- American Academy of Periodontology
 - Offers information on gum disease and treatment and a periodontist referral service. - California Society of Periodontists
- News, events, and statewide directory of periodontists.
- Canadian Academy of Periodontology
- Details gum disease (gingivitis and periodontitis), treatments, and provides a periodontist database.
- Iowa Society of Periodontology
- Includes news, events, and membership list.
- Minnesota Association of Periodontists
- Provides directory of members in Minnesota, North Dakota, and Wisconsin.
- Northeastern Society of Periodontists
- Events and directory of members in Maine, Massachusetts, Vermont, Rhode Island, New Hampshire, Connecticut, New York, New Jersey, Pennsylvania, Maryland, and Delaware.
- Southern Academy of Periodontology
- Includes an event calendar and directory of post-doctoral periodontal training programmes.
- Southwest Society of Periodontists
- Includes news, officers, events, as well as resources for patients.
- Virginia Society of Periodontology
- Offers meeting and membership information.
- Western Society of Periodontology
- Includes membership information, meeting schedule, and links.
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