15 Questions
What is the shape of the dentinal tubules in the root?
S-shaped (sigmoid)
Where are the branches of the dentinal tubules near the terminals referred to as?
Terminal branches
In which part of the tooth are the tubules almost straight?
Incisal edges and cusps
How do the tubules end with respect to the dentinoenamel and dentinocementum junctions?
Perpendicular
What is the variation in thickness of dentin mentioned in the text?
3 to 10 mm or more
Starting at right angles from the pulpal surface, the first convexity of this doubly curved course is directed toward the ______ of the tooth
apex
Near the root tip and along the incisal edges and cusps, the tubules are almost ______
straight
The dentin ranges in thickness from 3 to 10 mm or ______
more
The terminal branching is more profuse in the root dentin than in the ______ dentin
coronal
Dentin showed variation in thickness between the sexes, it was thicker in boys than girls of similar age group and this increased during ______
puberty
Over their entire lengths, the tubules exhibit minute, relatively regular secondary curvatures that are ______ in shape
sinusoidal
The course of the dentinal tubules follows a gentle curve in the crown, less so in the root, where it resembles a gentle S (________ course) in shape
sigmoid
The dentin ranges in thickness from 3 to 10 mm or ______
more
Dentin thickness varied not only from tooth to tooth but also in different surfaces of the same ______
tooth
The tubules are longer than the dentin, and are thick because they curve through ______
dentin
Test your knowledge on the curvatures of dentinal tubules in the crown and root of teeth, including the direction of the doubly curved course and their termination points. This quiz covers the primary curvatures and branches of dentinal tubules.
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