反颌患者由于下前牙位于上前牙唇侧,因而导致上颌骨发育受阻,使得上牙弓长度不足及下牙弓长度相对过长。我们采用非拔牙法矫治反颌伴拥挤病例,在开拓间隙排齐上牙列的同时,前牙向唇侧进行漂移,从而增加了上牙弓长度,反颌也得到了改善或解除。从而避免了拔牙法矫治反颌所导致的 Anti-jaw patients due to the lower anterior teeth located in the upper lip side, which led to the development of maxillary obstruction, making the length of the lower dental arch and lower dental arch length is relatively long. We use non-extraction method to treat the cases of crowding with anti-jaw companion. While expanding the gap, the anterior teeth are drifted to the labial side, which increases the length of the upper dental arch. The anti-jaw has also been improved or released. Thus avoiding the extraction of teeth correction method caused by anti-jaw