Why humans are the only species who get wonky teeth and require orthodontic treatment??
In: Biology
Because we evolved chewing harder food. This caused increased growth in the jaw. When we began to make softer food like bread, boiled meat, and roasted plants this stimulation was lost and so the growth of our jaws was reduced. When this happened there simply was not enough room in our jaws for our teeth. It was a very rapid change compared to evolution do we didnt have the time to evolve smaller teeth or fewer teeth.
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