3种根测仪测量根管工作长度准确性的比较  

An evaluation of three electronic apex locators on measuring root canal working length in vivo

作　　者：魏雪[1] 李袁媛 张国琴 钟晓波[1] 齐进[1] 

机构地区：[1]重庆医科大学附属口腔医院牙体牙髓科,重庆400015 [2]重庆市高校市级口腔生物医学工程重点实验室,重庆400015 [3]口腔疾病与生物医学重庆市重点实验室,重庆400015

出　　处：《暨南大学学报（自然科学与医学版）》2016年第6期509-512,共4页Journal of Jinan University(Natural Science & Medicine Edition)

基　　金：重庆市卫生局医学科研项目(2012-2-138)

摘　　要：目的:比较研究propexⅡ根管长度测量仪、raypex5根管长度测量仪和raypex6根管长度测量仪测量根管工作长度的准确性.方法:选牙体牙髓科就诊患者的165个根管随机分成propexⅡ组、raypex5组和raypex6组,每组各55个根管.患牙开髓后疏通根管,以上3组分别使用propexⅡ、raypex5和raypex6根管长度测量仪测量根管工作长度.然后,每个根管按照各自测量的工作长度用Protaper器械根管预备至F2,选取主牙胶尖插入根管达工作长度,拍摄X线片,通过PACS软件量取牙胶根尖到牙根根尖的距离,测量3次,取平均值,并进行单因素方差统计分析.结果:在本实验研究中,propexⅡ组恰填率为96.36%,raypex5组恰填率为94.54%,raypex6组恰填率为96.36%.3组牙胶根尖到牙根根尖的距离无统计学差异(P=0.593>0.05).结论:PropexⅡ、Raypex5和Raypex6根测仪测定根管工作长度均具有较高的准确率,3者之间无显著差别.Aim ： To compare the accuracy of propexⅡ , rapex5 and rapex6 electronic apex locators measuring the root canal working length. Methods ： 165 root canals of patients were randomly divided in -to three groups in this study ： propexⅡ group, raypex5 group and raypex6 group, and each group has 55 root canals. Teeth were respectively assessed for root canal working length by electronic apex locators, af-ter pulp exposure and removed. Root canals were instrumented to a size protaper F2 nickel titanium file . Master gutta-percha point was inserted in to the root canal of the working length and shooted X - ray. And the distance of the apical of gutta-percha to the root apical was obtained by PACS software, measured three times and averaged, then analysis of Variance. Results ： In this study, the accuracy of propexⅡ group, raypex5 group and raypex6 group was respectively 96. 36 % , 94. 5 4 % , 96. 36 % . And the dis-tance of the tip of gutta-percha po in t to the root apex has no stat ist ical significance （ P =0. 593 〉0. 05） in these three groups. Conclusion ： PropexⅡ, raypex5 and raypex6 electronic apex locators can determine working length with high accuracy, and have no significant difference.

关 键 词：propexⅡ raypex5 raypex6 根管工作长度 

分 类 号：R781.3[医药卫生—口腔医学]