Fluoride in Water ·
Nature's Cavity Fighter
un
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.com · hydroxyapatite → fluorapatite · enamel · 0.7 ppm
Optimal
≈ 0.7 mg/L
Reaction
OH⁻ → F⁻ swap
phase
—
F⁻ ion (fluoride)
Ca²⁺ (enamel)
PO₄ phosphate
OH⁻ site
Fluorapatite glow
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.com · Fluoride in Water