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Humans have four types of teeth: incisors, canines, premolars, and molars, which each have a specific function. The incisors cut the food, the canines tear the food and the molars and premolars crush the food. The roots of teeth are embedded in the maxilla (upper jaw) or the mandible (lower jaw) and are covered by gums.
A tooth (pl.: teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food.Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, tearing food, for defensive purposes, to intimidate other animals often including their own, or to carry prey or their young.
Narwhal. The narwhal ( Monodon monoceros) is a species of toothed whale native to the Arctic. It is the only member of the genus Monodon, and one of two living representatives of the family Monodontidae. The narwhal has a similar build to the closely related beluga whale, with which it overlaps in range and can interbreed.
Dental anatomy is a field of anatomy dedicated to the study of human tooth structures. The development, appearance, and classification of teeth fall within its purview. (The function of teeth as they contact one another falls elsewhere, under dental occlusion .) Tooth formation begins before birth, and the teeth's eventual morphology is ...
Megalodon teeth can measure over 180 millimeters (7.1 in) in slant height (diagonal length) and are the largest of any known shark species,[29]: 33 implying it was the largest of all macropredatory sharks.[35] In 1989, a nearly complete set of megalodon teeth was discovered in Saitama, Japan.
A woman dressed as the Tooth Fairy during Halloween. The tooth fairy is a folkloric figure of early childhood in Western and Western-influenced cultures. [1] The folklore states that when children lose one of their baby teeth, they should place it underneath their pillow or on their bedside table; the Tooth Fairy will visit while they sleep, replacing the lost tooth with a small payment.
It can be difficult to diagnose tooth decay at home without seeing a dentist since it often does not show any signs or symptoms. Losing teeth to decay or gum disease can also affect more than just ...
Dentition pertains to the development of teeth and their arrangement in the mouth. In particular, it is the characteristic arrangement, kind, and number of teeth in a given species at a given age. [ 1] That is, the number, type, and morpho-physiology (that is, the relationship between the shape and form of the tooth in question and its inferred ...