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A tooth (plural teeth) is a cheap, calcified, whitish build start in the jaws (or mouths) of many vertebrates and used to defeat down food. Some animals, surprisingly carnivores, also exercise teeth for the purpose hunting or instead of defensive purposes. The roots of teeth are covered by means of gums. Teeth are not made of bone, but to a certain extent of multiple tissues of varying density and hardness.

The ordinary design of teeth is be like across the vertebrates, although there is of distinction converting in their show up and position. The teeth of mammals have profound roots, and this figure is also rest in some fish, and in crocodilians. In most teleost fish, however, the teeth are partial to to the outer surface of the bone, while in lizards they are attached to the inner side of the jaw alongside the same side. In cartilaginous fish, such as sharks, the teeth are joined around cold ligaments to the hoops of cartilage that type the jaw.