Peripheral osteoma of the mandibular condyle. 
A rare case of peripheral osteoma, which developed in the right mandibular condyle of a 27-year-old man, is presented.  Condylectomy with reconstruction of the condyle using a rib graft and subsequent mouth opening exercise as well as orthodontic treatment were performed.  Occlusion disharmony and facial asymmetry were substantially improved, with no sign of recurrence two years after surgery.  Long-term post-operative care of mouth opening exercise is highlighted.  Orthodontic treatment is also indicated for better results on occlusal function and facial appearance.  Therefore, a team composed of interdisciplinary specialists such as dentist, oral & maxillofacial and chest surgeons is indispensable to successful treatment.