Fluoride ion uptake by enamel

Fluoride ion uptake by enamel refers to the process in which fluoride ions, typically delivered through topical products (varnishes, gels, foams, rinses) or via systemic sources (water fluoridation, supplements), are incorporated into the mineral phase of the tooth's outer enamel. This process results in the formation of fluorapatite or fluorohydroxyapatite, which is more resistant to acid dissolution and decay than the original hydroxyapatite mineral in enamel. The uptake is influenced by factors such as the form and concentration of fluoride, application method, enamel condition, and duration of exposure. Regular low-dose fluoride exposure is especially effective for maintaining elevated resistance to acid attack. The process is a key mechanism underlying the prevention of dental caries[1][3][5][7][4][6][2]. The process itself is not a discrete molecular target, enzyme, transporter, nor receptor, and thus is not classified as a therapeutic drug target in the molecular pharmacology sense.

Other names

Enamel fluoride uptakeFluoride incorporation into enamelEnamel fluoridation

Ion exchange and substitution of hydroxyl groups in hydroxyapatite with fluoride to form fluorapatite Adsorption of fluoride onto enamel surface to enhance remineralization and reduce demineralization Promotion of “acquired resistance” by incorporation of fluoride, which increases acid resistance