Topical fluorides and hardness of enamel.
D003747:Dental Enamel Solubility / Q000187:drug effects*; D005460:Fluorides, Topical / Q000494:pharmacology*; D006244:Hardness; D006245:Hardness Tests; D006801:Humans; D066298:In Vitro Techniques; D007180:Incisor; D008437:Maxilla; D010710:Phosphates / Q000494:pharmacology; D013997:Time Factors; D014001:Tin / Q000494:pharmacology
D005460:Fluorides, Topical; D010710:Phosphates; D014001:Tin