I'd say about a month or so until I wasn't worried about it anymore. But again, it was visible and accessible on the side of my tooth. If it was between teeth, not sure what I would do... probably go to the dentist.

>Are you really saying the tooth repaired itself and the cavity is gone?

Absolutely, yes. It had a yellowish stain in the place where the hole was after it filled in. But even that is not visible anymore. (this was over 15 years ago)

>This contradicts everything dentists tell us but I would be very happy if you were right.

Yes it does, and it pissed off my dentist when I told him. He was dismissive as though I were crazy.

>We definitely need more information. What food to avoid and what food is fine?

I really don't like to make detailed assertions like this. I had one simple rule at the time that I followed, I stopped eating white sugar. (and corn syrup) I know many people have different experiences with food, and so I don't like being dogmatic about stuff, I think everyone should experiment with the foods they eat, test things and figure out themselves what works.

But if you stop eating refined (or artificial) sweeteners, you will find that easily 70-80% of the food in the grocery store will no longer be in your diet... it's that pervasive. Also, they have like 20 names for refined sugars now. :P