不同冲洗液对根尖溢出碎屑的影响  

The effect of various irrigants on apically extruded debris: an in vitro study

作　　者：张凌[1] 朱琳琳[1] 张梦龙[1] 

机构地区：[1]中国医科大学口腔医学院牙体牙髓病科,辽宁沈阳110002

出　　处：《上海口腔医学》2014年第6期695-698,共4页Shanghai Journal of Stomatology

摘　　要：目的 :比较根管预备后不同冲洗液对根尖溢出碎屑的影响。方法 :58颗正畸拔除的单根牙随机分为4组,常规根管预备后,采用不同冲洗液冲洗,对照组(A组):7颗、蒸馏水冲洗;实验组每组17颗,B组:1%Na OCl冲洗;C组:2.5%Na OCl冲洗;D组:17%EDTA冲洗。收集冲洗后的冲洗液,通过紫外可见分光光度计检测吸光度(OD)值,比较其根尖溢出碎屑的含量。采用SPSS 13.0软件包对结果进行统计学分析。结果:冲洗前、后的OD差值分别为对照组A组0.012、B组0.122、C组0.393、D组0.021,B、C、D 3组冲洗前、后的差值与对照组相比,均有显著差异(P<0.05)。其中,C组最高,与B、D 2组相比,均差异显著(P<0.05)。结论:冲洗液能增加根尖溢出碎屑的含量,2.5%Na Cl O冲洗液产生较多的根尖溢出碎屑,1%Na OCl、17%EDTA溶液是临床上较理想的冲洗液。PURPOSE： To compare the amount of debris extruded apically from root canals when different irrigants were used. METHODS： Fifty-eight extracted single-rooted human mandibular premolars with straight root canals were used. The teeth were randomly divided into control group （group A, n=7） and 3 experimental groups （group B,C,D,n=17）. All teeth were prepared for root canal therapy, and 3 different irrigants were used （group B： 1% sodium hypochlorite; group C： 2.5% sodium hypochlorite; group D： 17% EDTA）. Debris extruded from the apical foramen during root canal irrigation was collected into tubes and the amount of debris extruded was counted and analyzed. Statistical significance was assessed by Student-Newman-Keuls test with SPSS 13.0 software package. RESULTS： Group B, C, D had more amount of extruded debris, which was significantly different from the control group （P〈0.05）. Group C had the highest amount of extruded debris,which was significantly different from the other group （P〈0.05）. CONCLUSIONS： The type of irrigants used can affect the amount of apically extruded debris. 2.5% sodium hypocblorite can produce more apically extruded debris. 1% sodium hypochlorite and 17% EDTA are better than 2.5% sodium hypochlorite in terms of irrigation efficacy.

关 键 词：根尖溢出碎屑 冲洗液 次氯酸钠:EDTA 

分 类 号：R781.3[医药卫生—口腔医学]