MTA作为根管封闭剂对根管充填后根尖微渗漏的体外实验研究  

In vitro analysis of MTA as root canal sealers on apical microleakage after root canal filling

作　　者：李炎钊 黄念全 吴敏茹 

机构地区：[1]高要市人民医院口腔科,广东高要524060 [2]肇庆高等医专学校附属医院口腔科,广东肇庆524060

出　　处：《海南医学》2011年第22期21-22,共2页Hainan Medical Journal

摘　　要：目的比较MTA糊剂、Vitapex糊剂、氧化锌丁香油糊剂根充后对根管侧壁和根尖区的微渗漏情况,评价MTA糊剂的封闭性能。方法收集离体牙常规根管预备后随机分为三组,分别使用三种糊剂充填后染色,按一定时间取出,片切,并测量染液渗入根管侧壁和根尖孔的长度。结果 MTA组染液渗入根管侧壁和根尖孔的长度数值于1周、2周、4周时均少于Vitapex组和氧化锌丁香油组(P<0.05)。结论 MTA糊剂的根管封闭性均优于Vitapex糊剂和氧化锌丁香油糊剂,有望作为新的根管封闭剂使用。Objective To compare the effect of MTA paste, Vitapex paste and zinc oxide-eugenol paste on apical microleakage after root canal filling, and evaluate the sealing ability of the MTA paste. Methods Extracted teeth were randomly divided into three groups （group A, group B, group C） after treated with routine root canal preparation technique, each with 30 cases. The teeth in the three groups were filled with MTA paste, Vitapex paste and zinc oxide-eugenol paste, respectively, and then dyed and sliced to measure the length of dyeing liquid penetrated into the root tip and root canal wall. Results The length of dyeing liquid penetrated into the root tip and root canal wall at one week, two weeks, four weeks in group A was significantly less than that in group B and group C （P〈0.05）. Conclusion The performance of MTA paste was superior than that of zinc oxide-eugenol paste and Vitapex paste, which was expected to serve as a new root canal sealer.

关 键 词：MTA糊剂 VITAPEX糊剂 氧化锌丁香油糊剂 微渗漏 染色 

分 类 号：R783[医药卫生—口腔医学]