Dental Anatomy: Contact Areas and Incisal Third
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Questions and Answers

What is the principal identifying feature of the permanent mandibular lateral incisor?

  • More visible mesial surface than the distal surface
  • More visible buccal surface than the lingual surface
  • More visible lingual surface than the labial surface (correct)
  • More visible occlusal surface than the incisal surface

Which surface is less visible in the permanent mandibular lateral incisor according to the text?

  • Distal surface (correct)
  • Mesial surface
  • Buccal surface
  • Incisal surface

In terms of visibility, which surface ranks highest in the permanent mandibular lateral incisor?

  • Occlusal surface
  • Buccal surface
  • Incisal surface
  • Lingual surface (correct)

Which feature distinguishes the permanent mandibular lateral incisor from other teeth?

<p>Well-defined lingual surface (B)</p> Signup and view all the answers

What makes the permanent mandibular lateral incisor easily recognizable among teeth?

<p>Prominently visible lingual surface (A)</p> Signup and view all the answers

Which statement about the contact areas is correct?

<p>They are located at the junction between the middle and incisal thirds of the crown. (D)</p> Signup and view all the answers

Which statement describes the broad middle and distal lines?

<p>They are straight (slightly convex). (D)</p> Signup and view all the answers

How is the distal incisal angle described in relation to the middle incisal angle?

<p>The distal incisal angle is more rounded than the middle incisal angle. (B)</p> Signup and view all the answers

Which of the following statements is NOT mentioned in the text?

<p>The contact areas are located at the junction between the cervical and incisal thirds of the crown. (D)</p> Signup and view all the answers

What is the correct order of the statements made in the text?

<p>3, 1, 2, 4 (C)</p> Signup and view all the answers

What is the description referring to?

<p>The anatomical features of a maxillary central incisor tooth (A)</p> Signup and view all the answers

Which statement accurately describes the labial outline of the tooth?

<p>It is straight above the cervical curvature (B)</p> Signup and view all the answers

How is the lingual outline of the tooth described?

<p>It has a shallow concavity ending at the blunt incisal ridge (A)</p> Signup and view all the answers

What is the relationship between the incisal ridge and the line bisecting the root?

<p>The incisal ridge is lingual to the line bisecting the root (D)</p> Signup and view all the answers

Based on the description, which of the following statements is true?

<p>The tooth has a straight labial outline and a shallow lingual concavity (D)</p> Signup and view all the answers

What is the incisal edge?

<p>The cutting or biting edge of an anterior tooth (A)</p> Signup and view all the answers

In which direction is the incisal edge twisted?

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

What is the purpose of twisting the incisal edge in a lingual direction?

<p>To follow the curvature of the lower arch (B)</p> Signup and view all the answers

Which teeth are typically associated with the incisal edge?

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

What is the significance of the number '7' in the given text?

<p>It has no specific meaning in the context provided (B)</p> Signup and view all the answers

Which of the following best describes the tooth being referred to in the given text?

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

What is the significance of the number '2' mentioned in the text?

<p>It refers to the tooth's position in the dental arch. (C)</p> Signup and view all the answers

Which of the following statements is true regarding the maxillary lateral incisor?

<p>It is one of the anterior teeth used for cutting and tearing food. (B)</p> Signup and view all the answers

What can be inferred about the mandibular central incisors based on the given information?

<p>They are larger than the maxillary lateral incisors. (C)</p> Signup and view all the answers

Which of the following crown shapes is associated with the maxillary lateral incisor?

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

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