Right Lower First Secondary Molar Tooth (Dens molaris primus mandibularis dexter)
Educational content only — not medical advice.
Anatomy
The right lower first secondary molar tooth (FDI #46, Universal #30), commonly designated the 6-year molar, is the largest tooth in the mandibular arch. Presenting a broad rectangular occlusal table with five cusps (three buccal and two lingual) separated by a distinctive Y-groove pattern and supported by two broad roots (mesial and distal), it delivers the primary masticatory crushing force.
Clinical notes
Because it erupts early behind the primary dentition without parental awareness, it is the most caries-susceptible tooth in the mouth; early loss leads to mesial tipping of the second molar and loss of vertical occlusal dimension.
Related structures
Educational references
FAQ
What is the role of the Right Lower First Secondary Molar Tooth?
The right lower first secondary molar tooth (FDI #46, Universal #30), commonly designated the 6-year molar, is the largest tooth in the mandibular arch. Presenting a broad rectangular occlusal table with five cusps (three buccal and two lingual) separated by a distinctive Y-groove pattern and supported by two broad roots (mesial and distal), it delivers the primary masticatory crushing force.
Why is the Right Lower First Secondary Molar Tooth clinically important?
Because it erupts early behind the primary dentition without parental awareness, it is the most caries-susceptible tooth in the mouth; early loss leads to mesial tipping of the second molar and loss of vertical occlusal dimension.
Source & license
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