The premolar teeth or premolars, also known as bicuspids (Latin: dentes premolares) lie between the canines and first molar teeth. 

There are four maxillary premolars (4, 5, 12, 13) in the upper jaw and four mandibular premolars (20, 21, 28, 29) in the lower jaw. Each side of the jaw (quadrant) contains two premolars. So in total, every adult has 8 premolar teeth.

This type of teeth provides food crushing, grinding, grasping, and also chewing.

Premolars usually have only one bifurcated root, while the crown is cuboid-shaped.

The biting area of premolars (occlusal surface) usually presents with two elevations or cusps.

NOTE: the Universal Tooth Numbering System for secondary dentition is used for premolar teeth numbering. Find out what it is and which are the two other systems in the article about the dental notation systems.