Development L10 - Hard tissue formation 1 dentinogenesis Flashcards
what type of tissue is dentine
specialised connective tissue
dentine has tubular structure, which contain cell process, how would you describe dentine?
vital
organic matrix is only found where in dentine
pre-dentine
what type collagen is present in dentine
type 1 collagen
how does dental papilla and Inner enamel epithelium differ in reference to their origin
dental papilla is derived from ectomesnchyme
Inner enamel epithelial is derived from epithelial tissues
what is the name of the star shaped cell
stellate reticulum
what is the name of the cell between the stellate reticulum and the Inner enamel epithelium
stratum intermedium
what is the name of the columnar cells in the image
Inner Enamel Epithelium
what is the name of the gap between the papilla cells and the basal lamina
Acellular space
how do the IEE towards the cervical loop differ from the IEE towards the cervical
the IEE towards to the cervical are allot more columanr as a result of maturation.
what is happening in this image
the epithelial cells have sent a signal to the papilla cells, which has resulted in them spliting and differentiating
the image shows the cells have crossed the acellular space and differentiated in to odontoblast (purple)
the other cells however do not and remain turquoise, why is this
these cells are stem cells that exist in the pulp and will come into function if there is damge done to the teeth and new odontoblast is required
as the odontblast secrete predentine, they are forced to retreat inwards. in doing so what do the odotonblast leave behind as they retreat inwards.
odontoblast process
the pre-dentine disintegrates and mineralises forming dentine.
what affect does the dentine have on the basal lamina and, how does this affect the epithelial cells
the dentine initiates the disintegration of the basal lamina.
this allows the contact of dentine to the epithelial cells, which are ameolblasts.
the ameloblast then start secreting enamel.
mineralisation of the pre-dentine to dentine occurs through the interaction between what
collagen and matrix vesicles
