Oh mine got the memo. They lay peacefully, horizontally in my jaw, like little Saddam Husseins until they decided they wanted to visit other parts of my jaw and make friends along the way.

But he lived a long and happy life. He died at the ripe old age of 35

Nuts and bones. Tree bark of the yew tree when you inevitably get indigestion.

I eat the joints of bones - further up they tend to splinter and taste more chalky, but the joints are delicious and satisfying once you get past the ick factor. I thought even the cartilage was gross as a kid, but at some point instincts kicked in and my body told me it was a great idea. I knew marrow was nutritious and some people ate it, but I still don't find it that appealing - joint bones are one of the most satisfying things ever though, I highly recommend gnawing on the end of a chicken wing

Just because of your comment, I grabbed some tree bark to try... Cinnamon sticks. And holy shit, I just wanted to try it out, but I couldn't stop. It just splinters at first, but once you start grinding the flavor kicks in and it just melts - 10/10, it'd be easy to eat enough to make yourself sick, but I'm going to be trying this again

And FWIW, I've never had a cavity. I brush my teeth every morning but otherwise only if I feel I need to. I slightly cracked a tooth once, but my dentist was great and told me to use fluoride toothpaste and hold off on a crown - it's been a decade and it hasn't bothered me in years

Trust your body. Yes, gnaw on bones and tree bark - not all of it, your body knows what is edible and what isn't. If your instincts say "gnaw on this", and it's not made of plastic or metal, give it a try... If you take it slowly, what's the worst that can happen? Probably a tummy ache

I'll admit I don't have a citation. I just remember it from a video about how this African dude had magnificent teeth because of the environment he grew up in.

Edit: Oh nice, you found a wiki page which validates my thing!