Periodontics is the dental specialty focusing exclusively in the inflammatory disease that destroys the gums and other supporting structures around the teeth. A periodontist is a dentist who specializes in the prevention, diagnosis, and treatment of periodontal, or disease, and in the placement of dental implants. Periodontists receive extensive training in these areas, including three additional years of education beyond dental school. As specialists in periodontal disease, they are experts in the latest techniques for diagnosing and treating periodontal disease. They are also trained in cosmetic periodontal procedures.