I have 44 years of experience in the field of orthodontics with specific knowledge of temporomandibular disorders, surgical-orthodontics, and acquired and congenital facial and jaw deformities. I have published on such topics as evaluation, diagnosis and planning of correction of dentofacial deformities, dento-facial radiology, and reconstruction of facial cleft and jaw deformities. I have testified on temporomandibular disorders, functional occlusion and facial and dental injuries.