Ameloblast

Ameloblasts ( Adamant of ancient Greek. Άδάμας ( adamas ) " invincible ", " diamond " and βλἀστη ( blastä ) "seed" or ameloblasts ( amel Old English " melting " ) ) are specialized cells that form the enamel. They are of neuroectodermal origin and differentiate in the context of tooth development from the epithelium enameleum (interior enamel ).

They form after the beginning of the dentin by the odontoblasts of the tooth enamel, which consists predominantly of hydroxyapatite. The exocytosis of secretory vesicles in which the substances of the organic framework of the enamel are happening at Zellapex, where there is also a clumsy appendage Tomes - extension is. After the enamel formation is complete, the ameloblasts convert to squamous of junctional epithelium. They lose the ability to divide. During eruption these cells eventually migrate toward the sulcus ( sulcus between the tooth and gum ) and are repelled. Therefore, tooth enamel can not regenerate.