased after accelerated aging(P<0.05).Conclusion:Comparing to water wet-bonding,ethanol wet-bonding can improve the bond strength and bond durability to the pulp chamber dentin.关键词
髓腔牙本质/乙醇湿粘接/粘接界面/微拉伸强度/粘接耐久性Key words
Pulp chamber dentin/Ethanol-wet bonding/Bonding interface/Micro tensile bonding strength/Bond durability分类
医药卫生引用本文复制引用
魏裕,李彦..乙醇湿粘接技术对髓腔牙本质粘接效果的影响[J].临床口腔医学杂志,2017,33(4):199-203,5.
