Dentinal Tubules and Curvatures Quiz

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Questions and Answers

What is the shape of the dentinal tubules in the root?

  • Straight
  • Sinusoidal
  • Gentle curve
  • S-shaped (sigmoid) (correct)

Where are the branches of the dentinal tubules near the terminals referred to as?

  • Terminal branches (correct)
  • Peripheral branches
  • Primary branches
  • Secondary branches

In which part of the tooth are the tubules almost straight?

  • Incisal edges and cusps (correct)
  • Root tip
  • Junctions
  • Crown

How do the tubules end with respect to the dentinoenamel and dentinocementum junctions?

<p>Perpendicular (C)</p> Signup and view all the answers

What is the variation in thickness of dentin mentioned in the text?

<p>3 to 10 mm or more (A)</p> Signup and view all the answers

Starting at right angles from the pulpal surface, the first convexity of this doubly curved course is directed toward the ______ of the tooth

<p>apex</p> Signup and view all the answers

Near the root tip and along the incisal edges and cusps, the tubules are almost ______

<p>straight</p> Signup and view all the answers

The dentin ranges in thickness from 3 to 10 mm or ______

<p>more</p> Signup and view all the answers

The terminal branching is more profuse in the root dentin than in the ______ dentin

<p>coronal</p> Signup and view all the answers

Dentin showed variation in thickness between the sexes, it was thicker in boys than girls of similar age group and this increased during ______

<p>puberty</p> Signup and view all the answers

Over their entire lengths, the tubules exhibit minute, relatively regular secondary curvatures that are ______ in shape

<p>sinusoidal</p> Signup and view all the answers

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

<p>sigmoid</p> Signup and view all the answers

The dentin ranges in thickness from 3 to 10 mm or ______

<p>more</p> Signup and view all the answers

Dentin thickness varied not only from tooth to tooth but also in different surfaces of the same ______

<p>tooth</p> Signup and view all the answers

The tubules are longer than the dentin, and are thick because they curve through ______

<p>dentin</p> Signup and view all the answers

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