Mandibular Canine Anatomy
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Questions and Answers

What is the shape of the distal outline of the mandibular canine in the cervical third?

  • Sigmoid
  • Straight
  • Concave (correct)
  • Convex
  • Where is the distal contact area of the mandibular canine located?

  • At the cusp tip
  • At the junction of the middle and incisal thirds (correct)
  • At the junction of the middle and cervical thirds
  • At the mesioincisal angle
  • What is the orientation of the cusp angle of the mandibular canine when the cusp ridges are not affected by wear?

  • On a line with the center of the root (correct)
  • Parallel to the root
  • Perpendicular to the root
  • At an angle to the root
  • How does the length of the root of the mandibular canine compare to that of the maxillary canine?

    <p>It is shorter</p> Signup and view all the answers

    What is the shape of the lingual surface of the crown of the mandibular canine?

    <p>Smooth and flat</p> Signup and view all the answers

    How does the curvature of the crown of the mandibular canine compare to that of the maxillary canine above the cervical line?

    <p>It is less curved</p> Signup and view all the answers

    What is the characteristic of the tip of the cusp of the mandibular canine?

    <p>It is centered over the root and pointed</p> Signup and view all the answers

    What is the characteristic of the developmental depression mesially on the root of the mandibular canine?

    <p>It is deep</p> Signup and view all the answers

    What is the characteristic of the lingual surface of the mandibular canine crown?

    <p>It is smoother with less cingulum development.</p> Signup and view all the answers

    Which of the following is true about the cusp of the mandibular canine?

    <p>It is not so well developed as the maxillary canine.</p> Signup and view all the answers

    What is the characteristic of the root of the mandibular canine?

    <p>It is usually shorter than the maxillary canine.</p> Signup and view all the answers

    Where is the mesial contact area located in the mandibular canine?

    <p>In the incisal third near the mesioincisal angle.</p> Signup and view all the answers

    What is the characteristic of the curvature of the root ends of the mandibular canine?

    <p>It is often in the mesial direction.</p> Signup and view all the answers

    What is the characteristic of the crown of the newly erupted mandibular canine?

    <p>It is often the longest in the mouth.</p> Signup and view all the answers

    What is the characteristic of the mesiodistal dimension of the mandibular canine?

    <p>It is less than that of the maxillary canine.</p> Signup and view all the answers

    What is the characteristic of the appearance of the crowns of mandibular canines?

    <p>They appear longer than the maxillary canines.</p> Signup and view all the answers

    Study Notes

    Mandibular Canine

    • The crown of the mandibular canine is narrower mesiodistally and labiolingually than the maxillary canine, but similar in length.
    • The root of the mandibular canine is usually shorter than the maxillary canine, but can be as long in some cases.
    • The lingual surface of the crown is smoother, with less cingulum development and less bulk to the marginal ridges compared to the maxillary canine.
    • The cusp of the mandibular canine is not as well-developed as the maxillary canine, with thinner cusp ridges labiolingually.

    Contact Areas

    • The mesial contact area is in the incisal third near the mesioincisal angle.
    • The distal contact area is more cervical, at the junction of the middle and incisal thirds.
    • Both contact areas are more incisal than those of the maxillary canine.

    Root Variations

    • A variation of the mandibular canine is bifurcated roots, which is not rare.
    • Root curvatures are infrequent, but when present, they often occur in the mesial direction.

    Crown Characteristics

    • The crown of the mandibular canine appears longer due to its narrowness mesiodistally and the height of the contact areas.
    • The mesial outline of the crown is nearly straight with the mesial outline of the root.
    • The distal outline may be slightly concave in the cervical third and convex in the incisal two-thirds.

    Comparison with Maxillary Canine

    • The lingual surface of the crown is smoother and flatter, simulating that of the mandibular incisor.
    • The cingulum is smooth and poorly developed, and the marginal ridges are less distinct.
    • The lingual portion of the crown is narrower relatively than that of the maxillary canine.
    • The tooth has less curvature above the cervical line labially and lingually, including the cingulum.

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    Description

    This quiz covers the characteristics of the mandibular canine tooth, comparing it to the maxillary canine in terms of crown and root shape and size.

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