This results in the perpetually increasing size of the junctional epithelial layer and the isolation of the remnants of ameloblasts from any source of nutrition.
22.
In the secretory stage, ameloblasts release enamel proteins that contribute to the enamel matrix, which is then partially mineralized by the enzyme alkaline phosphatase.
23.
It is at this stage that a signal is sent from the newly differentiated ameloblasts back across the dentinoenamel junction ( DEJ ) to stimulate dentinogenesis.
24.
The neonatal line marks the stress or trauma experienced by the ameloblasts during birth, again illustrating the sensitivity of the ameloblasts as they form enamel matrix.
25.
The neonatal line marks the stress or trauma experienced by the ameloblasts during birth, again illustrating the sensitivity of the ameloblasts as they form enamel matrix.
26.
Enamel mineralization only occurs once ( as ameloblasts are lost with eruption within the reduced enamel epithelium ); therefore after amelogenesis, enamel production has been finalized.
27.
The active route is controlled by ameloblasts so the site of mineralization can have a tightly controlled climate, including modulation of proteins that inhibit mineralization ( e . g.
28.
A smaller amount of cases are of the hypomaturation-hypoplastic case type, in which the enamel structure is softer due to the under maturation of ameloblasts during development.
29.
Enamel spindles are also linear defects, but they too can be found only at the DEJ, because they are formed by entrapment of odontoblast processes between ameloblasts prior to and during amelogenesis.
30.
The article, under the " Development " section says : " At some point before the tooth erupts into the mouth, but after the maturation stage, the ameloblasts are broken down.
