Dental Anatomy Surface Description
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Questions and Answers

What distinguishes the maxillary first premolar due to a well-defined developmental groove in the enamel?

  • Mesial marginal groove (correct)
  • Lingual cusp length
  • Buccal cusp tip alignment
  • Distal developmental depression
  • Where does the mesial developmental depression (MDD) lie in relation to the mesial contact area?

  • At the lingual cusp
  • At the occlusal third
  • At the distal contact area
  • Immediately cervical (correct)
  • Where is the crest of curvature usually located when viewed from the mesial aspect?

  • Buccally at the junction of cervical and middle thirds (correct)
  • Around the root bifurcation
  • Lingually at the occlusal third
  • At the tip of the lingual cusp
  • What is the characteristic feature of the lingual cusp in relation to the buccal cusp in the maxillary first premolar?

    <p>Shorter by 1mm</p> Signup and view all the answers

    Which part of the root has a measurement that is less than the buccolingual measurement at its cervical portion?

    <p>Tip of the buccal cusp to tip of lingual cusp</p> Signup and view all the answers

    What lies beyond the mesial contact area in the maxillary first premolar?

    <p>Mesial developmental depression (MDD)</p> Signup and view all the answers

    Where are both Buccal and lingual cusp tips aligned with in relation to Buccal and lingual roots?

    <p>On line with Buccal and lingual root</p> Signup and view all the answers

    Where does the mesial marginal ridge intersect according to its location?

    <p>50% of occlusal and middle thirds junction</p> Signup and view all the answers

    What is another name for mesiolingual developmental groove mentioned in the text?

    <p>Mesial marginal groove</p> Signup and view all the answers

    What is a distinguishing feature of the maxillary first premolar which extends from the mesial contact area to a deep depression between roots?

    <p>Mesial developmental depression (MDD)</p> Signup and view all the answers

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