The purpose of tooth extraction treatment is to coordinate the inconsistency between tooth quantity and bone quantity. The most fundamental reason of malocclusion is that the space of alveolar bone is not enough to accommodate all the existing teeth. Tooth extraction treatment can not only better match the tooth quantity and bone quantity, but also make the treatment result more stable. Moreover, the oriental facial features are that the nose is not straight enough, the lips protrude forward, and the chin development is not as good as that of westerners. In order to achieve a better face shape, about 60% patients need tooth extraction correction.

After orthodontics, the teeth are arranged neatly and the oral system will be healthier. Therefore, orthodontic tooth extraction is beneficial to patients.