Lower second secondary premolar tooth at a glance
- What it is
- The permanent lower second premolar, a crushing tooth in front of the first molar, often with three cusps.
- Location
- It lies in the lower dental arch, behind the first premolar; it has one root.
- Function
- It crushes and grinds food.
- Body system
- Digestive · paired (left and right)
- FMA ID
- FMA55692 (Foundational Model of Anatomy)
Key facts
- Typical eruption age: about 11 to 12 years.
- FDI notation: 35 (left) and 45 (right).
- It often has three cusps, one buccal and two lingual.
- After the third molars, 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 lower second secondary premolar tooth
The nearest named structures in the 3D model, measured from the centre of each part:
- Sublingual gland · digestive
- Lower first secondary premolar tooth · digestive
- Lower first secondary molar tooth · digestive
- Lower secondary canine tooth · digestive
- Mylohyoid · muscular
- Lower lateral secondary incisor tooth · digestive
- Genioglossus · muscular
- Gingiva of lower jaw · digestive
- Hyoglossus · muscular
- Lower second secondary molar tooth · digestive
References
- Foundational Model of Anatomy: Lower second secondary premolar tooth (FMA55692). 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.