Stock Photo - The teeth are hard structures composed of dentin and enamel which in humans grown out of the edges of the jaws. They are used to tear and chew food. There are four types of teeth: incisors, canines, pre_molars and molars. The chewing surface is covered wi

Stock Photo: The teeth are hard structures composed of dentin and enamel which in humans grown out of the edges of the jaws. They are used to tear and chew food.

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