How Forks Gave Us Overbites and Pots Saved the Toothless
Until around 250 years ago in the West, archaeological evidence suggests that most human beings had an edge-to-edge bite, similar to apes. In other words, our teeth were aligned liked a guillotine, with the top layer clashing against the bottom layer. Then, quite suddenly, this alignment of the jaw changed: We developed an overbite, which is still normal today. The top layer of teeth fits over the bottom layer like a lid on a box.
[…] What changed 250 years ago was the adoption of the knife and fork, which meant that we were cutting chewy food into small morsels before eating it. Previously, when eating something chewy such as meat, crusty bread or hard cheese, it would have been clamped between the jaws, then sliced with a knife or ripped with a hand — a style of eating Professor Brace has called “stuff-and-cut.”
The clincher is that the change is seen 900 years earlier in China, the reason being chopsticks.
Read more [via theatlantic, Image: flickr].
I love these bits of re-revelations.