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| Web Pages |
| NIDCR: Periodontal (Gum) Diseases |
| The National Institute of Dental and Craniofacial Research describes gum disease and presents an overview of risks and treatments. |
| MayoClinic.com: Gingivitis |
| Symptoms, causes, treatment, and prevention. |
| Gum Disease Information |
| The American Academy of Periodontology's description of periodontal (gum) diseases, including gingivitis and periodontitis. |
| ADA: Gum Disease (Periodontal Disease) |
| Detection, treatment and, prevention of periodontal diseases, from the American Dental Association. |
| MEDLINEplus Medical Encyclopedia: Gingivitis |
| Illustrations, causes, prevention, and treatment, from the National Library of Medicine. |
| Periodontal Health - OHSU |
| Overview, symptom and treatment information from Oregon Health and Sciences University. |