Which Has an Oblique Ridge (Select All That Apply

Question

Which has an oblique ridge (Select all that apply. )?
A) Maxillary first premolars
B) Maxillary second premolars
C) Maxillary first molars
D) Maxillary second molars
E) Maxillary third molars

Accepted Answer

The maxillary first molar has a strong oblique ridge and the maxillary second molar has a smaller oblique ridge that is usually interrupted by a groove.The maxillary third molar does not have an oblique ridge.Note that the maxillary first and second premolars do not have an oblique ridge;instead the maxillary first premolar has a well-developed central groove and the maxillary second has a short central groove.