Moderate

In the intercuspal position, the lingual cusp of maxillary 2nd premolar contacts the______________?

Correct answer: A. Distal fossa of mandibular 2ndpremolar

  • A. Distal fossa of mandibular 2ndpremolar
  • B. Mesial fossa of mandibular 1st molar
  • C. Distal marginal ridge of mandibular 2ndmolar
  • D. Distal marginal ridge of mandibular 1st premolar

Explanation

The lingual cusp of the maxillary second premolar is a supporting cusp and seats in the distal fossa of the mandibular second premolar. Supporting cusps generally contact opposing fossae or marginal-ridge areas rather than buccal surfaces.

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