Ameloblasts And Inner Enamel Epithelium

Inner enamel epithelium
Answer:

Inner enamel epithelium is first seen during the cap stage
Consists of a single layer of columnar cells called ameloblasts
Present on the concave surface in the cap and bell stage
Size
- 4-5 pm in diameter
- 40 pm high
Attached to one another by junctional complexes and to the cells of stratum intermedium by desmosomes
When the inner enamel epithelium is in contact with the dental papilla it receives its nutrient supply from the blood vessels of the dental papilla but dentin is formed, it cut off the ameloblasts from the source of nourishment.
The inner enamel epithelium is supplied by the capillaries of the dental sac

Functions:

It exerts influence on underlying mesenchymal cells of the dental papilla to differentiate into odontoblasts
In the formation of cusps
Inner enamel epithelial cells present in future cusp tip region stop differentiating
Pressure is exerted on them by continuous division from other areas of the enamel organ
As a result, these cells are pushed out of the enamel organ
Thus cusp tip is formed

Reader Interactions