摘要
目的:比较不同冲洗液联合应用的根管超声冲洗效果。方法:选择根尖发育完成的单、直根管前磨牙30颗,随机分为3组,每组10颗。不锈钢K锉和逐步深入技术根管预备后,分别使用1%次氯酸钠,1%次氯酸钠+17%乙二胺四乙酸,1%次氯酸钠+10%枸橼酸进行根管超声冲洗。冲洗后纵向劈开标本,采用数码照相机照相和扫描电镜观察,分别计算比较根尖1/3区段和根中1/3区段根管内碎屑百分数牙本质小管开口数。结果:根管内碎屑百分数比较和扫描电镜研究结果:在根尖1/3区段和根中1/3区段,1%次氯酸钠冲洗组根管内碎屑百分数明显高于其他两组(P<0.05)。1%次氯酸钠冲洗组牙本质小管开口数明显少于其他两组(P<0.05)。其他两组比较,差异无统计学意义(P>0.05)。结论:两种冲洗液联合使用效果优于单一冲洗液。17%乙二胺四乙酸、10%枸橼酸与1%次氯酸钠联合使用效果相当。
Objective：To compare the effects of combining use of different irrigants in ultrasonic irrigation of root canal.Methods：30 recently extracted premolars with a single straight canal were selected and randomly divided into three groups,ten in each group.The canal preparation was performed with K file and the step-down technique.Each group was irrigated with 1% Naclo,1% NaOCL＋17% EDTA or 1% Naclo＋10% citric acid respectively.Then the sample was split longitudinally.Debris scores were calculated after photographing with a digital camera.And the number of visible open dentinal tubules was evaluated by SEM.Results：The score of percentage of remaining debris and scanning electronic microscope（SEM） study showed that both at apical third and middle third levels,the 1% Naclo group had significantly more debris than the other two groups（P0.05）.Compared among all the groups,the numbers of visible open dentinal tubules of group 1% Naclo in the middle third and in the apical third of root canals showed significantly less than that in other two groups（P0.05）.There was no difference between the other two groups（P0.05）.Conclusion：The combination use of two kinds of irrigants has better effect than the single irrigant.The combination use of 17% EDTA or 10% citric acid with 1% Naclo has the same effect.
出处
《现代医药卫生》
2011年第24期3693-3695,共3页
Journal of Modern Medicine & Health
