Monday, May 12, 2014

CDC - Water Fluoridation Additives - Engineering Fact Sheet - Community Water Fluoridation - Oral Health


Fluoride Additives Are Not Different From Natural Fluoride

Some consumers have questioned whether fluoride from natural groundwater sources, such as calcium fluoride, is better than fluorides added "artificially," such as FSA or sodium fluoride. Two recent scientific studies listed below demonstrate that the same fluoride ion is present in naturally occurring fluoride or fluoride drinking water additives and that no intermediates or other products were observed at pH levels as low as 3.5. In addition, fluoride metabolism is not affected differently by the chemical compounds nor are they affected by whether the fluoride is present naturally or artificially.

  • The ionic speciation study conducted in 2006 mentioned previously (Finney WF, Wilson E, Callender A, Morris MD, Beck LW. Re-examination of hexafluorosilicate hydrolysis by fluoride NMR and pH measurement. Environ Sci Technol 2006;40:8:2572)
  • The pharmacokinetics of ingested fluoride was studied by a 2008 study (G.M. Whitford, F.C. Sampaio, C.S. Pinto, A.G. Maria, V.E.S. Cardoso, M.A.R. Buzalaf, Pharmacokinetics of ingested fluoride: Lack of effect of chemical compound, Archives of Oral Biology, 53 (2008) 1037–1041).

---Steve

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