Few comments:

My daughter had cavities, two of them, both in the same tooth (premolar) upper teeth both sides. She had them in her baby teeth. One I had the dentist pull. The other he put a (non-amalgam) filling in -- but then I took her back about 6 months later to have him pull because she got a peri-apical infection in that tooth. Don't really like the concept of fillings so wasn't unhappy about that.

First thing I think is:

She likely got these cavities because she was mobilizing minerals to use to make her permanent teeth and bones -- she was growing rapidly at that point. The body is smart enough to pull minerals from stores that don't do damage. Baby teeth are one such source of storage. I have a friend who had some cavities that she got filled, and the only time she had trouble with them was during pregnancy when her body was pulling minerals from her teeth to use for the baby -- this happened to her over two separate pregnancies -- not a coincidence.

So, I approached it like you did, from a nutritional standpoint. We tried the whole oil pulling thing -- didn't make a bit of difference to those cavities. Again -- I don't think her body was interested in fixing them. They were single use teeth that the body was going to throw away anyway.

We stopped her drinking juice. And I started giving her a glass of grass fed cow milk, non-homogenized, non-pasteurized, from Jersey cows daily. No cavities since then.

We also do not use fluoride toothpaste. She drinks filtered water with no fluoride. I have no problem with topical fluoride treatments -- go ahead and dope the enamel -- it does make it stronger. Topical contact is the only way that drinking fluoridated water works anyway -- so get all the benefits of fluoride for the teeth with none of the drawbacks of actually ingesting the poisonous stuff.

Make sure you get plenty of sun exposure -- it's not enough to get enough minerals, you need the vitamin D to absorb the calcium, and the oral version is not the same sulfated version that you make from sunlight.