Which one of the following morphological characteristic is representative of all posterior maxillary teeth?
From MD aspect, all posterior teeth have a trapezoidal outline with shortest uneven side toward the occlusal surface.
A, Present posteriorily on first premolar;
B, Exceptions may be the DB root of the maxillary second molar;
C, From mesial and distal aspect, all posterior mandibular teeth, not maxillary posterior teeth, have a rhomboidal outline
Marked mesial concavity on crowns and roots.
Tips of cusps are well within the confines of the root trunks.
From mesial/distal aspect, crowns are rhomboidal in shape.
From mesial/distal aspect, all maxillary posterior crowns are trapezoidal with shortest uneven side toward occlusal surface.