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Upper lateral secondary incisor tooth: anatomy, location and function

The permanent upper lateral incisor, a smaller cutting tooth between the central incisor and the canine. It cuts and shears food.

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Highlighted in the model: Upper lateral secondary incisor 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 lateral secondary incisor tooth at a glance

What it is
The permanent upper lateral incisor, a smaller cutting tooth between the central incisor and the canine.
Location
It lies in the upper dental arch, lateral to the central incisor.
Function
It cuts and shears food.
Body system
Digestive · paired (left and right)
FMA ID
FMA55683 (Foundational Model of Anatomy)

Key facts

  • Typical eruption age: about 8 to 9 years.
  • FDI notation: 12 (right) and 22 (left).
  • It is smaller than the central incisor and is sometimes small and peg-shaped.
  • It is one of the teeth most often congenitally missing.

Clinical relevance

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

Structures next to the upper lateral secondary incisor tooth

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

References

  1. Foundational Model of Anatomy: Upper lateral secondary incisor tooth (FMA55683). 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.