两种根尖定位仪测定根管工作长度的准确性比较  

Comparison of the accuracy of two apex locators in measuring root canal working length

作　　者：周娟[1] 许琼莉[1] 何今成[2] 谭雅琴[1] 胡孝丽[1] 

机构地区：[1]湖北医药学院附属太和医院口腔科,湖北十堰442000 [2]湖北医药学院图书馆,湖北十堰442000

出　　处：《海南医学》2015年第4期587-589,共3页Hainan Medical Journal

摘　　要：目的比较PropexⅡ和Raypex 5两种根尖定位仪测定根管工作长度的准确性。方法选取拟行根管治疗的患牙80颗,共135个根管,分别用PropexⅡ和Raypex 5两种根尖定位仪测定根管工作长度,记录数值,然后将扩大针按测得的工作长度插入根管内,拍摄牙片,运用Cliniview 5.0软件系统观察锉尖与根尖的关系,依据所得出的结果计算两种根尖定位仪的准确率。结果 PropexⅡ测定根管工作长度的准确率为91.1%,Raypex 5测定根管工作长度的准确率为92.6%,两者间的差异无统计学意义(P>0.05)。结论 PropexⅡ和Raypex 5两种根尖定位仪均能较准确的确定根管的工作长度,值得临床推广应用。Objective To compare the accuracy of PropexⅡ and Raypex 5 electronic apex locators in measuring root canal working length. Methods 80 teeth, with a total of 135 root canals, were selected to take the root canal therapy. The root canal working length was measured by PropexⅡ apex locator and Raypex 5 apex locator respectively, recorded the numbers, and then inserted the reamer into root canals according to the measured length, took x-ray dental film, observed the relationship between the root tip and tip of file using the cliniview 5.0 software. The accuracy rates of two apex locators were calculated basing on the results obtained. Results The accuracy rate of PropexⅡ apex locator in measuring root canal working length was 91.1%, while Raypex 5 apex locator was 92.6%, and there was no statistically significant difference between the two groups（P〉0.05）. Conclusion Both PropexⅡ apex locator and Raypex 5 apex locator could measure the root canal working length accurately, therefore are worth clinical popularizing and application.

关 键 词：根尖定位仪 根管治疗 工作长度 准确性 

分 类 号：R781.34[医药卫生—口腔医学]