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Medical Definition of Hertwig's sheath
1. The merged outer and inner epithelial layers of the enamel organ which extends beyond the region of the anatomical 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. (05 Mar 2000)
Lexicographical Neighbors of Hertwig's Sheath
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