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Dentin

 October 23, 2013 |  admin |  Lecture series, Faculty Development Program Series
Questions
Answer
Peritubular in
interglobular dentin is a
Absent as interglobular
dentin is  uncalcified
The looping of dentinal
tubules in radicular dentin causes
Airspaces formation in the
loop in ground section, resulting in internal reflection of transmitted light
causing Tomes granular layer
Reason for absence of Tomes
granular layer in crown is
Differences in rate of
formation of dentinal tubule
Lines associated with
primary curvature of dentin is
Schreger line –
differentiating primary and secondary dentin
Lines associated with
secondary curvature of dentin is
Contour line of Owen;
neonatal line
short period deposition of
incremental lines in dentin are commonly called as
von Ebner’s line
The coarser long period
lines in dentin are called as
Andresen line
Between two Andresen lines
in dentin, there are ___________ number of von Ebner lines
six to 10 pairs
Where is the primary enamel
knot found?
It is a found in the tip of
epithelial tooth bud and is a signalling center
Where is the secondary
enamel knot found?
At the site of future cusp
tips