随着人们对乳牙功能及重要性的认识，保存乳牙牙列的完整已越来越受到人们的重视。本文采用复合氢氧化钙糊剂一次性治疗乳牙慢性根尖周炎，现将一年的疗效报告如下。临床资料１－一般资料：本组病例均为乳牙慢性根尖周炎（包括有瘘型）共４２人，４８颗患牙，近期无急性发作。 With people's understanding of the function and importance of deciduous teeth, the preservation of the completeness of the deciduous dentition has drawn more and more attention. In this paper, a single calcium hydroxide compound paste treatment of chronic apical periodontitis, the efficacy of the year are reported below. Clinical data 1-General information: This group of patients were chronic decidua periapical period (including fistula type) a total of 42 people, 48 teeth, no recent acute attack.