Fluoride varnish
Fluoride varnish is a highly concentrated form of fluoride which is applied to the tooth’s surface, by a dentist, dental hygienist or other health care professional, as a type of topical fluoride therapy.[1][2] It is not a permanent varnish but it due to its adherent nature it is able to stay in contact with the tooth surface for several hours.[2] It may be applied to the enamel, dentin or cementum of the tooth and can be used to help prevent decay, remineralize the tooth surface and to treat dentin hypersensitivity. Fluoride varnishes are relatively new in the United States, but they have been widely used in western Europe, Canada, and the Scandinavian countries since the 1980s as a caries prevention therapy. They are recognized by the Food and Drug Administration for use as desensitizing agents and cavity liners under dental restorations, but currently, not as an anti-decay agent.
