Dental Anatomy: Root Structures and Crown Features
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Questions and Answers

What is the characteristic of the roots of the tooth described in the text?

  • Short and centrally located
  • Thick and closely packed
  • Thin and widely spread (correct)
  • Long and indistinct
  • Where is the furcation in relation to the crown's structure?

  • At the middle third
  • Close to the root trunk
  • Close to the incisal edge
  • Close to the cervical line (correct)
  • What is the appearance of the lingual aspect of the crown?

  • Narrow with lingual convergence and convex surface (correct)
  • Narrow and concave
  • Wide and flat
  • Wide with multiple cusps
  • In the three-cusp type crown, how many lingual cusps are typically present?

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

    What is the characteristic of the occlusal outline in the text?

    <p>Sharp mesiolingual cusp and mesial marginal groove</p> Signup and view all the answers

    Which root is notably longer than the other according to the text?

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

    What is the characteristic of the lingual ridge of deciduous canines compared to permanent canines?

    <p>Less prominent in deciduous canines</p> Signup and view all the answers

    Where is the base of the geometric outline of the crown located in deciduous incisors?

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

    In deciduous teeth, where is the cusp tip positioned in relation to the long axis line on the incisal aspect?

    <p>Labial to the long axis line</p> Signup and view all the answers

    In deciduous teeth, what characterizes the occlusal outline on the incisal aspect?

    <p>Diamond shape</p> Signup and view all the answers

    Where are the roots of deciduous canines most bulky?

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

    What feature is prominent in the mesial and distal aspects of deciduous teeth?

    <p>Cervical ridge and cingulum</p> Signup and view all the answers

    What are the three cusps on the buccal surface of the deciduous second molar named?

    <p>Mesiobuccal, buccal, and distobuccal cusps</p> Signup and view all the answers

    What type of spaces are usually seen in the deciduous anteriors to accommodate larger permanent teeth in the jaws?

    <p>Primate spaces</p> Signup and view all the answers

    Which type of teeth have a space called Lee way space of Nancy created by their smaller mesiodistal size compared to deciduous molars?

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

    What causes the space known as Lee way space of Nancy to be taken up?

    <p>Mesial migration of permanent molars</p> Signup and view all the answers

    What is the sequence for root completion in the deciduous teeth chronology table?

    <p>1.5 y, 3 years before shedding, 3y</p> Signup and view all the answers

    Which of the following is a characteristic mentioned in the text for deciduous second molars?

    <p>Prominent cervical ridge</p> Signup and view all the answers

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