title: Effect of regular versus sustained-release multivitamin supplementation upon periodontal parameters. Gingival state.
mesh_terms: D002986:Clinical Trials as Topic; D003692:Delayed-Action Preparations; D005881:Gingiva / Q000187:drug effects*; D005882:Gingival Diseases / Q000188:drug therapy*; D006801:Humans; D014801:Vitamin A / Q000008:administration & dosage; D014803:Vitamin B Complex / Q000008:administration & dosage; D014807:Vitamin D / Q000008:administration & dosage; D014815:Vitamins / Q000008:administration & dosage*
chemical_list: D003692:Delayed-Action Preparations; D014815:Vitamins; D014801:Vitamin A; D014803:Vitamin B Complex; D014807:Vitamin D