I never said oil pulling got rid of cavities, cavatations or anything of th kind. I did claim that antibacterial oils can absorb in the mouth and help with root canal cavaties and teeth that are infected below the gumline.
I had a friend that graduated dental school. When I told her how I cured my tooth infection with oil pulling, she said the same thing: that infections can only be removed by surgery, and in a matter of months not years my tooth infection will come roaring back worse than before. It's been years and my infected teeth have gone and stayed back to normal with no hint of re-infection.
Since you're already pulling I'll bow out since it's obviously not giving you all the relief you need. You're right that I know little to nothing about cavitation surgery , it's just that as you describe it I'm very suspicious that scraping away bacteria and infection will be effective long term. I know how dentists find procedures that are more designed to help their bottom line than your oral health. But I'll be quiet now.