title: Periodontal disease, Part IV: Calculus and other etiologic factors.
authors.forename: H M
authors.initials: HM
authors.lastname: Goldman
mesh_terms: D003728:Dental Calculus / Q000032:analysis / Q000150:complications* / Q000628:therapy; D003773:Dental Plaque / Q000150:complications; D005891:Gingivitis / Q000209:etiology; D006801:Humans; D010510:Periodontal Diseases / Q000209:etiology* / Q000473:pathology