活髓切断术应用于龋源性露髓恒牙的初步研究

［摘要］目的 将活髓切断术应用于牙根已经发育完成的龋源性露髓恒牙，随访观察其临床疗效，为其应用于临床提供一定的理论指导。方法 收集龋源性露髓且牙根发育完成的患牙63例，其中行活髓切断术组为实验组（30例），行根管治疗术组为对照组（33例），术后分别于3、6、12、24个月进行复诊，通过临床评估及影像学评估来评价治疗效果，并进行比较，采用SPSS 18.0软件进行统计分析。 结果 观察3、6、12、24个月，活髓切断术组的成功率分别为100%、 96.67%、96.67%、93.33%，根管治疗术组的成功率分别为100%、100%、96.97%、96.97%，两组成功率无统计学差异（χ2=0.010， P=0.601）。 结论 活髓切断术可以应用于龋源性露髓的成熟恒牙并取得较高的成功率，是除根管治疗术以外可供选择的另一种较好的治疗方法。

A preliminary study of pulpotomy in cariously exposed permanent teeth

Objective To apply pulpotomy into 30 permanent teeth with cariously exposure and observe the two-year clinical effect to provide theoretical guidance for its application in clinic. Methods　Sixty-three cariously exposed permanent teeth with closed apices and vital pulps were included. Moreover, preoperative pulpal and periapical diagnosis was conducted. The teeth were divided into two groups, in which the experimental group was treated with pulpotomy (30), and the control group was treated with one-visit RCT (one-visit root canal therapy) (33). Subsequent visits were conducted 3 months, 6 months, 12 months, 24 months after operation. Then therapeutic effects were assessed through clinical and radiographic evaluation. All statistical analysis was performed using the SPSS 18.0 statistical package. Results　The success rates of pulpotomy group in 3 months, 6 months, 12 months, 24 months were respectively 100%, 96.67%, 96.67% and 93.33%, while the success rates of root canal therapy were respectively 100%, 100%, 96.97% and 96.97%.There were no significant differences between pulpotomy and RCT(χ2=0.010，P=0.601) in the success rate. Conclusions　This therapy can be applied to the mature permanent teeth of carious pulp and achieve high success rate, which is expected to be an alternative treatment for root canal therapy.