Ameloblasts

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()Map ALIMENTARY SYSTEM (Map)
ANATOMY OF THE ENAMEL ORGAN



Introduction

Ameloblasts are cells in the enamel organ which forms the tooth. They secrete enamel.


Properties

Ameloblast Histology - Copywright RVC 2008
  • Epithelial cells
  • Lines the inner surface of the enamel organ
  • Derived from epithelium
  • Maintains connections with the newly synthesised enamel through cellular projections called Thomes' fibres
  • Enamel is acellular so once the connection with the ameloblasts via the Thomes' fibres is lost (upon eruption), enamel matrix cannot be remodelled
  • A single layer of very long columnar cells
  • Hexagonal in cross section
  • Elongated basally sited nuclei