声波器械去除根管玷污层能力的比较研究  

The comparative study of sonic instrumentation capability on smear layer elimination in root canal preparation

作　　者：孙喆[1] 梁景平[1] 张岚[2] 

机构地区：[1]上海第二医科大学附属第九人民医院上海市口腔医学研究所,200011 [2]上海第二医科大学细胞生物学实验室,200025

出　　处：《牙体牙髓牙周病学杂志》2005年第7期382-386,共5页Chinese Journal of Conservative Dentistry

基　　金：国家"十五"科技攻关计划项目(2004BA720A23);上海市口腔医学研究所基金资助(院2003-13)

摘　　要：目的:比较声波、超声波和手用器械去除根管玷污层能力。方法:收集离体单根管的前磨牙40个,随机分为4组,分别由声波器械、超声波器械、手用器械以及声波和手用器械联合行根管预备,应用扫描电镜进行观察,采用Wilcoxon秩和检验进行统计学分析,根据根管表面的玷污层的量和牙本质碎屑比较声波器械去除根管玷污层的能力。结果:根尖1/3部分,在去除玷污层方面,声波器械组、超声波器械组以及声波器械和手用器械联合组,与手用器械组之间有显著性差异(P<0.05);在去除牙本质碎屑方面,超声波器械组与手用器械组之间亦有显著性差异(P<0.05),声波器械组以及声波器械和手用器械联合组与手用器械组之间有非常显著性差异(P<0.01)。声波器械组以及声波器械和手用器械联合组,与超声波器械组在去除玷污层和牙本质碎屑方面无显著性差异(P>0.05)。根中1/3和根上1/3部分,各组间比较均无显著性差异(P>0.05)。结论:根尖1/3根管预备,声波器械去除玷污层和牙本质碎屑的能力优于手用器械,尤其是去除牙本质碎屑的能力更强;与超声波器械近似。AIM:To compare the capability between sonic,ultrasonic and hand file instrumentation in root canal smear layer elimination.METHODS:40 abstracted premolars with single root canal were prepared by means of sonic,ultrasonic,hand file and combination of sonic and hand file instrumentation,and observing by the scan electron microscope.According to the amount of smear layer and dentinal debris in root canal,the cleanliness of root canal was analyzed by Wilcoxon rank sum test.RESULTS:In apical third,there was significant difference between sonic, ultrasonic,and combination of sonic and hand file instrumentation with hand file on smear layer and dentinal debris elimination,and no significant difference between sonic and combination of sonic and hand file instrumentation with ultrasonic instrumentation on dentinal debris elimination.In middle and coronal third, no statistical differences were observed among the four groups.CONCLUSION:In smear layer and dentinal debris elimination at root canal apical third,sonic instrumentation is better than hand file,especially in dentinal debris elimination,and similar to ultrasonic instrumentation.

关 键 词：声波 根管预备 玷污层 

分 类 号：R781.05[医药卫生—口腔医学] R780.2[医药卫生—临床医学]