Molars (overview)

The molars (Latin: dentes molares) are the most distal or the last teeth in every row located at the back of the oral cavity

Adults have a set of twelve molar teeth - six in each jaw and three in each quadrant. 

The crown of the molars is cuboid-shaped. It is convex on the buccal and lingual/palatal surfaces while flattened on the contact surfaces (mesial and distal)

The occlusal surface of each molar tooth is square-shaped, usually containing four or five cusps

The maxillary molars usually present with five cusps on their surface, while the mandibular with four.

The upper molars have three roots, while the lower ones - only two

The molar teeth provide food grinding and crushing. 

The last molar teeth on every side of the maxilla and mandible are called the wisdom teeth. These are also the last teeth to erupt, and for some individuals, it does not happen at all during their lifetime.

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