根管治疗的成功与否,很大程度取决于对根管长度的正确估计。当进行根管预备时,不论是机械的或化学的方法,都应准确的估计根管的长度,才能既较彻底地清除根管中残余的感染组织,又不至于损伤根尖孔外的根尖周围组织。在进行根管充填时,要使根尖孔密闭而不留空隙,根管长度的测量,也是非常必要的。 The success of root canal therapy depends largely on the correct estimation of the length of the root canal. When performing root canal preparation, either the mechanical or chemical methods, the length of the root canal should be accurately estimated in order to both more thoroughly remove the residual infected tissue in the root canal without damaging the root of the apical foramen Tips around the organization. In the root canal filling, the apical hole to seal without leaving gaps, root canal length measurement, is also very necessary.