Methods:To fill the root canal of the primary teeth using two different materials, the experimental group was filled with Vitapex paste , the control group was filled with ZOE iodoform paste.

• 方法 :用两种根管充填材料对乳磨牙进行根管充填 ,实验组用 Vitapex糊剂根管充填 ,对照组用氧化锌碘仿糊剂根管充填 ,观察 1年后的疗效。