ProPex根管测量仪测量磨牙牙齿操作长度准确性的临床评价

目的：评价分析ProPex根管测量仪测量磨牙牙齿操作长度的准确性.方法：选择116例根管治疗术的患者共130个磨牙383个根管,分为3组.A组：因根管欠充须再治疗者30个牙91个根管;B组：因修复治疗需要去髓术者46个牙130个根管;C组：慢性根尖周炎54个牙162个根管.以Propex测量牙齿操作长度.按此长度预备并充填根管,即刻拍摄X线片,观察并测量根管充填情况.结果：ProPex测量磨牙牙齿操作长度的准确率：A组86.8%,B组96.2%,C组85.8%.结论：ProPex可以比较准确地测量磨牙牙齿操作长度.

Clinical evaluation on accuracy of a new apex locator-ProPex in molar working length measurement

AIM:To evaluate and analyze the accuracy of a new apex locator-ProPex in molar working length measurement.METHODS:Three hundred and eighty three root canals from 116 patients(130 molars) were divide into 3 groups:group A(91 root canals from 30 molars) which needed retreatment because of underfilling;group B(130 root canals from 46 molars) which required intentional pulpectomy because of restorative and fixed prosthetic reasons;group C(162 root canals from 54 molars)which was undergoing chronic apical periodontitis.Working length of each root canal was measured by ProPex,and instrumentation and obturation were performed according to the working length.RESULTS:The accuracy of ProPex in molar working length measurement in the 3 groups was 86.8%,96.2% and 85.8%.CONCLUSION:ProPex is relatively accurate in molar working length measurement.