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Upper first secondary premolar tooth: anatomy, location and function

The permanent upper first premolar, a two-cusped tooth that usually has two roots. It crushes and grinds food.

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Highlighted in the model: Upper first secondary premolar tooth. Click any part to read about it, or switch off “Highlight topic” to see the whole body. 3D data: BodyParts3D, © The Database Center for Life Science, CC BY 4.0; meshes simplified and recoloured. The model is an adult male.

Upper first secondary premolar tooth at a glance

What it is
The permanent upper first premolar, a two-cusped tooth that usually has two roots.
Location
It lies in the upper dental arch, behind the canine; it usually has two roots.
Function
It crushes and grinds food.
Body system
Digestive · paired (left and right)
FMA ID
FMA55690 (Foundational Model of Anatomy)

Key facts

  • Typical eruption age: about 10 to 11 years.
  • FDI notation: 14 (right) and 24 (left).
  • It has two cusps, buccal and palatal, and usually two roots.
  • Its nerve supply is from the middle superior alveolar nerve when present, otherwise the anterior and posterior superior alveolar nerves.

Clinical relevance

Dental caries and periodontal disease are the main causes of tooth loss.

Structures next to the upper first secondary premolar tooth

The nearest named structures in the 3D model, measured from the centre of each part:

References

  1. Foundational Model of Anatomy: Upper first secondary premolar tooth (FMA55690). EMBL-EBI Ontology Lookup Service.
  2. OpenStax. Anatomy and Physiology 2e, §23.1 Overview of the Digestive System. Rice University, 2022.
  3. Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.

Related anatomy

Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.