METHODS:This study included 223 primary teeth which were divided into 3 groups. Group A was filled with(Ca(OH)_2)-ZOE paste,group B with Ca(OH)_2 paste,and group C with ZOE paste.

• 方法:用3种根管充填材料对223个乳磨牙进行根管充填治疗,试验组用氢氧化钙-ZOE糊剂根管充填(A组),对照组用氢氧化钙糊剂(B组)和ZOE糊剂(C组)根管充填,观察6个月后的疗效。