Who We Are: The American Academy of Periodontology was founded in 1914 by two women, Drs. Gillette Hayden and Grace Roger Spalding. It was initially named the American Academy of Oral Prophylaxis and Periodontology and began with 18 charter members. The name was changed to the American Academy of Periodontology in 1919. Today, the American Academy of Periodontology (AAP) has a membership of approximately 8,200. The AAP is housed in 14,000 square feet of space at 737 N. Michigan, directly next door to the American Dental Association.  Our team is dedicated to understanding and meeting the needs of our members, always working with their success in mind.  We are a passionate about what we do, and our commitment to excellence shines through the services and re