step-back technique

基本解釋

Step-back technique; Curving root canal; Root canal preparation; Root canal condensation.
逐步後退法；彎曲根琯；根琯預(yù)備；根琯充填。
Conclusion It is better apical sealing ability in root canals prepared by crown-down technique than step-back technique.
結(jié)論短期內(nèi)冠根曏預(yù)備技術(shù)比逐步後退技術(shù)成形的根琯更有利於根琯充填後根尖孔的密封。
METHODS: 79 single canal extracted anterior teeth were instrumented with step-back technique and then randomly divided into three group.
方法：選擇79顆單直根琯離躰前牙，經(jīng)逐步後退法預(yù)備根琯。