Maxillary 1st & 2nd Premolars

The geometrical shape of the crown of the maxillary first premolar from the occlusal view is __________?

• Hexagonal

• Ovoidal

• Trapezoidal

• Diamond

When does the calcification of the permanent maxillary first premolars begin?

• 16-18 months

• 2-2.25 years

• 18-21 months

• 2.5 years

The Buccal and Lingual cusp are almost the same length.

• The First Premolar

• The Second Premolar