不同冲洗液对根管冠方微渗漏影响的体外研究  

An in vitro study of different irrigants on coronal microleakage

作　　者：郭晓琳 郭晓瑨 鲁丽珍 吴明 卢茜 

机构地区：[1]秦皇岛市妇幼保健院口腔科,河北秦皇岛066000 [2]华北理工大学口腔医学院,河北唐山063000

出　　处：《牙体牙髓牙周病学杂志》2015年第7期430-433,共4页Chinese Journal of Conservative Dentistry

基　　金：秦皇岛市科技支撑项目(201101A324)

摘　　要：目的：比较3种根管冲洗液对冠方微渗漏的影响。方法：选择45个单根管前磨牙（弯曲度为10~20°）,随机分为3组（n=15）：20 g/L氯亚明组、20 g/L次氯酸钠组、170 g/L MTAD组,以Pro Tape预备根管,各组分别用不同冲洗液冲洗根管,热垂直加压法充填根管,用染色法比较不同冲洗液对根管冠方封闭性的影响。结果：不同冲洗液对充填后根管冠方微渗漏影响不同,次氯酸钠组渗漏量略小于氯亚明组（P〉0.05）,MTAD组冲洗后产生的微渗漏最小（P〈0.05）。结论：20 g/L氯亚明、20 g/L次氯酸钠,能有效去除碎屑和玷污层,但清洁能力不如170 g/L MTAD;170 g/L MTAD能去除玷污层,减少冠渗漏的发生。AIM： To evaluate the influence of different chemical irrigants on coronal microleakage after root canal filling. METHODS： 45 premolar teeth with single canal were randomly divided into 3 groups（ n = 15）. The teeth were instrumented with protaper and root canals of the 3 groups were respectively irrigated with 20 g / L chloramine（Group 1）,20 g/L Sodium hypochlorite（Group 2） and 170 g/L MTAD（Group 3）. Then each tooth canal was obturated byh warm vertical condensation technique and coronal microleakage was determined by color staining method.RESULTS：Group 3 showed significantly less microleakage than group 1 and group 2（ P〈0. 05）,while there was no significant difference between group 1 and group 2（ P〉0. 05）. CONCLUSION： 170 g / L MTAD is more effective than 20 g / L chloramine and 20 g / L Sodium hypochlorite in removing smear layer and reducing the microleakage after root canal obturation.

关 键 词：MTAD 冠方微渗漏 根管冲洗液 玷污层 

分 类 号：R781.05[医药卫生—口腔医学]