EDTA预处理法对树脂黏结强度的影响  

Clinical research of EDTA pretreatment on the bonding strength of resin

作　　者：李婷婷[1] 孙敏敏[1] 康钧棠[1] 孙喆[1] 

机构地区：[1]上海交通大学医学院附属第九人民医院.口腔医学院牙体牙髓病科上海市口腔医学重点实验室,上海200011

出　　处：《上海口腔医学》2015年第5期594-597,共4页Shanghai Journal of Stomatology

基　　金：上海交通大学医学院附属第九人民医院院基金(院2011-09)

摘　　要：目的 :将乙二胺四乙酸(ethylene diamine tetraacetic acid,EDTA)预处理硬化牙本质法用于临床病例,与常规树脂黏结法进行自身对照,通过临床随访,评估预处理前、后的树脂黏结修复效果。方法:选择12例至少同时具有一对典型牙颈部楔状缺损且达Ⅲ级以上硬化牙本质的患者,以随机分配原则对患牙进行分组。实验组先以EDTA处理硬化牙本质表面,再行自酸蚀树脂黏结,对照组则直接行自酸蚀树脂黏结。采用双盲法以USPHS树脂修复评价标准分别在术后即刻、第6个月与第12个月进行随访评估,采用SAS 8.02软件包进行两样本等级资料的秩和检验。结果:第6个月和第12个月时,实验组的治疗效果均显著高于对照组(P<0.05)。结论:牙颈部楔状缺损表面的硬化牙本质经EDTA预处理后,能改善其树脂黏结强度,减少充填体边缘染色、边缘缺损及表面质地缺陷等的发生。PURPOSE： This study was to evaluate clinical results of adhesives to sclerotic dentin in non-carious cervical lesions pretreated with ethylene diamine tetraacetic acid （EDTA）. METHODS： Twelve patients who had at least one pair of teeth with typical cervical wedge-shaped defects and class 111 sclerotic dentin were selected. The teeth were randomly divided into experimental and control groups. In the experimental group, EDTA was used to pretreat dentin surface first and then self-etching resin adhesive; In the control group, only self-etching resin adhesive was used. Modified USPHS rating system was applied in baseline, 6 months and 12 months after treatment. SAS 8.02 software package was used for two-sample rank sum test. RESULTS： At the time point of 6-month and 12-month, the scores in the experimental group were significantly better than the control group （P〈0.05）. CONCLUSIONS： EDTA pretreatment of the sclerotic dentin of cervical wedge-shaped defects could improve the resin bonding strength, marginal discoloration, marginal form and surface quality.

关 键 词：硬化牙本质 乙二胺四乙酸 自酸蚀 

分 类 号：R783[医药卫生—口腔医学]