Dental 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. 💡 Explanation Which of the following is not a type of trait of the permanent maxillary second premolar? ✓ Correct Answer: C. Mesiomarginal groove interrupts mesial marginal ridge.