Surface Anatomy of Premolars: Lecture Notes
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Questions and Answers

How many lobes do premolars have?

  • Five lobes, two buccally and three lingually
  • Three lobes, two buccally and one lingually
  • Two lobes, one buccally and one lingually
  • Four lobes, three buccally and one lingually (correct)

    • What is the geometric outline of the facial surface of maxillary first premolar?

  • Rectangular
  • Circular
  • Triangular
  • Trapezoidal (correct)

    • What is the function of premolars?

  • Mastication (tearing & grinding) and esthetics (correct)
  • Speech only
  • Growth of the jaws only
  • Enamel organ appearance

    • Where are the contact areas located on the facial surface of premolars?

    <p>At the junction of occlusal and middle 1/3</p> Signup and view all the answers

    How many roots does the maxillary first premolar typically have?

    <p>$80 ext{%} ightarrow 2$ roots, $20 ext{%} ightarrow 1$ root</p> Signup and view all the answers

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