Academy of General Dentistry - Represents the interests of general dentists by fostering their continued proficiency through dental education. American Academy of Periodontology - Provides information about periodontal disease and treatment and a periodontist referral service. American Association of Endodontists - The recognized specialty organization for endodontics (root canal treatment). Find information for patients, members, professionals and the media. American Academy of Cosmetic Dentistry - The AACD is dedicated to advancing the art and science of Cosmetic Dentistry.