摘要目的 探讨儿童恒前牙冠折后的治疗方法和治疗效果.方法 对不同受损程度的56例68个冠折恒前牙采取相应的治疗措施,并定期复查.结果 对10个单纯性釉质折断牙牙髓随访2年,成功率达100%;对27个牙本质折断但未露髓患牙治疗后2年成功率为81.4%,对31个牙本质折断并露髓患牙采取活髓切断术,其2年成功率为74.2%.结论 对损伤程度不同的冠折牙应采取不同的治疗方法;活髓切断术是年轻恒牙冠折露髓治疗的有效治疗措施.

abstractsObjective To study the treatment of anterior permanent teeth with crown fractures.Methods 68 anterior permanent teeth of 56 children were collected in this investigation.10 teeth with enamel fractures only were treated by mehtod of blunting the sharp fracture edges.27 teeth with dentin fractures,but without pulp exposure,were protected by calcium hydroxide.31 teeth with dentin fractures and with pulp exposure were treated by partial pulpotomy.Results 10 enamel factured teeth had vital pulp after two years retrospect.The success rate of calcium hydroxide placement group was 81.4%,that of the partial pulpotemy was74.2%.Conclusion Different types of crown fractures should be treated by different methods.Pulpotomy is a successful treatment method for crown fractures with pulp exposure.