Premolar
The permanent teeth, viewed from the right.
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Latin	'
Gray's	subject #242
System
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MeSH	A14.549.167.860.150
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The premolar teeth or bicuspids are transitional teeth located between the canine and molar teeth. In humans, there are two premolars per quadrant, making eight premolars total in the mouth. They have at least two cusps. Premolars can be considered as a 'transitional tooth' during chewing, or mastication. It has properties of both the anterior canines and posterior molars, and so food can be transferred from the canines to the premolars and finally to the molars for grinding, instead of directly fromt he canines to the molars. Image File history File links Gray1003. ... Latin is an ancient Indo-European language originally spoken in the region around Rome called Latium. ... In biology, an organ is a group of tissues which perform some function. ... Embryology is the branch of developmental biology that studies embryos and their development. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... Elseviers logo Elsevier, the worlds largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. ... Types of teeth Molars are used for grinding up foods Carnassials are used for slicing food. ... In oral anatomy, the canine teeth, also called cuspids, dogteeth, fangs, or (in the case of those of the upper jaw) eye teeth, are relatively long, pointed teeth, evolved (and used, in most species where they remain prominent) primarily for firmly holding food in order to tear it apart, and... Molar 47 (left), molar 46 and premolar 45(right) Molars are the rearmost and most complicated kind of tooth in most mammals. ... Look up Quadrant on Wiktionary, the free dictionary Quadrant can mean: HMS Quadrant (G11), a WW-II British/Australian warship. ... In common parlance, a cusp is an important moment usually regarded as a decision point upon which consequent events are determined. ... Mastication or chewing is the process by which food is torn and/or crushed by teeth. ... In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... The English word POSTERIOR is identical to the original Latin adjective, and has two different uses : as an ADJECTIVE, it indicates that someone or something is behind another, either spatially or chronologically it also became a SUBSTANTIVE, indicating the rear-end, especially of a person, i. ...

The premolars in humans are the maxillary first premolar, maxillary second premolar, mandibular first premolar, and the mandibular second premolar. The maxillary first premolar is the tooth located laterally (away from the midline of the face) from both the maxillary canines of the mouth but mesial (toward the midline of the face) from both maxillary second premolars. ... The maxillary second premolar is the tooth located laterally (away from the midline of the face) from both the maxillary first premolars of the mouth but mesial (toward the midline of the face) from both maxillary first molars. ... The mandibular first premolar is the tooth located laterally (away from the midline of the face) from both the mandibular canines of the mouth but mesial (toward the midline of the face) from both mandibular second premolars. ... The mandibular second premolar is the tooth located distally (away from the midline of the face) from both the mandibular first premolars of the mouth but mesial (toward the midline of the face) from both mandibular first molars. ...

There is always one large buccal cusp, especially so in the mandibular first premolar. The lower second premolar may, at times present with two lingual cusps.

Premolar teeth by definition are permanent teeth distal to the canines preceded by deciduous molars. In primitive mammals there are four premolars per quadrant. The most mesial two have been lost in New World monkeys, apes, and humans. Paleontologists refer to human premolars as Pm3 and Pm4. In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... In oral anatomy, the canine teeth, also called cuspids, dogteeth, fangs, or (in the case of those of the upper jaw) eye teeth, are relatively long, pointed teeth, evolved (and used, in most species where they remain prominent) primarily for firmly holding food in order to tear it apart, and... ... Orders Subclass Multituberculata (extinct) Plagiaulacida Cimolodonta Subclass Palaeoryctoides (extinct) Subclass Triconodonta (extinct) Subclass Eutheria (excludes extinct ancestors) Afrosoricida Anagaloidea (extinct) Artiodactyla Carnivora Cetacea Chiroptera Cimolesta (extinct) Creodonta (extinct) Condylarthra (extinct) Dermoptera Desmostylia (extinct) Dinocerata (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Litopterna (extinct) Macroscelidea Mesonychia (extinct) Notoungulata (extinct) Perissodactyla Pholidota Plesiadapiformes... Families Cebidae Nyctipithecidae Pitheciidae Atelidae The New World monkeys or Platyrrhines are the four families of primates that are found in Central and South America, the Cebidae, Nyctipithecidae, Pitheciidae and Atelidae. ... A paleontologist carefully chips rock from a column of dinosaur vertebrae. ... This article is about modern humans. ... Pm3 is the dental notation referring to the mandibular third premolar. ...