Dental Anatomy: Maxillary 1st Molar Root Canal Anatomy

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Questions and Answers

What distinguishes the distal aspect from the mesial aspect of a tooth?

  • The distal marginal ridge is more occlusally located. (correct)
  • The contact area is broader and located at the occlusal third.
  • The crown converges mesially.
  • The three roots are not visible.

Which cusp is the largest in size according to the text?

  • DB
  • ML (correct)
  • DL
  • MB

What shape does the occlusal aspect B of a tooth have, based on the text?

  • Rectangular
  • Square
  • Rhomboidal (correct)
  • Circular

What is the distinguishing feature of the lingual outline compared to the buccal outline in a tooth?

<p>Lingual outline is longer than the buccal outline. (B)</p> Signup and view all the answers

What connects the ML cusp and DB cusp in a tooth's occlusal aspect?

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

Where is the central fossa located on a tooth's occlusal aspect?

<p>Roughly triangular and mesial to the oblique ridge (C)</p> Signup and view all the answers

Which groove originates in the central fossa of a tooth and extends distally towards the DTF?

<p>Central dev.groove (C)</p> Signup and view all the answers

How many major fossae are present on a tooth based on the text description?

<p>Two major fossae (A)</p> Signup and view all the answers

Where is the tubercle of Carabelli situated in relation to cusps on a tooth?

<p>On ML cusp (B)</p> Signup and view all the answers

What divides the buccal cusps on a tooth according to the text?

<p>Buccal dev.groove (C)</p> Signup and view all the answers

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