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Hertwig sheath

Pronunciation: hert'vig

Definition: the merged outer and inner epithelial layers of the enamel organ that extend beyond the region of the anatomic crown and initiates formation of dentin in the root of a developing tooth; it atrophies as the root is formed, and any of the cells that persist are called Malassez epithelial rests.

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