title: [The contribution of longitudinal studies in the improvement of our knowledge of periodontal disease].
mesh_terms: D000818:Animals; D003430:Cross-Sectional Studies; D003773:Dental Plaque / Q000150:complications; D005891:Gingivitis / Q000209:etiology; D006801:Humans; D008137:Longitudinal Studies; D010510:Periodontal Diseases / Q000209:etiology* / Q000276:immunology / Q000382:microbiology / Q000473:pathology
vernacular_title: Hesymbole makrochronion meletion sten katanoese tou mechanismou tes periodontikes nosou.