正畸和正颌手术联合矫治下颌前突畸形

【目的】探讨正畸和正颌手术联合矫治下颌前突畸形对于提高矫治效果及稳定性的临床意义。【方法】对21例下颌前突畸形患者进行术前正畸—正颌手术—术后正畸模式的矫治过程，并与同期29例单纯正颌手术病例比较，观察矫治后的颌面外形，咬合关系及疗效稳定性。【结果】正畸和正颌手术联合矫治组治疗后咬合关系良好，咀嚼功能改善率为81.0%（17/21），畸形复发率为4.8%(1/21)；单纯正颌手术组咀嚼功能改善率为58.6%（17/29），畸形复发率为10.3%(3/29)。【结论】正畸和正颌手术联合矫治下颌前突畸形是提高矫治效果，达到颌、平衡及减少畸形复发的理想方法。

Correction of Mandibular Protrusion by Using both of Orthodontics and Orthognathic Surgery

Objective To study the clinical results and stability after correction of mandibular protrusion by using both of orthodontics and orthognathic surgery. Methods A group of 21 patients with mandibular protrusion were corrected by preoperative orthodontics orthognathic surgery postoperative orthodontics procedure. As a control ,another group of 29 patients with deformities were corrected by orthognathic surgery only. The facial appearance, occlusion and stability of two groups after correction were investigated and compared. Results In orthodontics and orthognathic surgery group 81 0% of patients declared that their mastication were improved . Relapse rate of deformities was 4 8%;In orthognathic surgery group 58 6% of patients declared that their mastication were improved . Relapse rate of deformities was 10 3%. Conclusion Using both of orthodontics and orthognathic surgery to correct mandibular protrusion is a good approach to improve results of correction, keep balance of occlusion and reduce the relapse of the deformities.