Amelogenesis Flashcards
Epithelial Enamel/Dental Organ consists of
Inner Enamel Epithelium
Outer Enamel Epithelium
Stellate Reticulum
Stratum Intermedium
DEJ is the area between ______ and ________
IEE
CT of Dental Papilla
_____ is necessary for enamel formation and secretes alkaline phosphatase
Stratum Intermedium
Stratum Intermedium is found between ______ and _________
IEE
Stellate Reticulum
Cells of Stellate Reticulum are connected via ______ to each other as well as to cells of
Desmosomes
OEE and Stratum Intermedium
The 6 stages of Ameloblast differentiation are
Morphogenic Organizing Formative Maturation Protective Desmolytic
Blood vessels will begin to indent the ______ for future nourishment to ameloblasts
Outer Enamel Epithelium
______ will differentiate into ameloblasts
Inner Enamel Epithelium
The IEE contains large amounts of
Alkaline phosphatase and glycogen
Cells of the cervical loop will help to form
Hertwig’s Epithelial Root Sheath
The ______ stage of Ameloblasts will help determine the shape of DEJ and crown via _____ and ______ cells
Morphogenic
IEE and Dental Papilla
The IEE is separated from the Dental Papilla by a ______ during the Morphogenic Stage of Ameloblasts
Basal Lamina
During the _______ stage of Ameloblasts the IEE will react with dental papilla cells, inducing formation of _________
Organizing
Odontoblasts
During the Organizing stage of Ameloblasts the shape of the cells will become
columnar
During the Organizing stage of Ameloblasts the cell free zone will now be occupied by
Columnar Odontoblasts
Predentin formation occurs in which stage of Ameloblasts
Organizing
As dentin formation continues it will increase vascular supply to _______ and interrupt vascular supply to _____
Stellate Reticulum
Ameloblasts
The reduced enamel epithelium is formed by
OEE
Stratum Intermedium
Stellate Reticululm
Ameloblasts
The _______ collapsing signals the formation of reduced enamel epithelium
Stellate Reticulum
Ameloblasts enter the ______ stage after the first layer of dentin has been formed
Formative
During _______ stage, ameloblasts develop blunt processes that penetrate the basal lamina and deposit ______
Formative
Inorganic cyrstals and enamel matrix proteins
After the first deposition of enamel, ameloblasts will pull away from ______ and form projections called _______
Dentin
Tomes’ Processes
During ______ stage secretion of enamel will occur at tip of Tomes’ Processes via _____ method
Formative
Merocrine
During the _______ stage, full mineralization will begin after enamel has been laid down on occlusal surface
Maturation
During the the Maturation stage the ameloblasts will become shorter and form ________ which replaces ______
ruffled border (microvilli) Tomes' Processes
The ruffled border and smooth border of ameloblasts will alternate between ______ and _______
Absorption of Enamel Proteins
Secretion of Minerals
During the Maturation stage of Ameloblats rapid influx of ____ occurs to replace _______
Ca+ and P+ ions
Organic Matrix and H20
During the Protective stage microvilli are removed causing ameloblats to ______ between cell and enamel surface
Secrete thick Basal Lamina (Epithelial Attachement)
After completion of enamel formation and calcification ameloblasts resemble OEE and Stratum Intermedium, forming _______
Reduced Enamel Epithelium
The Reduced Enamel Epithelium functions to ______
Protect enamel from deposition of cementum
During the Desmolytic Stage ________
Reduced enamel epithelium proliferates and induces atrophy of CT, separating it from oral epithelium
