Ｘ线观察一次根充治疗有瘘型慢性根尖周炎高旭①孙妙果②慢性根尖周炎有瘘型的治疗，常常是先根管反复换封药，直至瘘管消失、叩疼消失，封药捻无渗出才能根充，此法需反复多次换药，疗次多。本研究通过对患牙做一次性根管充填，不对瘘管做任何特殊处理，观察根充后瘘孔愈... X-ray observation of a root canal treatment of fistulous chronic apical periodontitis Gao Xu ① Sun Miao Guo ② chronic periapical fistula treatment, often the first root canal repeatedly sealant, until the fistula disappears, knock pain disappear, seal drug twisting No exudation in order to root filling, this method needs repeated dressing change, treatment times. This study made a one-time root canal filling of the affected teeth, do not do any special treatment of fistula to observe the fistula hole after root filling ... more ...