Permanent 1st Premolar 9th Yr

Last updated: Jan 22nd, 2025

The permanent first premolar usually appears in the ninth year of life and is part of the secondary, or permanent, teeth. The first premolar, or bicuspid, is preceded by the cuspid and followed by the second bicuspid in the arrangement of the teeth from the midline of the mouth. The bicuspids have somewhat flattened surfaces and specialize in grinding food.