The conversion of hydroxyapatite occurs due to the presence of $F^{-}$ ions in water. The correct formula of hydroxyapatite is:

  • A
    $[3 Ca_{3}(PO_{4})_{2} \cdot Ca(OH)_{2}]$
  • B
    $[3 Ca(OH)_{2} \cdot CaF_{2}]$
  • C
    $[Ca_{3}(PO_{4})_{2} \cdot CaF_{2}]$
  • D
    $[3 Ca_{3}(PO_{4})_{2} \cdot CaF_{2}]$

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