Microhardness, fluoride content and electron-microscopic appearance of enamel after topical fluoridation.
D055598:Chemical Phenomena; D002621:Chemistry; D003743:Dental Enamel / Q000187:drug effects*; D005459:Fluorides; D005460:Fluorides, Topical; D006244:Hardness; D006245:Hardness Tests; D006801:Humans; D008854:Microscopy, Electron
D005460:Fluorides, Topical; D005459:Fluorides