拔牙是口腔颌面外科门诊中最多的一种手术。关于拔牙的原因,国内文献虽有过记载,但未能反映出解放以来我国口腔医学水平的提高。为了了解北京地区口腔医学治疗的水平,北京口腔医院口腔颌面外科门诊在1981年7月～1982年4月,对9818名有龋齿、牙周病、冠周炎、埋伏齿、义齿、正畸以及其它(包括多生牙、滞留、创伤、错位、 Tooth extraction is the largest type of surgery in oral and maxillofacial surgery. On the reasons for tooth extraction, although documented in the domestic literature, but failed to reflect the liberation since the improvement of stomatology in our country. In order to understand the level of dental treatment in Beijing, Beijing Stomatology Hospital, oral and maxillofacial surgery clinic in July 1981 ~ April 1982, 9818 patients with dental caries, periodontal disease, pericoronitis, ambush, denture, orthodontics As well as other (including polygamy, detention, trauma, dislocation,