Anatomy and Cell Biology 3309 Lecture Notes - Lecture 5: Inner Enamel Epithelium, Permanent Teeth, Cementum
7 Mar 2017
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Document Summary
Teeth formation: bud stage, neuroectodermal cells induce the overlying epithelial cells to proliferate and form an invaginating tooth bud (ingrowth of epithelium) Invagination is accompanied by: cap stage, the epithelial tooth bud forms a cup-like structure under the influence of cytokines secreted by cells in the mesenchyme. It fills it with neurocrest cells and mesenchyme: mesenchyme surrounding cap forms a sac (cells forming a sac-like structure around it, late cap stage, the epithelial tooth bud is lined by an outer and inner enamel epithelium. Inner enamel epithelium differentiates into a single layer of ameloblasts: odontoblasts develop from the cranial neural crest in the dental papilla, bell stage, the inner enamel epithelium (ameloblasts) secretes. Enamel (non-cellular: the outermost cells of the dental papilla (odontoblasts) secretes dentin (cellular, tooth eruption, the dental sac gives rise to, cementoblasts forming the cementum, cells forming the. Secretory stage: production of enamel matrix proteins, amelogenin and enamelin.
