(from Fluoride Journal, by The International Society for Fluoride Research:
Fluoride [Fluoride]. Vol. 41, no. 3, p. 253. Jul-Sep 2008.)
Oh, and then, straight from the JADA (Journal of the American Dental Association) and the CDC:
"In the earliest days of fluoride research, investigators hypothesized that fluoride affects enamel and inhibits dental caries only when incorporated into developing dental enamel (i.e., preeruptively, before the tooth erupts into the mouth) (30,31). Evidence supports this hypothesis (32--34), but distinguishing a true preeruptive effect after teeth erupt into a mouth where topical fluoride exposure occurs regularly is difficult. However, a high fluoride concentration in sound enamel cannot alone explain the marked reduction in dental caries that fluoride produces (35,36). The prevalence of dental caries in a population is not inversely related to the concentration of fluoride in enamel (37), and a higher concentration of enamel fluoride is not necessarily more efficacious in preventing dental caries (38).
The laboratory and epidemiologic research that has led to the better understanding of how fluoride prevents dental caries indicates that fluoride's predominant effect is posteruptive and topical and that the effect depends on fluoride being in the right amount in the right place at the right time. Fluoride works primarily after teeth have erupted, especially when small amounts are maintained constantly in the mouth, specifically in dental plaque and saliva (37). Thus, adults also benefit from fluoride, rather than only children, as was previously assumed."
Might it help much to understand that silico-fluorides are bactericidal? Like regular old saltwater gargle is, in fact?
Mmmmmm... yeah. About that. BEING THAT FLUORIDE IS TOPICAL, one could surmount a gigantic and firestorm argument against proponents of said mass medication (being that, indeed, it is medicinally applied for human consumption), SUGGESTIVE THAT WE ALL SIMPLY BRUSH OUR TEETH REGULARLY.
Wall Street Journal covered this whole problem back in 1998... what the heck is going on???