Every time you have a meal, the teeth demineralize, and then the biome that sits on the biofilm brings in calcium, phosphate, other minerals from the saliva. Again, that's a bank too. And it pulls it past that thin film, the biofilm. And again, if it's dysbiotic and too thick and you haven't been brushing or you've been feeding it with carbohydrates, that biofilm becomes dysfunctional.

It doesn't remineralize as well. But that's what that little layer does on that inanimate object. It keeps the calcium from getting pulled out. And if it is, it puts it back in. That's that demineralization, remineralization cycle. Again, 15, 20 years ago, it was like you had a hole in the tooth.

That was it. You're done. Get a filling. But now we understand it's dynamic.