Mandibular second premolar Flashcards Preview

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Flashcards in Mandibular second premolar Deck (13):
1

The height of the lingual cusp is taller in this tooth than the height of lingual cusp in mandibular 1st premolar. T/F

True

2

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

3

If 3 cusps, what sturucture separates them?

Lingual groove

4

Describe the shape of the occlusal outline.

Round shape, shorted BL length than the mandibular 1st premolar.

5

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.

6

Mesial and distal HOC

Middle and occlusal third, the distal HOC is closer to the cervical line

7

Buccal HOC

Middle and cervical third

8

Lingual HOC

Middle and occlusal third

9

Define the anatomy

More rounded than the mandibular first premolar andless defined buccal anatomy

10

When 3 cusps, what is the shape of the occlusal surface

Y shape

11

When 2 cusps what is the shape of the occlusal surface

U or H shape

12

What forms the Y shaped occlusal surface

Formed by the mesial and distal grooves and the lingual grooove

13

At what structure do the three groove in the 3 cusped tooth connect.

Central pit