title: Smokeless tobacco and periodontal disease.
authors.forename: Brad
authors.initials: B
authors.lastname: Rodu
authors.forename: Philip
authors.initials: P
authors.lastname: Cole
mesh_terms: D004522:Educational Status; D006801:Humans; D010510:Periodontal Diseases / Q000209:etiology*; D012307:Risk Factors; D012923:Social Class; D014030:Tobacco, Smokeless / Q000009:adverse effects*