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ORAL HISTO > DENTIN 2.0 > Flashcards

DENTIN 2.0 Flashcards

0
Q

Dead tracts

Tubules are emptied by:

A

Retraction of odontoblastic processes towards pulp

Death of odontoblasts

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1
Q

Dentinal tubules filled with air that appear BLACK in ground sections

A

Dead tracts

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2
Q

Response to a moderate level of stimuli

A

Dead tracts

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3
Q

Dead tracts formed When teeth are mechanically prepared to with in _ of the pulp

A

1.5mm of the pulp

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4
Q

Time: of differentiation of new odontoblasts and formation of reParative dentin

A

15 days

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5
Q

Tubules occluded with CALCIFIED MATERIAL
Glossy appearance
Increases with age

A

Sclerotic dentin

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6
Q

Other term for sclerotic dentin

A

Transparent dentin - bec glossy appearance

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7
Q

Sclerotic dentin is most common in the

A

Apical 1/3 of root

Midway bet DEJ & PULP

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8
Q

Areas of HYPOmineralized dentin where calcospherites have failed to fuse into a homogenous mass

A

Interglobular dentin

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9
Q

Globular zones of mineralization

A

Calcospherites

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10
Q

Interglobular dentin is prevalent in

A

Vit D def

Exposure to high levels of fluoride or fluorosis

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11
Q

Interglobular dentin as mostly seen

A

Below mantle dentin

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12
Q

Only seen in root dentin and ground sections

A

Granular layer of tomes

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13
Q

Black layer of granular structures loc in the peripheral zone of ROOT DENTIN (adjacent to cementum)

A

Granular layer of tomes

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14
Q

It is a distinct layer equidistant to the outer surface

A

Granular layer of tomes

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15
Q

Granular layer of tomes is due to..

A

Due to the arrangement of collagen and matrix protein at the interface between dentin and cementum

16
Q

Marks the 5 DAY INCREMENT where changes in collagen fiber orientation are demonstrated

A

Incremental lines of Von Ebner

17
Q

Org matrix of dentin is deposited at a rate of _ and is mineralized in a _ cycle

A

4mm/day

12 hr cycle

18
Q

Incremental lines in DENTIN

A

Contour lines of Owen

19
Q

Changes in the coloration of the dentin

A

Contour lines of owen

20
Q

Intercept the DEJ and meet an accompanying Striae that was formed at the SAME time

A

Contour lines of owen

ORAL HISTO (11 decks)

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