I have an amazing dentist who stay current with updated data & research. He has said for a long time that sugar doesn't cause cavities, acids do. He also has seen many of his patients reverse small cavities with water flossing & using a high mineral & silver mouthwash (Elementa is the brand name I believe). He was saying it looks like both a neutral pH & the minerals are needed to rebuild. He also noted that not all of his patients have had enough success rebuilding their teeth, though it is at least a good first step from his observation.

I should ask him if he has tracked vegan/carnivore/keto/US Standard/vegetarian lifestyles in combination with these results. He loves to learn & insurance won't pay for half of what he does because "it isn't necessary". His patients track records beg to differ.