Maxillary First Premolar Anatomy

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Questions and Answers

What is the shape of the mesial slope on the buccal cusp of the maxillary first premolar?

  • Concave
  • Convex
  • Straight (correct)
  • Curved

Where is the buccal cusp tip located in relation to the buccal root on the maxillary first premolar?

  • Curved distally from the root
  • In line with the lingual border of the lingual root
  • At the apex of the buccal root
  • At the central line of the buccal root (correct)

What is the shape of the distal slope on the buccal cusp of the maxillary second premolar?

  • Concave
  • Straight (correct)
  • Convex
  • Curved

How does the lingual root trunk length compare to the whole root length on the maxillary first premolar?

<p>Half the length mesially and takes only the apical third distally (A)</p> Signup and view all the answers

In which view does the buccal outline of the buccal root incline slightly lingually for the maxillary first premolar?

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

Where is the lingual root apex compared to the buccal root apex on the maxillary first premolar?

<p>Shorter with a blunt apex (A)</p> Signup and view all the answers

Which statement accurately describes the pulp cavity of maxillary premolars in the mesiodistal section?

<p>It has a narrow pulp chamber that is pointed incisally. (A)</p> Signup and view all the answers

In the labiolingual section of maxillary premolars, how do the root canals emerge from the pulp chamber?

<p>As two root canals that emerge separately but reunite to open in the same foramen. (D)</p> Signup and view all the answers

Compared to maxillary first premolars, what distinguishing feature is more prominent in maxillary second premolars?

<p>The buccal ridge is more prominent. (A)</p> Signup and view all the answers

In the occlusal aspect of maxillary premolars, which statement is true about the central groove and fossae?

<p>First premolars have a longer central groove, and the mesial and distal fossae are nearer to the margins. (C)</p> Signup and view all the answers

Which statement accurately describes the cusp ridges of maxillary premolars?

<p>First premolars have longer mesial cusp ridges, and second premolars have longer distal cusp ridges. (A)</p> Signup and view all the answers

Compared to maxillary second premolars, what distinguishing feature is more prominent in maxillary first premolars?

<p>The mesial marginal ridge groove is more observed. (D)</p> Signup and view all the answers

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