[Modified sagittal osteotomy of the ascending ramus for treatment of prognathism]

A retrospective study of 331 orthognatic interventions on the mandible was performed; a total of 528 osteotomies were practiced, on which personal modification of the intraoral sagittal technique of the ascending branch of the mandible was implemented on 134 patients, both pediatric and adult, within the period 1983-1988. This paper describes surgical technique and modifications to Obwegesser's sagittal osteotomy, as well as the advantages gained by such procedure, which the author considers ideal for the reduction of mandibular prognatism in its four variants.