扩大牙弓是正畸中常用的矫治手段,如果不做辅助装置,两侧扩大牙弓的宽度基本相等。但是,对于单侧后牙反之类的错畸形,则需要采取非对称性扩大牙弓,使得患侧得到矫治而健侧保持原有宽度。本文就非对称性扩大上颌牙弓的各种临床矫治方法作一综述。 Enlarge the dental arch orthodontics is commonly used in orthodontic treatment, if you do not do ancillary devices, the width of both sides of the enlarged dental arch is basically the same. However, for one-sided posterior teeth such as inverted  malocclusion deformity, you need to take the asymmetric expansion of the dental arch, making the affected side to be corrected while maintaining the original side of the width of the contralateral. This article reviews the various methods of clinical treatment of maxillary dental arch asymmetrically.