His specialization in Self-Care and Dental Aesthetics have made him one of the leading doctors in dental medicine. He speaks at several national and international conferences on the modern H4 Self-ligating system. Dr. Tomás Castellanos is a researcher and author of important techniques in the field of orthodontics and orthognathic surgery. He is also the Scientific Director of Dento-Maxillofacialspecialized in designing smiles of models, beauty queens, and political figures.