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| Teeth |
Teeth
Teeth are used by human beings, mammals and other vertebrates to chew, bite or tear food depending on the type of food being eaten. In some animals, the teeth wear off quickly due to constant chewing and gnawing and so grow through out the life of the animal. Other animals grow only a single set of teeth while human beings grow 2 sets of teeth - 20 primary or baby teeth and 32 permanent teeth.
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