作者应用自动根管探示系统沿根管内折断器械或银尖周围形成旁道,拉锉使碎片或银尖松动的方法,从50个根管试取折断的器械碎片,15个器械碎片全取出,11个碎片经旁道取出。又从38个根管内试取40支银尖,18支顺利取出,2支经旁道取出。此结果表明应用根管 The authors used automatic root canal exploration system along the root canal broken instruments or around the silver tip to form a bypass, pull the file to pieces or silver tip loosening method, from 50 root canal test broken device fragments, 15 pieces of equipment Remove, 11 debris removed by the bypass. In addition, 40 silver tips were tested in 38 root canals, 18 were taken out smoothly and 2 were taken out by the bypass. This result indicates the use of a root canal