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third molar tooth

 

Definition: eighth permanent tooth in the maxilla and mandible on each side, making it the most posterior tooth in human dentition; usually erupts between the 17th and 23rd years; the roots are often fused, the separation being marked only by grooves; because it tends to erupt in an anterosuperior direction, the lower third molar often becomes impacted against the lower second molar; it is common for one third molar (or more) to fail to develop.

Synonym(s): dens molaris tertiusTA, dens serotinus, dens sapientiae, third molar, wisdom tooth

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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