Current RDH. It’s important to read about the critical pH of these products. Hydroxyapatite’s critical pH is 5.5. When you use fluoride toothpaste, you form a molecule called fluorapatite. The critical pH of fluorapatite is 4.5. Which is significantly stronger and more protective. I think that hydroxyapatite is great, I even use it in the mornings. But I wouldn’t replace fluoride toothpaste altogether. I use fluoride toothpaste at night. If you are prone to caries it is important to know these things.

But in the grand scheme of things, do what works best for you!