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</p> Signup and view all the answers

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

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

    In tooth anatomy, where is the circumscribed concavity located?

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

    How would you describe the mesial surface of the root?

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

    What characteristic does the mesial surface of the root exhibit?

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

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

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

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

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

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

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

    Why are developmental depressions important for tooth stability?

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

    How do developmental depressions affect tooth anchorage?

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

    How do developmental depressions contribute to oral health?

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

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