title: [Epidemiology of gingivitis and periodontitis and the need for clinically controlled studies].
mesh_terms: D002986:Clinical Trials as Topic; D003729:Dental Care; D005891:Gingivitis / Q000175:diagnosis* / Q000453:epidemiology; D006801:Humans; D010518:Periodontitis / Q000175:diagnosis* / Q000453:epidemiology
vernacular_title: Epidemiologie der Gingivitis und Periodontitis und die Notwendigkeit klinisch kontrollierter Untersuchungen.