Dentistry: Mandibular Central Incisors Characteristics
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Questions and Answers

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

  • Contact points are near incisal ridges mesially & distally (correct)
  • Contact points are closer to the root of the tooth
  • Contact points are near the middle of the tooth
  • Contact points are near the gingival margin

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

  • They disappear if the occlusion is normal (correct)
  • They remain prominent throughout life
  • They increase in size gradually
  • They move towards the gingival margin

    • How does the incisal ridge of mandibular central incisors relate to a line bisecting the root?

  • The incisal ridge is at the same level as the line bisecting the root
  • The incisal ridge is superior to the line bisecting the root
  • The incisal ridge is lingual to the line bisecting the root (correct)
  • The incisal ridge is buccal to the line bisecting the root

    • What is a distinguishing feature of mandibular central incisors in terms of their root length compared to maxillary central incisors?

    <p>The root length is longer than maxillary central incisors</p> Signup and view all the answers

    Which aspect of mandibular central incisors makes them distinct from other permanent teeth in terms of width?

    <p>They have the narrowest width labiolingually</p> Signup and view all the answers

    What is the eruption age range of 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 that of mandibular central incisors?

    <p>Lingual surface is devoid of developmental grooves</p> Signup and view all the answers

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

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

    Which statement is TRUE regarding the mesiodistal width of the crown in mandibular lateral incisors?

    <p>It is 1 mm more than that of mandibular central incisor</p> Signup and view all the answers

    In a worn tooth, what kind of incisal edge is seen on mandibular lateral incisors?

    <p>Labial slope</p> Signup and view all the answers

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

    <p>Distal contact area is more cervical than mesial</p> Signup and view all the answers

    What is a characteristic feature of the incisal ridge of the tooth described?

    <p>Straight and at a right angle to the long axis of the tooth</p> Signup and view all the answers

    Which aspect of the tooth shows a concave surface from the incisal edge to the cervical line?

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

    What is a distinguishing characteristic of the mesial outline of this tooth near the cervical third?

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

    Which surface of the tooth has a well-defined developmental groove at the center?

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

    What bilateral symmetry feature is seen on the incisal aspect of this tooth?

    <p>Incisal edge at right angle to line bisecting the crown labiolingually</p> Signup and view all the answers

    What distinguishes this tooth specifically in differentiating between Central Incisor (CI) and Lateral Incisor (LI)?

    <p>The wider labial surface mesiodistally than lingual</p> Signup and view all the answers

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