Jaw fractures in Malmö 1952-62 and 1975-85.

The aim of this study was to compare frequency, etiology and location of jaw fractures in Malmö during the periods 1952-62 and 1975-85. The following statistically differences were found. The number of patients with jaw fractures increased from 1 to 2 per 10,000 inhabitants and year.

Sagittal split osteotomy in our experience. A follow-up study of 100 operated patients.

Sagittal split osteotomy is a tricky and time-consuming operation but gives excellent mobilization of the mandibular body for the purpose of positional changes. A follow-up study of 100 operated patients up to 3 years and more has demonstrated good and stable occlusion and subjective appraisal of improvement in appearance and bite. Negative effects of the operation are injuries to the inferior avleolar and lingual nerves.

Sagittal splitting of the mandibular ramus. Electromyography and radiologic follow-up study of temporomandibular joint function in 44 patients.

A follow-up study was performed on 44 patients operated with sagittal splitting of the mandibular ramus for correction of a mandibular protrusion. The study included clinical examination, electromyography and masticatory efficiency test as well as radiography of the temporomandibular joint. The maximum opening capacity and protrusion of the mandible decreased one to three years after the operation.