Dental The mechanism of action of APF is via following reaction products: A Fluoridated hydroxyapatite B Stannous trifluorophosphate C Dicalcium phosphate dihydrate (DCPD) D DCPD + Calcium fluoride + fluorapatite 💡 Explanation The mechanism of action of APF is via following reaction products: ✓ Correct Answer: D. DCPD + Calcium fluoride + fluorapatite