Premolars Flashcards Preview

Oral Anatomy > Premolars > Flashcards

Flashcards in Premolars Deck (39)
Loading flashcards...
1
Q

which premolar has facial HoC that is close to CEJ?

A

Mand 1P

2
Q

Typically, is the mesial or distal marginal ridge more occlusal?

A

Mesial

3
Q

All premolars MD vs FL dimension

A

Wider FL than MD

4
Q

Where are proximal contacts of all premolars located relative to buccolingual midline?

A

Located toward buccal

*Leads to larger lingual embrasure space

5
Q

What premolar has triangular ridges that do not create an oblique ridge?

A

Three cusp type mand PM

6
Q

Which premolars have less prominent buccal ridge

A

Mandibular P

7
Q

Which premolars are closer to having a square outline?

A

Mand P

8
Q

Which maxillary P has broader shoulders and a thinner neck?

A

Max 1P

9
Q

Maxillary Premolar contacts

A

M: O/M junction
D: Middle third

10
Q

What is unique about the max 1P cusp ridges

A

Mesial CR is longer than distal

*Only other tooth is primary max canine

11
Q

Buccal ridge more prominent on which max P

A

Max 1P

12
Q

Max premolar’s lingual cusp tip location

A

mesial to midroot axis

13
Q

Which root is shorter one a max 1P with two roots

A

lingual

14
Q

Max premolars proximal outline shape?

A

trapezoid

15
Q

Which tooth has crown depression that extends into root

A

mesial side of max 1P

16
Q

Location of cusp tips of max 1P w/ two roots

A

tips centered over roots

17
Q

What premolars have mesial marginal ridge groove

A

Max 1P

18
Q

Which max P has longer central groove?

A

max 1P

19
Q

Which max P has more supplemental grooves?

A

Max 2P

20
Q

Max premolars occlusal outline shape?

A

Max 1P: asymmetrical hexagon
*Mesiobuccal cusp ridge comes close to midline
Max 2P: more symmetrical hexagon

21
Q

Which mand P is longer?

A

First

22
Q

Mesial cusp ridge notches more common on which mand P

A

Mand 1P

23
Q

Distal cusp ridge notches more common on which mand P

A

Mand 2 P

24
Q

Cusp ridge nothces more common on max or mand P

A

mand

25
Q

Mand 1P contacts

A

M: O/M junction or middle
D: Occlusal third

26
Q

Mand 2P contacts

A

M:O/M junction
D: Middle third

27
Q

Lingual cusp of Mand 2P is located

A

Mesial to midroot axis

28
Q

If mand 2P has two lingual cusps, which is wider and longer?

A

ML cusp

29
Q

Proximal outline shape of mand P

A

rhomboid

30
Q

Mand 1P root depressions

A

Mesial and Distal

31
Q

Mand 2P root depressions

A

Distal

32
Q

Mand 1P occlusal outline shape

A

Diamond

33
Q

Mand 1P occlusal table shape

A

triangular

34
Q

Mand 2P occlusal outline shape

A

Two cusp: almost rounded

Three cusp: more square

35
Q

Mand 2P occlusal table shape

A

square

36
Q

Mand 1P-which fossa is bigger?

A

Distal

37
Q

Mand 2P w/ two cusp groove shape

A

U or H

38
Q

Mand 2P w/ three cusp groove shape

A

Y

39
Q

Mand 2P oblique ridges and fossae unique characteristics

A

only premolar w/ central fossa

Three triangular ridges but none connect so only tooth w/ no transverse/oblique ridge