The maxillary first and second premolars are more alike than the mandibular pre- molars and, unlike the mandibular premolars, the maxillary first premolar is larger than the second. The mandibular first premolar is usually the smallest of all premolars.

Which premolar is wider?

The distal view of the second premolars has the same features with the first premolars. Since the distal contact of second premolar is with the first molar, the contact area is slightly larger in size, when compared to the first premolar.

Are both premolars same size?

The main distinctions between premolar and molar teeth are in their size and shape. While a molar has four cusps or points, a premolar has two to three. While premolars are larger and wider than your more narrow canine teeth and have a flat surface area, molars are significantly larger than their bicuspid neighbors.