Loosely bound fluoride extracted from natural carious lesions after topical application of APF in  vitro.
D002124:Calcium Fluoride / Q000378:metabolism*; D003731:Dental Caries / Q000378:metabolism*; D003743:Dental Enamel / Q000378:metabolism*; D005460:Fluorides, Topical / Q000378:metabolism*; D006801:Humans; D013997:Time Factors
D005460:Fluorides, Topical; D002124:Calcium Fluoride