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目的探讨肌功能训练在辅助安氏II类1分类患者正畸疗效维持过程中的作用。方法选择20例安氏II类患者,每组10例。A组:Hawley保持器+肌功能训练;B组:单纯使用Hawley保持器。对矫治前、矫治完成当日及保持1年的头颅侧位片进行头影测量分析及模型分析。结果保持1年后,两组患者都有复发倾向,但辅以肌功能练组(A组)ANB、Wits值、FCA及拔牙间隙相较对照组明显减小,实验组术后复发程度较小且有靠近正常值的趋势。结论肌功能训练能有效辅助安氏II类1分类患者正畸疗效的保持。
Objective To explore the role of muscle function training in the maintenance of orthodontic efficacy in patients with Class Ⅱ division 1 malocclusion. Methods Twenty cases of Class II patients were selected, with 10 cases in each group. Group A: Hawley holder + muscle function training; Group B: Hawley holder alone. Cephalometric analysis and model analysis were performed on the cephalometric slices before correction, on the completion date of orthodontic treatment and for one year. Results After 1 year of maintenance, both groups had a tendency to relapse, but the ANB, Wits, FCA and tooth extraction gaps were significantly reduced in group A (group A), and the postoperative recurrence was less in experimental group And close to the normal trend. Conclusion Muscle function training can effectively support the maintenance of orthodontic effect in Class Ⅱ division 1 patients.