Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.

Last updated: Sep 12th, 2025

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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.

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Innerbody Research does not provide medical advice, diagnosis, or treatment. You must consult your own medical professional.