When I was in college I had a hole on the side of my molar, it was a cavity that had started as small dot, and gotten bigger. I didn't have insurance. So I too

When I was in college I had a hole on the side of my molar, it was a cavity that had started as small dot, and gotten bigger. I didn't have insurance. So I took a toothpick and cleaned out the gunk and washed it out with peroxide. (just on the toothpick) I kept it clean with a tooth pick, and intentionally swished spit around the tooth regularly. Eventually the hole filled back in. I know teeth can "heal", but I think "re-calcify" is a better term I ran into the past few years. But like anything else on your body, I think it hits a point where there's nothing you can do about it. I knew a lady that drank so much coke that it ate her teeth away, nothing that lady could do about fixing her own teeth.