唇腭裂正颌外科术前正畸治疗的临床研究

目的 以１６例唇腭裂修复术后重度性反Ｈｅ患者为例，对正颌外科术前正畸治疗的适应症、矫治时机等问题进行探讨。方法 选择１６例唇腭裂修复术后Ｈｅ患者，其中双侧腭裂６例，单侧腭裂１０例，采用方丝弓固定矫治器，配合使用四角腭弓等扩弓装置，开 颌牙弓，排齐上下牙列。结果 术前正畸治疗后，上下牙弓形态恢复正常，上下颌牙齿排列整齐，上下颌前牙去代偿，其正常轴倾度恢复。上牙弓宽度明显开展，上下牙弓宽度经模型拼对后协调。结论 术前正畸治疗是保证手术成功，防止术后复发的关键步骤，通过正畸与正颌外科联合治疗，不但可使患进的面型得到改观，也使Ｈｅ关系得到良好恢复。

Clinical study of preoperative orthodontic treatment for patients with cleft lip and palate

OBJECTIVE: To discuss the indication and time of preoperative orthodontic treatment for the patients with cleft lip and palate. METHODS: 16 cleft lip and palate patients (BCLP 6, UCLP 10) with severe cross-bite were selected. Edgewise appliance was used for the alignment and upper arch was expanded with quadhelix. RESULTS: After the orthodontic treatment, upper and lower arches were well aligned and the arch form was normal. Decompensation was achieved. Model surgery revealed that the upper and lower arches were harmonious. CONCLUSION: Preoperative orthodontic treatment is the key point to ensure the success of the surgery and to prevent relapse. Orthodontic/surgical approach can improve the patients' profile and function.