The function of this premolar is similar to that of canines in regard to tearing being the principal action during mastication, commonly known as chewing.

Around 10-11 years of age, the primary molars are shed and the permanent premolars erupt in their place.

In the universal system of notation, the permanent maxillary premolars are designated by a number.

In the Palmer notation, a number is used in conjunction with a symbol designating in which quadrant the tooth is found.

The international notation has a different numbering system than the previous two, and the right permanent maxillary first premolar is known as "14", and the left one is known as "24".