Premolars

Question 1

which premolar has facial HoC that is close to CEJ?

Answer 1

Mand 1P

Question 2

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

Answer 2

Mesial

Question 3

All premolars MD vs FL dimension

Answer 3

Wider FL than MD

Question 4

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

Answer 4

Located toward buccal

*Leads to larger lingual embrasure space

Question 5

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

Answer 5

Three cusp type mand PM

Question 6

Which premolars have less prominent buccal ridge

Answer 6

Mandibular P

Question 7

Which premolars are closer to having a square outline?

Answer 7

Mand P

Question 8

Which maxillary P has broader shoulders and a thinner neck?

Answer 8

Max 1P

Question 9

Maxillary Premolar contacts

Answer 9

M: O/M junction
D: Middle third

Question 10

What is unique about the max 1P cusp ridges

Answer 10

Mesial CR is longer than distal

*Only other tooth is primary max canine

Question 11

Buccal ridge more prominent on which max P

Answer 11

Max 1P

Question 12

Max premolar’s lingual cusp tip location

Answer 12

mesial to midroot axis

Question 13

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

Answer 13

lingual

Question 14

Max premolars proximal outline shape?

Answer 14

trapezoid

Question 15

Which tooth has crown depression that extends into root

Answer 15

mesial side of max 1P

Question 16

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

Answer 16

tips centered over roots

Question 17

What premolars have mesial marginal ridge groove

Answer 17

Max 1P

Question 18

Which max P has longer central groove?

Answer 18

max 1P

Question 19

Which max P has more supplemental grooves?

Answer 19

Max 2P

Question 20

Max premolars occlusal outline shape?

Answer 20

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

Question 21

Which mand P is longer?

Answer 21

First

Question 22

Mesial cusp ridge notches more common on which mand P

Answer 22

Mand 1P

Question 23

Distal cusp ridge notches more common on which mand P

Answer 23

Mand 2 P

Question 24

Cusp ridge nothces more common on max or mand P

Answer 24

mand

Question 25

Mand 1P contacts

Answer 25

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

Question 26

Mand 2P contacts

Answer 26

M:O/M junction
D: Middle third

Question 27

Lingual cusp of Mand 2P is located

Answer 27

Mesial to midroot axis

Question 28

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

Answer 28

ML cusp

Question 29

Proximal outline shape of mand P

Answer 29

rhomboid

Question 30

Mand 1P root depressions

Answer 30

Mesial and Distal

Question 31

Mand 2P root depressions

Answer 31

Distal

Question 32

Mand 1P occlusal outline shape

Answer 32

Diamond

Question 33

Mand 1P occlusal table shape

Answer 33

triangular

Question 34

Mand 2P occlusal outline shape

Answer 34

Two cusp: almost rounded

Three cusp: more square

Question 35

Mand 2P occlusal table shape

Answer 35

square

Question 36

Mand 1P-which fossa is bigger?

Answer 36

Distal

Question 37

Mand 2P w/ two cusp groove shape

Answer 37

U or H

Question 38

Mand 2P w/ three cusp groove shape

Answer 38

Y

Question 39

Mand 2P oblique ridges and fossae unique characteristics

Answer 39

only premolar w/ central fossa

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