Researchers estimate that 75 percent of American adults have some form of periodontitis, and roughly 20 to 25 percent have moderate to severe cases. If left untreated, periodontal disease can lead to more than just tooth loss. Several studies have associated periodontitis with other chronic illnesses, such as diabetes, cardiovascular diseases, and rheumatoid arthritis, which makes it even more important to maintain healthy teeth and gums. In addition to daily tooth brushing and flossing, researchers advise adults to obtain a comprehensive periodontal evaluation every year.
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