A specialist in the diagnosis, prevention and treatment of dental and facial irregularities. Orthodontists are required to complete college requirements, graduate from an accredited dental school and successfully complete a minimum of two academic years of full-time, university-based study at an accredited orthodontic residency program. Only those who have completed this education may call themselves “orthodontists.” Orthodontists limit their practice to orthodontic treatment only unless they have training in another dental specialty. Only residency-certified orthodontists may be members of the American Association of Orthodontists.