唇腭裂患者在生长发育期,常可观察到上颌骨矢状向、横向和垂直向等三维方向的发育障碍,其牙弓形态往往表现为上牙弓狭窄等,尤以完全性唇腭裂患者为严重。上颌骨扩弓成为唇腭裂患者正畸治疗的重要步骤,扩弓方法根据不同需要进行选择。本文分别从各类扩弓方式、年龄和牙弓形态等方面,讨论其对单侧完全性唇腭裂患者扩弓稳定性的影响。 Cleft lip and palate patients often observed in the growth and development of the maxillary sagittal, transverse and vertical direction of the development of three-dimensional obstacles to the development of the dental arch morphology is often the upper arch stenosis, etc., especially in patients with complete cleft lip and palate is serious. Maxillary expansion has become an important step in orthodontic treatment of patients with cleft lip and palate, and the method of expansion is selected according to different needs. In this paper, we discuss the effects of arch expansion on the stability of unilateral complete cleft lip and palate patients from various aspects of arch expansion, age and dental arch morphology.