CAJ | 학술논문

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。
목적：비교PropexⅡ화Raypex 5량충근첨정위의측정근관공작장도적준학성。방법선취의행근관치료적환아80과，공135개근관，분별용PropexⅡ화Raypex 5량충근첨정위의측정근관공작장도，기록수치，연후장확대침안측득적공작장도삽입근관내，박섭아편，운용Cliniview 5.0연건계통관찰촤첨여근첨적관계，의거소득출적결과계산량충근첨정위의적준학솔。결과 PropexⅡ측정근관공작장도적준학솔위91.1%， Raypex 5측정근관공작장도적준학솔위92.6%，량자간적차이무통계학의의(P>0.05)。결론 PropexⅡ화Raypex 5량충근첨정위의균능교준학적학정근관적공작장도，치득림상추엄응용。
Objective To compare the accuracy of PropexⅡand Raypex 5 electronic apex locators in mea-suring root canal working length. Methods 80 teeth, with a total of 135 root canals, were selected to take the root ca-nal therapy. The root canal working length was measured by PropexⅡapex locator and Raypex 5 apex locator respec-tively, 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 ac-curacy rates of two apex locators were calculated basing on the results obtained. Results The accuracy rate of PropexⅡapex 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 PropexⅡapex locator and Raypex 5 apex locator could measure the root canal working length accurately, therefore are worth clinical popu-larizing and application.