摘要
目的:比较不同浓度次氯酸钠溶液的根管冲洗效果。方法:选择根尖发育完成的单、直根管前磨牙50颗,随机分为5组,每组10颗。不锈钢K锉和逐步深入技术根管预备后,分别使用蒸馏水,0.5%、1%、2%或5.25%次氯酸钠进行根管超声冲洗。采用数码照相机照相和扫描电镜观察,分别比较根尖1/3区和根中1/3区根管内的碎屑百分数和牙本质小管开口数。结果:蒸馏水组在根尖和根中1/3区的碎屑百分数明显高于其他4组,牙本质小管开口数明显少于其他4组;去除蒸馏水组后,0.5%次氯酸钠组在根中1/3区的碎屑百分数明显高于其他3组,牙本质小管开口数明显少于其他3组。结论:4种不同浓度次氯酸钠溶液的根管冲洗效果均好于蒸馏水;0.5%次氯酸钠根管冲洗的效果比其他3种较高浓度的次氯酸钠差。
Objective： To compare the debridement capabilities of several concentrations of sodium hypochlorite. Methotis： Fifty recently extracted premolars with a single straight canal were selected and randomly divided into five groups. After instrumented with step - down technique, the canals were received ultrasonic irrigation with either distilled water, 0. 5%, 1%, 2% or 5.25% NaOCL. Debris scores were calculated after photographing with a digital camera and the number of visible open dentinal tubules was evaluated by SEM. Results： The distilled water showed significantly more debris and less visible open dentinal tubules than the other groups at apical third and middle third. When compared four concentrations of NaOCL, 0.5% NaOCL showed significantly more debris and less visible open dentinal tubules than the others at middle third levels. Conclusion： The efficacy of NaOCL for root canal irrigation may be greater than distilled water, and 0.5% NaOCL was less efficient than other three concentrations of NaOCL.
出处
《口腔医学研究》
CAS
CSCD
2007年第4期388-390,共3页
Journal of Oral Science Research
基金
湖北省科委创新群体基金(编号:2004ABC004)
关键词
超声冲洗
次氯酸钠
碎屑
Ultrasonic irrigation Sodium hypochlorite Debris
作者简介
谭青松（1974～），女，湖南人，医师，硕士，主要从事牙体牙髓病临床研究。
通讯作者彭彬，E-mail：phs301@vip．163．com
