Which of the following is not a type of trait of the permanent maxillary second premolar?

A. Buccal view: narrow shoulders (margins of crown; mesio- and disto-occlusal angles).

B. Occlusal table outline: ovoid.

C. Mesiomarginal groove interrupts mesial marginal ridge.

D. Lingual view: buccal profile is not visible.

Correct Answer: Mesiomarginal groove interrupts mesial marginal ridge.

Description: No, or almost never does the mesial marginal developmental groove cross the mesial marginal ridge.

Category: Dental

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