title: CDC: Half of American adults have periodontal disease.
mesh_terms: D000328:Adult; D000368:Aged; D002487:Centers for Disease Control and Prevention, U.S.; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010510:Periodontal Diseases / Q000453:epidemiology*; D015995:Prevalence; D014481:United States / Q000453:epidemiology