关键词: 非常规拔牙, 矫治治疗, 个性化

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