Flashcards in Mandibular second premolar Deck (13):
The height of the lingual cusp is taller in this tooth than the height of lingual cusp in mandibular 1st premolar. T/F
How many cusps can be present?
2 (B and L) or 3 cusps (B, ML, DL). ML is usually the larger cusp on the lingual. If there is only one cusp on the lingual then it is located towards mesial
If 3 cusps, what sturucture separates them?
Describe the shape of the occlusal outline.
Round shape, shorted BL length than the mandibular 1st premolar.
The mesial marginal ridge is closer to the cervical line than the distal marginal ridge. T/F
False, the distal marginal ridge is closer to the cervical line, like it is usually in the posterior teeth. Unlike the mandibular 1st premolar.
Mesial and distal HOC
Middle and occlusal third, the distal HOC is closer to the cervical line
Middle and cervical third
Middle and occlusal third
Define the anatomy
More rounded than the mandibular first premolar andless defined buccal anatomy
When 3 cusps, what is the shape of the occlusal surface
When 2 cusps what is the shape of the occlusal surface
U or H shape
What forms the Y shaped occlusal surface
Formed by the mesial and distal grooves and the lingual grooove