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by lumb63
1074 days ago
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That we have not migrated to hydroxyapatite from fluoride is a mystery to me. It actually remineralizes the enamel rather than protecting it. It lacks the toxicity of fluoride as well. It’s more expensive, but I suspect that’s because it hasn’t scaled yet. |
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So does fluoride. (It replaces the hydroxyl group. Your saliva already contains calcium and phosphate.) Enamel remineralized with fluoride yields fluorapatite, which has a critical PH of 4.5 vs 5.5. of hydroxyapatite: https://en.wikipedia.org/wiki/Fluorapatite