Mandibular distraction osteogenesis in an adult with severe mandibular retrognathia with arthrosis deformity: A 10-year follow-up

The objectives of this case report are to show how to select the treatment plan for severe mandibular retrognathia and to show the long-term retention follow-up.An adult female with severe retrognathia that might have been caused by arthrosis deformity of the mandibular condyles, was treated with distraction osteogenesis (DO). After presurgical orthodontic treatment, DO was performed to lengthen the retruded mandible. Le Fort I osteotomy and genioplasty were performed to establish functional occlusion and correct her long face, after 5 months of DO. After postsurgical orthodontic treatment, the patient's occlusion had improved markedly, and she exhibited significant aesthetic improvement. Her profile and acceptable occlusion remained stable after 10 years of retention.