Lower lateral secondary incisor tooth at a glance
- What it is
- The permanent lower lateral incisor, a chisel-shaped cutting tooth between the central incisor and the canine.
- Location
- It lies in the lower dental arch, lateral to the central incisor.
- Function
- It cuts and shears food.
- Body system
- Digestive · paired (left and right)
- FMA ID
- FMA57141 (Foundational Model of Anatomy)
Key facts
- Typical eruption age: about 7 to 8 years.
- FDI notation: 32 (left) and 42 (right).
- It is slightly larger than the central incisor and has a single root.
- Its pulp and periodontium are supplied by the inferior alveolar nerve (CN V3), so an inferior alveolar nerve block numbs the lower teeth on that side.
Clinical relevance
Dental caries and periodontal disease are the main causes of tooth loss.
Structures next to the lower lateral secondary incisor tooth
The nearest named structures in the 3D model, measured from the centre of each part:
- Lower central secondary incisor tooth · digestive
- Lower secondary canine tooth · digestive
- Lower first secondary premolar tooth · digestive
- Sublingual gland · digestive
- Lower second secondary premolar tooth · digestive
- Lip · digestive
- Gingiva of lower jaw · digestive
- Upper lateral secondary incisor tooth · digestive
- Upper central secondary incisor tooth · digestive
- Lower first secondary molar tooth · digestive
References
- Foundational Model of Anatomy: Lower lateral secondary incisor tooth (FMA57141). EMBL-EBI Ontology Lookup Service.
- OpenStax. Anatomy and Physiology 2e, §23.1 Overview of the Digestive System. Rice University, 2022.
- 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.