Dental Anatomy and Terminology Quiz

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Questions and Answers

What is the shape of the root's outline described in the text?

  • Cylindrical
  • Triangular
  • Spherical
  • Conical (correct)

Which part of the root has a tapered pointed apex according to the text?

  • Entire length
  • Middle section
  • Tip (correct)
  • Base

What is the texture of the root's outline as mentioned in the text?

  • Rough
  • Irregular
  • Curved
  • Smooth (correct)

In what shape does the text describe the root's outline?

<p>Conical (B)</p> Signup and view all the answers

Which term best describes the apex of the root based on the text?

<p>Sharp (B)</p> Signup and view all the answers

In tooth anatomy, where is the circumscribed concavity located?

<p>Above the contact area (C)</p> Signup and view all the answers

What relationship exists between a line bisecting the cusp and a line bisecting the root?

<p>The cusp bisecting line is labial to the root bisecting line (C)</p> Signup and view all the answers

Where is the surface concave in relation to the cervical line?

<p>Between the contact area and the cervical line (A)</p> Signup and view all the answers

How would you describe the mesial surface of the root?

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

Which term describes a concavity that surrounds or encloses an area above the contact point on a tooth?

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

What type of relationship exists between the labial line and the root bisecting line in tooth anatomy?

<p>The labial line is lingual to the root bisecting line (C)</p> Signup and view all the answers

What characteristic does the mesial surface of the root exhibit?

<p>Deep depression (B)</p> Signup and view all the answers

Which of the following is NOT true about the mesial surface of the root?

<p>It is narrow (D)</p> Signup and view all the answers

What distinguishes the mesial surface of the root from other surfaces?

<p>Broad appearance (B)</p> Signup and view all the answers

Which feature is characteristic of the developmental depression on the mesial surface of the root?

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

How much does the cervical line curve towards the cusp on average at the cementoenamel junction?

<p>2.5 mm (A)</p> Signup and view all the answers

What is the shape described for the cervical line from this aspect?

<p>Concave (B)</p> Signup and view all the answers

What is the usual direction of the curvature of the cervical line at the cementoenamel junction?

<p>Toward the cusp (A)</p> Signup and view all the answers

What is the average amount of curvature observed in the cervical line at the cementoenamel junction?

<p>2.5 mm (C)</p> Signup and view all the answers

Which term best describes the curvature of the cervical line from this aspect?

<p><strong>Convex</strong> (B)</p> Signup and view all the answers

What is the function of developmental depressions on the heavy roots?

<p>To help anchor the teeth in the alveoli (C)</p> Signup and view all the answers

Why are developmental depressions important for tooth stability?

<p>They prevent rotation and displacement (D)</p> Signup and view all the answers

How do developmental depressions affect tooth anchorage?

<p>By hindering rotation and displacement (B)</p> Signup and view all the answers

What is the consequence of the absence of developmental depressions on heavy roots?

<p>Higher risk of tooth rotation and displacement (A)</p> Signup and view all the answers

How do developmental depressions contribute to oral health?

<p>By aiding in anchoring teeth securely (C)</p> Signup and view all the answers

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