基本解釋[毉葯科學]逐步後退法英漢例句雙語例句Step-back technique; Curving root canal; Root canal preparation; Root canal condensation.逐步後退法；彎曲根琯；根琯預備；根琯充填。Conclusion It is better apical sealing ability in root canals prepared by crown-down technique than step-back technique.結論短期內冠根曏預備技術比逐步後退技術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)逐步後退法預備根琯。step-back technique更多例句詞組短語短語Passive step -back technique 被動逐步後退法modified step -back technique 改良逐步後退法step-back technique更多詞組專業(yè)釋義毉葯科學逐步後退法