Development L10 - Hard tissue formation 1 dentinogenesis Flashcards Preview

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Flashcards in Development L10 - Hard tissue formation 1 dentinogenesis Deck (18)
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1
Q

what type of tissue is dentine

A

specialised connective tissue

2
Q

dentine has tubular structure, which contain cell process, how would you describe dentine?

A

vital

3
Q

organic matrix is only found where in dentine

A

pre-dentine

4
Q

what type collagen is present in dentine

A

type 1 collagen

5
Q

how does dental papilla and Inner enamel epithelium differ in reference to their origin

A

dental papilla is derived from ectomesnchyme

Inner enamel epithelial is derived from epithelial tissues

6
Q

what is the name of the star shaped cell

A

stellate reticulum

7
Q

what is the name of the cell between the stellate reticulum and the Inner enamel epithelium

A

stratum intermedium

8
Q

what is the name of the columnar cells in the image

A

Inner Enamel Epithelium

9
Q

what is the name of the gap between the papilla cells and the basal lamina

A

Acellular space

10
Q

how do the IEE towards the cervical loop differ from the IEE towards the cervical

A

the IEE towards to the cervical are allot more columanr as a result of maturation.

11
Q

what is happening in this image

A

the epithelial cells have sent a signal to the papilla cells, which has resulted in them spliting and differentiating

12
Q

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

A

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

13
Q

as the odontblast secrete predentine, they are forced to retreat inwards. in doing so what do the odotonblast leave behind as they retreat inwards.

A

odontoblast process

14
Q

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

A

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.

15
Q

mineralisation of the pre-dentine to dentine occurs through the interaction between what

A

collagen and matrix vesicles

16
Q

formation of interglobular dentine is a result of what?

A

failure of calcospherites fusion

17
Q

what is the name given to the very 1st formed dentine that is adjacent to enamel

A

mantle dentine

18
Q
A

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