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Upper second secondary premolar tooth: anatomy, location and function

The permanent upper second premolar, a two-cusped tooth that usually has one root. It crushes and grinds food.

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Highlighted in the model: Upper second 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 second secondary premolar tooth at a glance

What it is
The permanent upper second premolar, a two-cusped tooth that usually has one root.
Location
It lies in the upper dental arch, behind the first premolar; it usually has one root.
Function
It crushes and grinds food.
Body system
Digestive · paired (left and right)
FMA ID
FMA55691 (Foundational Model of Anatomy)

Key facts

  • Typical eruption age: about 10 to 12 years.
  • FDI notation: 15 (right) and 25 (left).
  • Its two cusps are nearly equal in size and it usually has one root.

Clinical relevance

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

Structures next to the upper second 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 second secondary premolar tooth (FMA55691). 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.