Management of obstructive sleep apnea and facial asymmetry by distraction osteogenesis of mandible

ABSTRACT

Micrognathia and obstructive sleep apnea syndrome [OSAS] are problems subsequent to temporomandibular joint ankylosis [TMJa] in growing patients. For patients with micrognathia and OSAS secondary to TMJa, it is important to restore proper mandibular form and posterior facial height, achieve occlusal stability and satisfactory mouth opening. We report a 2-year follow-up of a patient with Micronesia and OSAS secondary to unilateral TMJ ankylosis of the right side. The patient had an operation of TMJa before she reported to us but mouth opening was limited. The treatment involved vertical ramus osteotomy, coronoidectomy and external distraction osteogenesis of her mandible. After the treatment of micrognathia oropharyngeal airway space was increased, patient was followed up for 2 years and the results remain uneventful