The American Academy of Periodontology (AAP) is an 8,400-member professional organization for periodontists - specialists in the prevention, diagnosis, and treatment of diseases affecting the gums and supporting structures of the teeth, and in the placement of dental implants. Periodontists are also dentistry's experts in the treatment of oral inflammation and receive three additional years of specialized training following dental school.

The American Association of Endodontists, founded in 1943, is a not-for-profit organization of endodontists and other professionals worldwide with an interest in endodontics. Endodontics was recognized by the American Dental Association as a specialty of dentistry in 1963. The AAE currently has more than 7,500 members worldwide.

The American Association of Oral and Maxillofacial Surgeons (AAOMS), the professional organization representing more than 9,000 oral and maxillofacial surgeons in the United States, supports its members' ability to practice their specialty through education, research, and advocacy. AAOMS members comply with rigorous continuing education requirements and submit to periodic office examinations, ensuring the public that all office procedures and personnel meet stringent national standards.

The American Association of Orthodontists, or AAO, is the American professional association for orthodontists. Most American orthodontists, about 95 percent, are members. All orthodontists are dentists and may simultaneously hold membership in the American Dental Association.  Orthodontists are dental specialists in the diagnosis, prevention, and treatment of orthodontic problems who have completed a minimum of two academic years of study in an accredited orthodontic residency program. Only those dentists who have completed this training may call themselves "orthodontists," and only orthodontists may be members of the American Association of Orthodontists.