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cell-poor zone


Definition: the zone of the pulp located between the cell-rich zone (q.v.) and the odontoblastic zone; it is normally devoid of cells, although during reparative dentin formation, fibroblasts (and occasionally mesenchymal cells) pass through the cell-poor zone to replace dead odontoblasts.

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