Maxillary Lateral Incisor Anatomy
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Questions and Answers

What is the main difference between the maxillary lateral incisor and the maxillary central incisor?

  • Shape of the lingual fossa
  • Angle of the mesio-incisal angle
  • Size of the crown (correct)
  • Number of roots
  • What is the characteristic of the distal outline of the maxillary lateral incisor?

  • More angular
  • More curved
  • More tapered
  • More rounded (correct)
  • What is the shape of the root of the maxillary lateral incisor?

  • Tapered and mesially curved
  • Tapered and distally curved (correct)
  • Straight and pointed
  • Curved and rounded
  • How does the lingual fossa of the maxillary lateral incisor compare to that of the maxillary central incisor?

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

    What is the location of the crest of curvature on the mesial outline of the maxillary lateral incisor?

    <p>Between the middle and incisal thirds</p> Signup and view all the answers

    What is a characteristic of the mesial aspect of a maxillary lateral incisor?

    <p>The curvature of the cervical line is less than that of the maxillary central incisor.</p> Signup and view all the answers

    What is a characteristic of the incisal aspect of a maxillary lateral incisor?

    <p>The incisal aspect is more convex labially and lingually.</p> Signup and view all the answers

    What is a variation from the typical form of a maxillary lateral incisor?

    <p>A peg-shaped lateral incisor with a thin root and a small conical crown.</p> Signup and view all the answers

    What can be found on the distal aspect of a maxillary lateral incisor?

    <p>A developmental groove extending to the root.</p> Signup and view all the answers

    What is a characteristic of the lingual aspect of a maxillary lateral incisor?

    <p>The cingulum is prominent, with a tendency toward seeing a deep developmental groove within the lingual fossa.</p> Signup and view all the answers

    Study Notes

    Maxillary Incisors Comparison

    • Main difference: Maxillary lateral incisors are generally smaller and less symmetrical than maxillary central incisors.
    • The shape of the maxillary central incisor is more pronounced with a broader incisal edge, while the lateral incisor has a narrower edge.

    Distal Outline of the Maxillary Lateral Incisor

    • The distal outline is often more rounded compared to the straight outline of the central incisor.

    Root Shape

    • The root of the maxillary lateral incisor is typically conical and slender, which distinguishes it from the broader root of the maxillary central incisor.

    Lingual Fossa Comparison

    • The lingual fossa of the maxillary lateral incisor is usually deeper and more pronounced than that of the maxillary central incisor.

    Crest of Curvature Location

    • The crest of curvature on the mesial outline is located higher than that of the maxillary central incisor, contributing to a distinctive profile.

    Mesial Aspect Characteristic

    • The mesial aspect reveals a more pronounced curvature at the cervical line, resulting in an overall rounded contour.

    Incisal Aspect Characteristic

    • The incisal aspect typically shows a triangular shape, with a narrower width compared to the central incisor.

    Variations from Typical Form

    • A common variation of the maxillary lateral incisor includes the presence of a peg-shaped or microdont form, providing a unique appearance.

    Distal Aspect Features

    • On the distal aspect, there may be a developmental groove or depression that is less pronounced than on the central incisor.

    Lingual Aspect Characteristic

    • The lingual aspect often features a prominent cingulum and a well-defined mesial and distal marginal ridge, enhancing its aesthetic appearance.

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    Description

    Test your knowledge on the maxillary lateral incisor, including its function, form, and anatomy, and its distinct features compared to the maxillary central incisor.

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