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How many permanent teeth do humans normally have?

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A labeled cross section illustration of an adult human molar shows the tooth's crown and root, with layers including enamel, dentin, and pulp, as well as gum, cementum, blood vessels, periodontal ligament, lateral canals, and nerve. — tooth Cross section of an adult human molar.

Humans normally have 32 permanent teeth in their adult dentition. These teeth replace the 20 primary, or deciduous, teeth that appear during childhood.12

The permanent dentition consists of the following teeth in each jaw:
* 4 incisors1
* 2 canines1
* 4 premolars1
* 6 molars1

While the primary teeth are shed as the jaw grows, the 12 adult molars erupt behind the primary teeth and do not replace any of them.1