The F-ions make the enamel on teeth much harder by converting hydroxyapatite (the enamel on the ....
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The F-ions make the enamel on teeth much harder by converting hydroxyapatite (the enamel on the surface of teeth) into much harder fluoroapatite having the formula 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live

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