A periodontist specializes in the prevention, diagnosis and treatment of periodontal disease, and in the placement of dental implants. Periodontists receive training in these areas, including three additional years of education beyond dental school. Periodontists are familiar with the latest techniques for diagnosing and treating periodontal disease and the placement of dental implants. In addition, they can perform cosmetic periodontal procedures to help you achieve the smile you desire. Often, dentists refer their patients to a periodontist when their periodontal disease is advanced. However, you do not need a referral to see a Periodontist. In fact, there are occasions when you may choose to go directly to a periodontist or refer a family member or friend to your own periodontist.