3种脱敏剂对氧化锆陶瓷粘结强度的影响  

Effects of Three Desensitizers on Bonding Strength of the Zirconia Ceramic

作　　者：管臻洁 陈蕾[2] 董新[1] 李奉华[1] 

机构地区：[1]中南大学湘雅口腔医院修复科,湖南长沙410008 [2]中南大学湘雅医院口腔医学中心

出　　处：《口腔医学研究》2015年第7期691-694,共4页Journal of Oral Science Research

摘　　要：目的:比较Hybrid Coat、Adper Easy One、Duraphat三种脱敏剂对氧化锆陶瓷粘结强度的影响。方法:预备人离体前磨牙至暴露牙本质后按不同处理时机(预备后、粘结前)分别涂布3种脱敏剂,以不涂布脱敏剂作为对照组,然后分别使用2种水门汀-RleyX Luting2树脂加强型玻璃离子水门汀(RMGIC)、RleyX Unicem自粘结型树脂水门汀(RC)将相同大小的氧化锆瓷片粘接到样本的牙本质表面,用万能试验机测试样本的粘接剪切强度,用SPSS19.0软件对数据进行统计学分析。结果:Hybrid Coat组剪切强度数值与对照组无差别;Adper Easy One组高于对照组(P<0.05);Duraphat组低于对照组(P<0.05);预备后组剪切强度高于粘结前组(P<0.05);RMGIC剪切强度低于RC(P<0.05)。结论:粘接锆瓷修复体时宜选用Hybrid Coat和Adper Easy One进行脱敏;在牙体预备后即刻使用脱敏剂效果较佳;本实验选用的粘结剂中,RC的粘结强度高于RMGIC。Objective：To evaluate the effects of three desensitizers on bond strength of zirconia ceramic.Methods：Freshly extracted human premolars were exposed dentinal tubules.Three desensitizers（Hybrid Coat,Adper Easy One,Duraphat suspension）were used in corresponding groups by different time.Zirconia ceramic slices were bonded to dentine surfaces with resin-modified glass ionomer cements（RMBIC）and resin cements（RC）respectively.The prepared teeth without desensitizer were used as control group.Specimens were tested by a universal testing machine to obtain the shear bond strength of each specimen and measured micro leakage by magenta-staining method.The value was analyzed by SPSS 19.0statistical software.Results：The difference of shear strength value between Hybrid Coat group and the control group had no statistical significance;The shear strength value of Adper Easy One group was higher than the control group（P〈0.05）;The shear strength value of Duraphat group was lower than the control group（P〈0.05）;The shear strength value of after preparatory group was higher than prior bonding group（P〈0.05）.RMGIC showed greater strength than RC（P〈0.05）.Conclusion：Hybrid Coat and Adper Easy One could be chosen for desensitization when bonding zirconia ceramic restoration desensitize should be used after vital pulp abutment teeth preparation to reduce the postoperative sensitivity and enhance the bond strength of dentin interface.The bond strength of RC is higher than RMGIC.

关 键 词：牙本质过敏症 脱敏剂 水门汀 粘结剪切强度 

分 类 号：R783.1[医药卫生—口腔医学]