本文选7～14岁儿童的年轻恒牙101只,分成三组,作活髓切断后,分别以羟磷灰石、羟磷灰石碘仿和氢氧化钙糊剂复盖牙髓断面。经复查其疗效分别为36.1％,81.8％和84.4％,结果表明。单纯的羟磷灰石虽有良好的生物相容性和硬组织修复能力,但远不如羟磷灰石碘仿的疗效,提示我们,若以羟磷灰石作为盖髓剂,应加入少量抗菌药物为宜。 In this paper, 101 young permanent teeth aged 7 ~ 14 years old children were divided into three groups, after the pulp was cut off, respectively, hydroxyapatite, hydroxyapatite iodoform and calcium hydroxide paste to cover the pulp section. After review of its efficacy were 36.1%, 81.8% and 84.4%, the results show. Although pure hydroxyapatite has good biocompatibility and hard tissue repair ability, but far less than the efficacy of hydroxyapatite iodoform, suggesting that if hydroxyapatite as a capping agent, should be added to a small amount of antibacterial Drugs are appropriate.