Mandibular Central Incisors in Dentistry
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Questions and Answers

What is the unique characteristic of mandibular central incisors compared to maxillary incisors in terms of contact points?

  • Contact points are near incisal ridges mesially and distally. (correct)
  • Contact points are at different levels on central and lateral incisors.
  • Contact points are near the gingival margins mesially and distally.
  • Contact points are located towards the lingual surfaces mesially and distally.

    • What happens to the mamelons on the incisal ridge of mandibular central incisors after eruption?

  • They are retained throughout life.
  • They become more pronounced with age.
  • They shift towards the lingual side.
  • They are worn off if the occlusion is normal. (correct)

    • What is the inclination of the incisal surfaces (edge) of mandibular central incisors?

  • Vertical inclination.
  • No specific inclination.
  • Labial inclination. (correct)
  • Lingual inclination.

    • Where is the incisal ridge of mandibular central incisors in relation to a line bisecting the root?

    <p>Lingual to the line bisecting the root.</p> Signup and view all the answers

    What is the width comparison between mandibular central incisors and maxillary central incisors?

    <p>Mandibular central incisors are about half the width of maxillary central incisors.</p> Signup and view all the answers

    What is the shape of the lingual aspect of the tooth from the incisal edge to the cervical line?

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

    Which aspect of the tooth shows deep developmental depression with a well-defined developmental groove at the center?

    <p>Distal aspect</p> Signup and view all the answers

    What is a notable feature of the mesial and distal surfaces in terms of the cervical line?

    <p>Convex cervical line</p> Signup and view all the answers

    Which surface of the tooth is smooth and devoid of any grooves?

    <p>Lingual aspect</p> Signup and view all the answers

    Why do newly erupted teeth show Mamelons which wear off upon mastication?

    <p>Due to masticatory forces in function</p> Signup and view all the answers

    What is a distinguishing characteristic of the incisal aspect of this tooth?

    <p>'Bilateral symmetry' with right angle incisal edge</p> Signup and view all the answers

    What is the eruption age range for mandibular lateral incisors?

    <p>7-8 years</p> Signup and view all the answers

    How does the lingual surface of mandibular lateral incisors compare to mandibular central incisors?

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

    Where is the height of labial contour located in mandibular lateral incisors?

    <p>At the cervical third</p> Signup and view all the answers

    What is a distinguishing feature of the incisal edge slope of mandibular lateral incisors?

    <p>It slopes labially</p> Signup and view all the answers

    How does the mesiodistal width of the crown of mandibular lateral incisors compare to mandibular central incisors?

    <p>It is approximately 1mm more</p> Signup and view all the answers

    How does the distal contact area of mandibular lateral incisors compare to the mesial contact area?

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

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