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 (D)</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 (D)</p> Signup and view all the answers

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

<p>Lingual root (B)</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 (A)</p> Signup and view all the answers

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

<p>Cervically (B)</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 (B)</p> Signup and view all the answers

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

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

Where are the roots of deciduous canines most bulky?

<p>In the cervical third (B)</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 (C)</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 (B)</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 (B)</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 (C)</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 (D)</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 (C)</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 (A)</p> Signup and view all the answers

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