title: [Basic requirements for controlled clinical studies of periodontal diseases].
mesh_terms: D002986:Clinical Trials as Topic; D003773:Dental Plaque / Q000175:diagnosis; D003951:Diagnostic Errors; D005888:Gingival Pocket / Q000175:diagnosis; D006801:Humans; D007258:Informed Consent; D010510:Periodontal Diseases; D010512:Periodontal Index; D010519:Periodontium / Q000473:pathology; D012107:Research Design
vernacular_title: Grundsätzliche Forderungen für kontrollierte klinische Versuche bei Parodontopathien.