title: Researchers investigate methods to prevent caries on roots and crowns.
mesh_terms: D003731:Dental Caries / Q000517:prevention & control*; D004311:Double-Blind Method; D005460:Fluorides, Topical / Q000627:therapeutic use*; D005782:Gels / Q000627:therapeutic use; D006801:Humans; D008875:Middle Aged; D009067:Mouthwashes / Q000627:therapeutic use; D009316:National Institutes of Health (U.S.); D016032:Randomized Controlled Trials as Topic; D014481:United States
chemical_list: D005460:Fluorides, Topical; D005782:Gels; D009067:Mouthwashes