Right Lower Second Secondary Premolar Tooth (Dens premolaris secundus mandibularis dexter)
Educational content only — not medical advice.
Anatomy
The right lower second secondary premolar tooth (FDI #45, Universal #29) is situated between the first premolar and first permanent molar in the mandible. Frequently presenting with three cusps (one large buccal and two lingual: mesiolingual and distolingual) arranged around a Y-shaped occlusal groove pattern, it has a single sturdy root and functions as an efficient food-grinding unit.
Clinical notes
The lower second premolar is the third most commonly missing tooth due to congenital agenesis (after third molars and maxillary laterals); when absent, the primary second molar is often preserved long-term.
Related structures
Educational references
FAQ
What is the role of the Right Lower Second Secondary Premolar Tooth?
The right lower second secondary premolar tooth (FDI #45, Universal #29) is situated between the first premolar and first permanent molar in the mandible. Frequently presenting with three cusps (one large buccal and two lingual: mesiolingual and distolingual) arranged around a Y-shaped occlusal groove pattern, it has a single sturdy root and functions as an efficient food-grinding unit.
Why is the Right Lower Second Secondary Premolar Tooth clinically important?
The lower second premolar is the third most commonly missing tooth due to congenital agenesis (after third molars and maxillary laterals); when absent, the primary second molar is often preserved long-term.
Source & license
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