Abstract:

 In clinical work， it's common to meet patients treated by extracting teeth， most of which are the four first premolars. But for patients with  severe tooth cavities，tooth trauma，impacted tooth and tooth deformity et al， they can't be treated by this orthodontic extraction mode. In principle any tooth can be extracted， but in clinical work， the malocclusion ，space and tooth with special conditions should be considered. This review attempts to address the clinical application of unconventional tooth extraction in orthodontic treatment.

Key words: unconventional extraction, orthodontic treatment, individualized

摘要：

在正畸临床中，有很大比例的患者需要减数拔牙矫治，常见的减数方案为拔除上下左右的同名前磨牙，但当患者存在严重的龋坏牙、牙外伤、埋伏阻生牙或者畸形牙时，首先要考虑拔除这些牙齿。原则上，任何牙齿都可能成为减数对象，但在临床设计时， 应结合患者的错牙合类型、牙齿所能提供的间隙及牙齿的健康状况等进行综合考虑。本文对正畸临床中非常规拔牙矫治做一综述。

关键词: 非常规拔牙, 矫治治疗, 个性化