title: Effect of an antigenic preparation on the development of plaque and experimental gingivitis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000942:Antigens, Bacterial / Q000008:administration & dosage*; D001419:Bacteria / Q000276:immunology; D003773:Dental Plaque / Q000382:microbiology / Q000517:prevention & control*; D005883:Gingival Crevicular Fluid / Q000378:metabolism; D005891:Gingivitis / Q000517:prevention & control*; D006801:Humans; D009910:Oral Hygiene; D010512:Periodontal Index; D010919:Placebos; D012969:Sodium Fluoride / Q000494:pharmacology
chemical_list: D000942:Antigens, Bacterial; D010919:Placebos; D012969:Sodium Fluoride