Long term follow-up of the sagittal splitting technique for correction of mandibular prognathism.
In a study of 67 cases the authors have investigated clinically and radiologically the long term results (5 years and over) of the sagittal split technique (Obwegeser 1955, 1957). Although 95% of the patients are satisfied, 60% have some impairment of sensation in the lower lip. This however goes unnoticed in 40% of these cases. The temporo-mandibular joint does not appear to be affected. 73% of the patients have excellent or good occlusion, while 18% have an unsatisfactory anterior occlusion due to some degree of relapse. The remaining 9% have poor occlusion without sign of relapse. A statistical analysis of the teleradiographs reveals that relapse is due to a rotation of the body of the mandible. Since several changes in technique have meanwhile been adopted, this paper will be followed by an analysis of the more recent cases.
D000293:Adolescent; D000328:Adult; D002508:Cephalometry; D003258:Consumer Behavior; D005069:Evaluation Studies as Topic; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging / Q000601:surgery*; D010027:Osteotomy; D011378:Prognathism / Q000601:surgery*; D011859:Radiography; D012677:Sensation; D013704:Temporomandibular Joint / Q000502:physiology