Occlusal View Features
The outline of the occlusal surface of a maxillary second premolar is more rounded and larger overall than that of a maxillary first premolar from the occlusal view. Thus, the hexagonal outline of the crown from the occlusal is more difficult to see.
Occlusal Table Components
The central groove is shorter on a maxillary second premolar than on a maxillary first premolar (Figure 17-18). This groove ends in a mesial pit and distal pit, which are closer together and thus more to the middle of the occlusal table.