Orthodontists correct crowded or crooked teeth, as well as overbite and under bites using braces to improve the function and cosmetic appearance of teeth. Pediatric dentists diagnose and treat dental problems in children, as children may need special procedures. Periodontists treat gum disease and problems with tissues or supporting structures and can often save teeth that would have otherwise been lost. Prosthodontists repair badly broken teeth or replace missing teeth and structures using crowns, bridges, dentures and implants to correct the proper functioning of teeth. Oral pathologists often work in labs examining and diagnosing diseases of the oral tissues.
Oral radiologists examine x-rays and provide detailed diagnoses to dentist and patients.
Public health dentists develop programs to treat large population groups often with the assistance of government agencies.