DENTIN 2.0 Flashcards
(21 cards)
Dead tracts
Tubules are emptied by:
Retraction of odontoblastic processes towards pulp
Death of odontoblasts
Dentinal tubules filled with air that appear BLACK in ground sections
Dead tracts
Response to a moderate level of stimuli
Dead tracts
Dead tracts formed When teeth are mechanically prepared to with in _ of the pulp
1.5mm of the pulp
Time: of differentiation of new odontoblasts and formation of reParative dentin
15 days
Tubules occluded with CALCIFIED MATERIAL
Glossy appearance
Increases with age
Sclerotic dentin
Other term for sclerotic dentin
Transparent dentin - bec glossy appearance
Sclerotic dentin is most common in the
Apical 1/3 of root
Midway bet DEJ & PULP
Areas of HYPOmineralized dentin where calcospherites have failed to fuse into a homogenous mass
Interglobular dentin
Globular zones of mineralization
Calcospherites
Interglobular dentin is prevalent in
Vit D def
Exposure to high levels of fluoride or fluorosis
Interglobular dentin as mostly seen
Below mantle dentin
Only seen in root dentin and ground sections
Granular layer of tomes
Black layer of granular structures loc in the peripheral zone of ROOT DENTIN (adjacent to cementum)
Granular layer of tomes
It is a distinct layer equidistant to the outer surface
Granular layer of tomes
Granular layer of tomes is due to..
Due to the arrangement of collagen and matrix protein at the interface between dentin and cementum
Marks the 5 DAY INCREMENT where changes in collagen fiber orientation are demonstrated
Incremental lines of Von Ebner
Org matrix of dentin is deposited at a rate of _ and is mineralized in a _ cycle
4mm/day
12 hr cycle
Incremental lines in DENTIN
Contour lines of Owen
Changes in the coloration of the dentin
Contour lines of owen
Intercept the DEJ and meet an accompanying Striae that was formed at the SAME time
Contour lines of owen
