不同粘结系统及4种充填方法对牙本质与充填体间微渗漏影响的研究  

Effect of Different Bonding System and Four Filling Methods on the Microleakage of Dentin and Dental Filling Material Surface

作　　者：李玉亭[1] 李艳萍[1] 牛玉梅[1] 

机构地区：[1]哈尔滨医科大学口腔医院口腔内科,黑龙江哈尔滨150001

出　　处：《口腔医学研究》2013年第9期839-841,共3页Journal of Oral Science Research

摘　　要：目的:研究2种粘结系统及不同充填方法对牙本质与充填体间微渗漏的影响。方法:选取56颗因正畸需要拔除的前磨牙,采用析因设计随机分成A,B组。去除咬合面釉质,暴露平整的牙本质表面,在其中央制备3mm×3mm×3mm大小的箱状洞型。A组使用自酸蚀粘结系统,B组使用全酸蚀粘结系统,两组分别采用4种分层充填方法进行树脂充填并打磨抛光。实验牙完成充填后,置于(37±1)℃恒温水浴箱内24h后取出。使用扫描电镜观察颊壁,舌壁的微渗漏,并进行统计学分析。结果:使用自酸蚀粘结系统并分4层斜向充填复合树脂时,牙本质与充填体间微渗漏最小(P<0.05)。结论:粘结系统和树脂充填方法可影响牙体与充填体间微渗漏的大小,且两者之间存在交互作用。自酸蚀粘结系统要优于全酸蚀粘结系统。Objective： To compare the effect of two bonding systems and different filling methods on the mic roleakage of dentin and dental filling material surface. Methods： The occlusal enamel was removed to expose a flat superficial dentin surface on human extracted premolars that were divided into group A and group B at random. Cavities with 3mm long × 3mm wide were prepared to a depth 3mm below the dentin surfaces. Group A,with total --etching adhesives; Group B, with self--etching adhesives, two groups respectively use 4 layering techniques of resin composite restorations. The samples were kept at（37± 1）℃for 24 hours. The microleakage between the res torations and tooth struture was measured under a scanning electron microscope（SEM）. The results were analyzed by a two--way ANOVA. Results： The smallest mieroleakage was found in the group that used self--etching adhe- sives and filled with four oblique increments. Conclusion： The adhesive system and restorative technique affected significancely the microleakage of tooth and dental filling material suiface.

关 键 词：粘结系统 微渗漏 析因设计 充填方法 

分 类 号：R781.05[医药卫生—口腔医学]