September 4, 2012—One out of every two American adults aged 30 and over has periodontal disease, according to recent findings from the Centers for Disease Control and Prevention (CDC). A study titled Prevalence of Periodontitis in Adults in the United States: 2009 and 2010 estimates that 47.2 percent, or 64.7 million American adults, have mild, moderate or severe periodontitis, the more advanced form of periodontal disease. In adults 65 and older, prevalence rates increase to 70.1 percent. This study is published in the Journal of Dental Research, the official publication of the International and American Associations for Dental Research.

Periodontal disease is a chronic inflammatory disease that affects the gum tissue and bone supporting the teeth, according to the American Academy of Periodontology (AAP). If left untreated, periodontal disease can lead to tooth loss. Research has also shown that periodontal disease is associated with other chronic inflammatory diseases, such as diabetes and cardiovascular disease. The AAP has worked closely with CDC since 2003 on periodontal disease surveillance.

The findings are based on data collected as part of CDC’s 2009-2010 National Health and Nutrition Examination Survey (NHANES), designed to assess the health and nutritional status of adults and children in the United States. The 2009-2010 NHANES included for the first time a full-mouth periodontal examination to assess for mild, moderate, or severe periodontitis, making it the most comprehensive survey of periodontal health ever conducted in the U.S. Researchers measured periodontitis because it is the most destructive form of periodontal disease. Gingivitis, the earliest stage of periodontal disease, was not assessed.