Fig. 3.
This illustration shows the division into two equal segments of the occlusal enamel on the buccal and palatal cusps on the mesial half of a maxillary right first premolar sectioned longitudinally in the mid-buccopalatal plane.
This illustration shows the division into two equal segments of the occlusal enamel on the buccal and palatal cusps on the mesial half of a maxillary right first premolar sectioned longitudinally in the mid-buccopalatal plane.