不同黏结方法和不同桩道部位对纤维桩黏结强度的影响  

Effect of different bonding procedure and root region on bond strength of fiber posts to root canal

作　　者：张献芳[1] 徐培成[1] 钱文昊[1] 

机构地区：[1]上海市徐汇区牙病防治所口腔修复科,上海200032

出　　处：《上海口腔医学》2014年第3期294-299,共6页Shanghai Journal of Stomatology

基　　金：徐汇区科学技术委员会资助项目(SHXH201130)~~

摘　　要：目的:比较不同黏结方法在不同桩道部位对纤维桩黏结剪切强度的影响。方法 :选取42颗离体上颌中切牙,根管治疗桩道预备后根据不同的黏结方法随机分为6组,Ⅰ组为全酸蚀黏结剂Luxabond+自黏结树脂水门汀Rely X TM Unicem,Ⅱ组为全酸蚀黏结剂Luxabond+双固化树脂水门汀Luxacore,Ⅲ组为自酸蚀黏结剂Contax+自黏结树脂水门汀Rely XTMUnicem,Ⅳ组为自酸蚀黏结剂Contax+双固化树脂水门汀Luxacore,Ⅴ组为自黏结树脂水门汀Rely XTM Unicem,Ⅵ组为双固化树脂水门汀Luxacore。纤维桩黏固后行薄片推出实验,并在扫描电镜下观察黏结界面及根管内壁的微观形态。采用SPSS13.0软件包对数据进行统计学分析。结果:不同黏结方法纤维桩的黏结强度差异具有显著性(P<0.05),第Ⅰ组和第Ⅲ组的黏结强度最高。扫描电镜观察,Ⅰ组和Ⅱ组的黏结界面有树脂突形成,黏结界面也更加致密。结论:自黏结树脂水门汀Rely XTM Unicem若配合使用全酸蚀及自酸蚀黏结剂,可显著提高纤维桩的黏结强度。PURPOSE： To evaluate the effect of different bonding procedure and different root region on the bond strength of fiber posts to root canal. METHODS： Forty-two extracted intact human maxillary central incisors were endodontically treated with post spaces be prepared and divided into 6 groups randomly. The fiber posts were then luted with the following different bonding procedures. Group I ： total etch dentin bonding agent Luxabond ＋ self-adhesive system Rely XTM Unicem; Group Ⅱ ： total etch dentin bonding agent Luxabond ＋ dual-cure rein cement Luxacore; Group Ⅲ ： self etch dentin bonding agent Contax ＋ self -adhesive system Rely X TM Unicem; Group IV ：self etch dentin bonding agent Contax ＋ dual -cure rein cement Luxacore; Group Ⅴ ：self-adhesive system Rely X TM Unieem; Group WI ：dual-cure rein cement Luxaeore. After dowel cementation, thin-slice push-out test was performed. The bonding interface and dentin surface were examined under scanning electron microscope. The data was statistically analyzed using SPSS13.0 software package. RESULTS： The results showed that different bonding procedures had significant different impacts on the bond strength （P〈0.05）.Group I and Group Ⅲ had significantly higher bond strength compared with other groups. Resin tags of dentin bonding interface were observed in Group I and Group Ⅱ and intimate adaptations of resin cement with the substrate were revealed. CONCLUSIONS： Coupled with total etch or self etch dentin bonding agent, self- adhesive system Rely X TM Unicem can improve the bonding strength of fiber posts obviously.

关 键 词：黏结强度 纤维桩 薄片推出实验 

分 类 号：R783.3[医药卫生—口腔医学]