种植牙机助拔和传统方法拔下颌阻生智齿干槽症发生率的比较研究

Comparison between Morbidity of Dry Socket Following Removal of Impacted Mandibular Third Molars with the Method of Conventional and Implantology Surgical Unit

目的比较种植牙机助拔和传统方法拔除下颌阻生智齿后干槽症的发生率。方法用自体对照法随机抽取种植牙机助拔下颌阻生智齿156例(翻瓣、去骨、挺出后缝合的方法)和传统拔除下颌阻生智齿107例(去骨、劈牙、挺出的方法)手术病例。统计2组干槽症的发生率。结果种植牙机拔牙组干槽症的发生率明显低于传统拔牙组干槽症的发病率。经统计学处理差异有统计学意义(P=0.013)。结论种植牙机助拔下颌阻生智齿与传统凿劈法相比,手术安全、快捷、创伤小,在预防干槽症的发生方面具有十分明显的效果。

Objective To study the different incidence of dry socket affer the third mandibular molars extraction using two different methods: implantology surgical unit and conventional method. Methods 156 patients were selected randomly, 156 impacted lower third molars on one side were removed with implantology surgical unit method; 107 lower 3rd molars on the other side by conventional chisel method (self control). The number of dry sockets were recorded. Results The incidence of dry socket in implantology surgical unit group was significantly lower than the conventional group. There were significant differenes between incidence of dry socket of the two methods (P=0.013). Conclusion The implantology surgical unit method is safer, more time-saving and less traumatic than the conventional chisel bone method. The study indicated the former is effective in dry socket prevention.