Dr. Yara Haridi

And it takes them a certain number of months to gain that back.

So unfortunately, our teeth don't react the same way because they don't have osteocytes.

They don't usually have cells inside that will adapt to the change in real time.

There's small adaptations, especially with our teeth, human teeth, that we have things like secondary dentine.

We have a slight remineralization of our enamel.

So, you know, if

If you have really weak enamel, there are ways to make it stronger, fluoride being one of them.

And then dentine, if there's damage, you'll have secondary dentine start to deposit and like kind of block the hole from forming.

That's kind of how our teeth try to react to cavities because you really don't want a hole right to your nerves, which are in your pulp cavity, which is why your teeth hurt.

So, great question.

Tooth replacement or constant tooth replacement is the original state.

Once tooth replacement evolved, almost everything kept replacing its teeth.

Oh.

So salamanders replaced their teeth, reptiles replaced their teeth, everything, everything, everything until mammals.

And there's a couple of exceptions, of course, with full tooth loss, like birds don't replace their teeth because they don't have any.

So mammals basically reduce that to a really extreme extent where we only have the two sets, the baby teeth and our adult teeth, right?

So the baby teeth are what you're seeing in those baby x-rays.

Yeah, horrifying.

Terrifying, but they're just like in weight, right?

So they're like a full adult tooth made right above the or below the...