正颌外科矫治下颌前突畸形的临床体会

Clinical Study on Orthognathic Surgery For Mandibular Prognathism

目的:总结正颌外科矫治下颌前突畸形的临床体会。方法:对6例下颌前突畸形患者进行了正颌外科矫治手术,其中5例行双侧改良式SSRO,1例行双侧改良式SSRO加LefortⅠ型截骨术。结果:经术后1～5年随诊观察,6例患者均取得满意疗效,获得协调的上下颌关系,1例畸形轻度复发。结论:下颌前突畸形患者采用双侧改良式SSRO,配合术前、术后的正畸治疗,能明显改善面部外形和咬牙合关系,改善咀嚼功能。

Objective：To Summarize our experience in orthognathic surgery for Correction of mandibular prognathism.Methods： 6 cases with mandibular prognathism underwent surgery treatment to move the mandibles back.5cases underwent bilateral modified sagittal split ramus osteotomy（SSRO）,1case underwent bilateral modified sagittal split ramus osteotomy（SSRO） and maxillary advancement lefort Ⅰ osteotomy.Results： with routinely follow-up ranging from 1 year to 5 years,6 cases acquired satisfied effect,gained coordinate maxillomandibular relation,1case mandibular prognathism slightly recurred.Conclusion： The clinical effect of bilateral modified sagittal split ramus osteotomy（SSRO） Combined with Pre-and post surgical orthodontic treatment for mandibular prognathism is successful,It is greatly improved the face type and dental articulation of all the patients,the masticatory function is also improved.