Introducing fluoridation to a continent.
D001294:Attitude to Health; D003731:Dental Caries / Q000517:prevention & control; D005457:Fluoridation; D005459:Fluorides / Q000627:therapeutic use; D005503:Food Additives; D006267:Health Education, Dental; D011639:Public Opinion
D005503:Food Additives; D005459:Fluorides