A tooth (plural teeth) is a undersized, calcified, whitish form initiate in the jaws (or mouths) of innumerable vertebrates and occupied to ease up down food. Some animals, surprisingly carnivores, also partake of teeth for hunting or owing defensive purposes. The roots of teeth are covered nearby gums. Teeth are not made of bone, but to a certain extent of multiple tissues of varying density and hardness.

The unrestricted structure of teeth is nearly the same across the vertebrates, although there is respectable converting in their show up and position. The teeth of mammals be struck by deep roots, and this figure is also initiate in some fish, and in crocodilians. In most teleost fish, manner, the teeth are fastened to the outer rise of the bone, while in lizards they are fond of to the inner come up of the jaw during the same side. In cartilaginous fish, such as sharks, the teeth are attached beside tough ligaments to the hoops of cartilage that type the jaw.