A Prosthodontist is one of the ten dental specialties recognized by the American Dental Association. Prosthodontics is the dental specialty pertaining to the diagnosis, treatment planning, rehabilitation and maintenance of the oral function, comfort, appearance and health of patients with clinical conditions associated with missing or deficient teeth and/or oral and maxillofacial tissues using biocompatible substitutes. A Prosthodontist has completed dental school and an additional three years of advanced training through an ADA-accredited graduate program.