Mandibular first premolar Flashcards Preview

Dental Anatomy (Sagar) > Mandibular first premolar > Flashcards

Flashcards in Mandibular first premolar Deck (13)
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1
Q

Which is wider, buccolabial or mesiodistal?

A

Neither, they are equally wide.

2
Q

Describe the shape of the occlusal outline.

A

Diamond shaped occlusal outline

3
Q

Which cusp is larger? Buccal or lingual?

A

Buccal cusp, lingual cusp is so small that occlusal anatomy can be seen from the lingual surface

4
Q

What line is more rounded? Distolingual or mesiolingual?

A

Distolingual, mesiolingual is flat, which makes the mesial surface narrow.

5
Q

What is the name of the groove that starts at the mesial pit, crosses over the mesial marginal ridge and into the mesiolingual line angle?

A

Mesiolingual groove

6
Q

Distal and mesial HOC

A

Between middle and occlusal third (distal closer to cervical line)

7
Q

It is the only posterior tooth, that has a mesial marginal ridge closer to the cervical line than the distal marginal ridge. T/F

A

True

8
Q

Buccal HOC

A

between middle and cervical third

9
Q

Lingual

A

Middle third, close to lingual cusp apex

10
Q

Does the tooth have a mesial rooth groove?

A

Yes, very prominent

11
Q

What are the two pits referred to as and what tooth do they distinguish this tooth from?

A

Snake eyes, mesial and distal pits that will distinguish this tooth from the mandibular canines. The pits are the apices of the mesial and distal fossa

12
Q

What two ridges form the transverse ridge?

A

The buccal and lingual triangluar ridges, only permanent tooth with tranverse ridge

13
Q

What are the grooves that divide into buccal lobes and what is a relatively prominent structure on the cental lobe that was also present on the maxillary first premolar?

A

Developmental grooves and the buccal ridge is prominent on the central lobe