自从Lakshmanan[1]报告了用空管药物疗法治疗根尖周病后,进行了广泛研究,提供了大量科学依据。我们将此方法应用到乳牙根尖周病的治疗上,观察到确有很多优点,现报告如下:1　临床资料1.1　一般资料:本组患儿730例,包括乳牙急、慢性根尖周炎,牙髓坏死。年龄在6岁～10岁,前牙102例 Since Lakshmanan [1] has reported extensive use of empty tube drug therapy for the treatment of periapical periodopathy, it has provided a great deal of scientific evidence. We apply this method to the treatment of primary apical periodontal disease, the observed indeed many advantages, are as follows: 1 Clinical data 1.1 General information: The group of 730 patients, including deciduous teeth, chronic apical periodontitis, Pulp necrosis. Aged 6 to 10 years old, 102 cases of anterior teeth