SEM观察Qmix、MTAD与EDTA去除根管玷污层效果的体外对比研究  

The effects of root canal smear layer removal of Qmix,MTAD and EDTA observed under scanning electron microscope: An in vitro study

作　　者：赵琦 尹艳娇 张志纯 ZHAO Qi;YIN Yanjiao;ZHANG Zhichun(121000,Jinzhou Medical University,China;Department of Stomatology,The Second Affiliated Hospital of Xinjiang Medical University,Urumqi;Jinzhou Stomatological Hospital)

机构地区：[1]锦州医科大学,121000 [2]新疆医科大学第二附属医院口腔科 [3]拜博医疗集团有限公司沈阳大东拜博拜尔口腔门诊部 [4]锦州市口腔医院

出　　处：《实用口腔医学杂志》2018年第6期834-837,共4页Journal of Practical Stomatology

摘　　要：目的:探讨Qmix、MTAD与EDTA 3种冲洗液在不同冲洗温度和冲洗时间作用下清除根管玷污层的效果。方法:纳入240颗离体单根前牙,采机用Protaper next镍钛锉进行根管机械预备并以1%次氯酸钠为基础冲洗液,实验分组根据终末冲洗液不同分成4组:Qmix组、MTAD组、EDTA组(阳性对照组)与生理盐水组(阴性对照组),每组再根据冲洗温度和冲洗时间随机均分为6小组(n=10),分别为4℃30 s组、4℃60 s组、20℃30 s组、20℃60 s、37℃30 s组和37℃60 s组。SEM观察分析根管壁玷污层清除的效果。结果:Qmix组、MTAD组、EDTA组去除根管玷污层效果优于生理盐水组(P <0. 001),Qmix组玷污层清洁效果优于MTAD和EDTA组(P <0. 05);组内比较,在温度相同时,冲洗时间60 s组优于30 s组,在冲洗时间相同时,20℃和37℃优于4℃(P <0. 05)。结论:Qmix冲洗液清除根管壁玷污层的效果优于MTAD和EDTA,37℃冲洗60 s效果更好。Objective:To observe the root canal smear layer removal efficiency of Qmix,MTAD and EDTA.Methods:240 isolated front teeth with single root were collected and the root canal preparation was conducted using motorized ProTaper next.1%sodium hypochlorite was used as the basic rinse solution.According to the final rinse solution the teeth were divided into 4 groups:Qmix,MTAD and EDTA group(positive control)and saline group(negative control),The teeth in each group was then randomly divided into 6 subgroups according to the rinse temperature and the rinse time(n=10)respectively,4℃30 s,4℃60 s,20℃30 s,20℃60 s,37℃30 s group and 37℃60 s groups.SEM was used to observe the root canal smear layer removal effect.Results:Qmix,MTAD and EDTA showed stronger effect of smear layer removal than saline,P<0.001,Qmix showed the strongest effect(P<0.05).The rinse for 60 s was more effective than that for 30 s at the same temperature.When the rinsing time is constant,the rince at 37℃and 20℃was more effective than that at 4℃(P<0.05).Conclusion:Qmix is more effective than MTAD and EDTA in the canal smear layer removal,at 37℃rinse for 60 s is the most effective.

关 键 词：根管玷污层 扫描电镜 根管冲洗 Qmix 

分 类 号：R781.3[医药卫生—口腔医学]