Simultaneous mandibular margin resection and sagittal split ramus osteotomy for correction of osseous crossbite occlusion with large prominent mandible

Objective To Summarize our experience in orthognathic surgery for Correction of mandibular prognathism.Methods 12 cases with prognathism and large prominent mandibular underwent mandibular margin resection and bilateral modified sagittal split ramus osteotomy(SSRO).Results with routinely follow-up ranging from 1 year to 2 years,all cases acquired satisfied effect,gained coordinate maxillomandibular relation,the lower facial greatly improved.Conclusion The clinical effect of mandibular margin resection and sagittal split ramus osteotomy combined with Pre-and post surgical orthodontic treatment for prognathism with large prominent mandibular is successful,the risk of operation and complications are reduced,It is a useful modification of the conventional BSSRO,greatly improved the articulation function and face type of all the patients,also obtained plastic surgery esthetic results.