对于急性牙髓病及根尖病的治疗,过去一部分学者认为必须经过开髓开放这一过程才能封失活剂或根管封药。牙髓失活后再封一到两次药,才做充填。本文研究急性牙髓病和急性根尖病两次治疗法,比较两次法和多次法的临床疗效和术后反应情况,进行临床研究。1　资料与方法1.1　病例选择 For the treatment of acute pulp disease and root tip disease, some scholars in the past thought that it was necessary to go through the process of opening the pulp to seal off the active agent or root canal sealant. Dental pulp inactivated again after one or two drugs before filling. This paper studies the acute pulp disease and acute root tip disease twice the treatment, the two methods and multiple methods to compare the clinical efficacy and postoperative response, clinical research. 1 Materials and Methods 1.1 Case Selection