Unlike ameloblasts and odontoblasts, which leave no cellular bodies in their secreted products, during the later steps within the stage of apposition, many of the cementoblasts become entrapped by the cementum they produce, becoming cementocytes.
32.
This green-gray residue, Nasmyth membrane, consists of the fused tissue of the reduced enamel epithelium and oral epithelium, as well as the dental cuticle placed by the ameloblasts on the newly formed outer enamel surface.
33.
The formation of the striae of Retzius results from a constriction of Tomes'processes when the activity of ameloblasts cells only present in laying down enamel is narrowed in conjunction with an increasing process of interrod enamel development.
34.
MMP-20, also known as enamelysin, appears to be the only MMP that is tooth-specific and it is expressed by cells of different developmental origin ( i . e . epithelial ameloblasts and mesenchymal odontoblasts ).
35.
Enamel formation continues around the adjoining ameloblasts, resulting in a walled area, or pit, that houses a Tomes process, and also around the end of each Tomes process, resulting in a deposition of enamel matrix inside of each pit.
36.
Outside the dentin are the newly formed ameloblasts in response to the formation of dentin, which are cells that continue the process of enamel formation; therefore, enamel formation moves outwards, adding new material to the outer surface of the developing tooth.
37.
When this first layer is formed, the ameloblasts move away from the interface with dentin, allowing for the development of Tomes processes at the end of the cell which is in contact with the DEJ . Tomes'process is the term given to the end of the cell which lays down the crystals of the enamel matrix.
38.
Some sections get a bit sticky, and could be improved by merely just using constructs like " ameloblasts are polarized columnar cells, which are _ _ _ _ _ . " or " Tomes processes, which _ _ _ _ _ . " The explanations need not be detailed, just merely gives the reader an idea of the subconcept without getting bogged down in technicalities.
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