坏死牙髓根管治疗期间急症的临床相关因素分析

目的 评价坏死牙髓根管预备后发生根管治疗期间急症(IAE)的临床相关因素。方法 统计351颗死髓牙根管预备后IAE的发生率，并就性别、年龄、牙位、根尖周损害、术前疼痛不适等因素在IAE发生中的特点进行分析。结果 IAE发生率为27．64％，女性较男性容易发生；40～59岁IAE发生率最高：上磨牙IAE发生率最高，上前牙最少；有术前疼痛不适症状的容易发生。结论 根管预备中除了严格遵循操作常规，还应重视性别、年龄、牙位、术前疼痛不适在IAE发生中的特点及规律。

An analysis of the relative clinical factors of incidence of endondontic interappointment emergencies of nonvital teeth after root canal preparation

Objective To evaluate the relative clinical factors of endondontic interappointment emergencies of nonvital teeth after root canal preparaion. Methods The IAE incidence of 351 nonvital teeth after root canal preparation was investigated, sex ,age,teeth position ,periradicular lesion,symptomatic teeth were also analyzed. Result The IAE incidence was 27.64%,female or symptomatic teeth predispose to higher incidence of IAE, 40-59 year old persons and maxilary molars had the highest incidence, maxilary anterior teeth the lowest. Conclusion Besides keeping to operation regulation strictly, we must also pay much attention to the characteristics and regularity of sex,age,teeth position, symptomatic teeth in terms of the incidence of IAE.