Lower first secondary premolar tooth at a glance
- What it is
- The permanent lower first premolar, a canine-like tooth with one large and one small cusp.
- Location
- It lies in the lower dental arch, behind the canine; it has one root.
- Function
- It crushes and grinds food.
- Body system
- Digestive · paired (left and right)
- FMA ID
- FMA55693 (Foundational Model of Anatomy)
Key facts
- Typical eruption age: about 10 to 12 years.
- FDI notation: 34 (left) and 44 (right).
- It has a large buccal cusp and a small lingual cusp, so it resembles a canine.
- The mental foramen, where the mental nerve leaves the mandible, usually lies below the premolars.
Clinical relevance
Dental caries and periodontal disease are the main causes of tooth loss.
Structures next to the lower first secondary premolar tooth
The nearest named structures in the 3D model, measured from the centre of each part:
- Lower second secondary premolar tooth · digestive
- Lower secondary canine tooth · digestive
- Sublingual gland · digestive
- Lower lateral secondary incisor tooth · digestive
- Lower first secondary molar tooth · digestive
- Lower central secondary incisor tooth · digestive
- Mylohyoid · muscular
- Gingiva of lower jaw · digestive
- Genioglossus · muscular
- Upper first secondary premolar tooth · digestive
References
- Foundational Model of Anatomy: Lower first secondary premolar tooth (FMA55693). 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.