Improvement of a condylar positioning system for the mandibular ramus sagittal split osteotomy

Mandibular ramus sagittal split osteotomy is widely used for the treatment of dentofacial deformities of the mandible. The condylar position after this operation is thought to have a great influence on the occurrence of short-term relapse and/or temporomandibular joint disorders. ~3 Therefore, it is very important that the condyles remain in their planned position after the operation. A technique that can be used to keep the condyles in position involves fixing each proximal segment to an upper molar with a positioning plateJ We have improved this system by adding a prefabricated orthodontic face bow. This method shortens the operation time and results in accurate condylar positioning.