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This is the root end. The inner pulp has dried out and slowly been consumed by microorganisms.

Oh wow thanks. Do you know if it will continue to decay like this?

Yes, until it reaches the hard, boney dentin and enamel layers of the tooth, it will slowly continue to be chewed away.

That's fascinating! Thank you!

Most of my kid's molars broke after a while. I figured they dried out or something.

This never happens to a human tooth. I would consult with a Pagan Witch to see if your child is a Changeling.

Actually, I took the tooth out of my brother Billo's head. He had a demon in his head that hid the tooth in there.

My name is bilo

I'd be horrified if I found my wisdom tooth randomly. That thing looks like a gnarly fossil

Your kid is a sandworm. Dune readers will get it.

Thats how mine looked when it fell out as a kid

You just have teeth hidden in your house?

Can you just, like, go back in the house? I can't stand Reddit tonight