I have a very large cavity in one of my molars. I tried to oil pull, use a diy remineralizing toothpaste (bentonite clay, calcium/magnesium, baking soda), and eat as clean as possible for about 2 years. I couldn't keep it up, and didn't see any difference after my experimentation. I finally got the cavity filled this past year. It's been nice not having any pain while eating. Do what's best for you! I haven't seen or heard of much success with complete tooth remineralization of large cavities.
