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To reduce food to a size manageable by the rest of the digestive system. As humans are omnivores (meaning we are capable of eating meat & plants) we have teeth for both tearing flesh (your canines & other "sharp" teeth) and grinding plant matter (your molars & other back flatter teeth).

Without teeth wwe would be limited only to whatever food was either small enough to eat whole, or had been reduced to a paste we could eat without chewing.

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17y ago

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