30th anniversary of caries preventive dentifrice.
D003731:Dental Caries / Q000517:prevention & control; D003802:Dentifrices / Q000266:history*; D005459:Fluorides / Q000266:history*; D049673:History, 20th Century; D010710:Phosphates / Q000266:history*
D003802:Dentifrices; D010710:Phosphates; C012980:fluorophosphate; D005459:Fluorides