title: [Dental calculus and its effect on the periodontal tissues].
mesh_terms: D003728:Dental Calculus / Q000032:analysis / Q000150:complications / Q000473:pathology*; D003773:Dental Plaque / Q000032:analysis / Q000150:complications / Q000473:pathology; D006801:Humans; D010510:Periodontal Diseases / Q000209:etiology / Q000382:microbiology / Q000473:pathology; D010519:Periodontium / Q000382:microbiology / Q000473:pathology*
vernacular_title: Zubnoĭ kamen' i ego vliianie na tkani parodonta.