摘要目的 分析改良下颌升支矢状劈开术(sagittal split ramas osteotomy,SSRO)临床运用的情况,探讨其在正颌外科广泛应用的可能性.方法 195例患者利用SSRO矫正下颌骨畸形,其中90例采用SSRO传统术式,105例采用改良SSR0,将颊侧垂直骨切口移至颏孔区.结果 所有患者治疗效果良好,并发症与传统方式无明显差异.结论 SSR0改良方式的目的 是增大骨段的接触面积和减少手术创伤.颊侧截骨线前移至颏孔区,接触面积得到较大幅度的增加,有利于骨创伤的固定和愈合.同时,通过手术中细致操作,可以有效防止神经损伤等手术并发症的发生.

abstractsObjective To explore a method of modified technique of sagittal split ramus osteotomy (SSRO) and to study the possibly more appropriate and effective methods for correction of mandibular de-formity. Methods 195 patients suffering from mandibular anomaly or accompanied by other deformities have been operated on by the modified or classical technique of SSRO. Results In the group of 105 cases treated by modified SSRO and the group of 90 classical SSRO, all the patients acheived excellent results. There was no statistic significance between the two groups. No complications occured, such as postopera-tive relapse, significant bleeding, postoperative infection, and others. Conclusion Since modified tech-nique of SSRO has more advantages than conventional classical technique, such as more area of bony con-tact, shorter-time operation, easier process: it is the preferred method for the correction of mandibular deformity. Accompanied by regularity and in time pre- and post-operational orthodontic therapy, it will be more widely used in the future.