下颌低位水平埋伏阻生牙两种拔除方法的比较研究

A clinical study of two approaches in removal of impacted mandibular third molars

目的：比较传统两段式横断法和改良两段式横断法在下颌低位水平埋伏阻生牙拔除中的临床效果，评价改良两段式横断法的优越性。方法：收集2011年8月～2012年9月行下颌低位水平埋伏阻生智齿拔除120例，随机分成两组，每组60例。对照组采用传统两段式横断法，治疗组采用改良两段式横断法。比较两组拔牙时间、术后24 h疼痛程度，两组之间差异有无统计学意义。结果：运用改良两段式横断法拔除下颌低位水平阻生智齿，手术创伤小、术后并发症少、手术时间短，与传统的两段式横断法相比有较好的临床疗效，组间比较差异有统计学意义（P＜0．05）。结论：在拔除下颌低位水平埋伏阻生智齿时，改良两段式横断法可以有效缩短手术时间、减小创伤，与传统的两段式横断法相比具有较好的临床疗效。

Objective：To compare the effects on adjacent teeth of traditional two-section method and reformative two-section method in removal of impacted mandibular third molars , To evaluate the superiority of the reformative two-section method. Method：120 impacted mandibular third molars to be selected were randomly assigned to two treatment groups ：one group（control group） received traditional two-section method,while the other（test group） received reformative two-section method. Then both the duration of the extraction and complications （pain of 24 h postoperative. swelling.） were observed and compared. Result：The data showed that duration of extraction of the test group was shorter than the control group. The occurence of 24 h postoperative pain had statistical difference between the two groups （P ＆lt;0.05）. Conclusion：Compared with traditional two-section method,reformative two-section efficiently reduce the incidence of postoperational reaction,It is recommendable in clinical practice.