Enamel Mineralization and the Role of Ameloblasts in Calcium Transport

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Abstract
Amelogenesis is a dynamic and unique process of cell-matrix interactions in that matrix synthesis, degradation and resorption all proceed simultaneously, coupled with mineral depositions in a compartment between ameloblasts and dentin or dental papilla. Accumulation of data suggest the role of ameloblasts in tooth morphogenesis and matrix formation, but no fully acceptable explanation has been given concerning the role of ameloblasts in calcium transport. In this article, old and new points of issue raised regarding the role of ameloblasts in calcium acquisition are reviewed and possible mechanisms whereby the ameloblasts prevent the rise of cytosolic calcium while actively or less actively transporting calcium are elaborated upon based on recent findings.

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