Brace yourself.

Our teeth say a lot. They reveal everything from our eating habits to our social habits. So open wide, and let’s dive in. A mature human has a complete set of 32 teeth. Four types of teeth are nestled into our jaws: molars, premolars, canines and incisors, plus the optional wisdom teeth. Our array of teeth types means we are heterodonts, like most mammals. Homodont animals, by contrast, have the same type of teeth throughout their jaw, making their bite imprint look mostly uniform. Teeth, ...

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