2001•Journal of Sun Yat-sen UniversityRequires access
Correction of Mandibular Protrusion by Using both of Orthodontics and Orthognathic Surgery
Rong Zeng, Xiaoping Yang, Wang Da-w
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Abstract
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.