应用根尖电测仪测定根管长度准确性评定

Assessment of accuracy of determine root canal length by apex-locator

目的 评定JUSTY II型全自动根尖电测仪在根管工作长度测定中的准确性。方法 选择 80例病牙 ,12 0个根管 ,采用全自动根尖电测仪对根管工作长度进行测定 ,并与插针X线摄片法进行对比。结果 根尖电测仪测定根管工作长度的准确率为 89.17%,插针X线摄片法测定根管工作长度的准确率为34 .17%,二组有显著性差异 (P <0 .0 1)。结论 应用全自动根尖电测仪测定根管工作长度具有准确性高 ,减少患者X线损害 。

Objective To Assess the accuracy of determining root canal length by Justy II full auto root apex locator made by Toei Electric Co. Ltd. Japan.Methods 80 cases and 120 root canals were selected, root canal lengths were determined by apex locator and comparing accuracy with reamer x ray. Results accuracy rate of determining root canal length by apex locator was 89.17% and with reamer x ray was 34.17%. There was significant difference between the two groups ( P <0.01).Conclusion determining root canal length by full auto apex locator could attain good accuracy, reduce x ray harm to patients, increase success rate of root canal treatment and decrease clinical time.