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D1 Fall > Premolars > Flashcards

Premolars Flashcards

1
Q

succedaneous teeth

A

teeth that erupt in positions previously occupied by deciduous teeth

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2
Q

function of first premolars

A

-assist in shearing/ cutting food
-support corners of mouth
-function is mastication of food
-maintain vertical dimension b/w nose and chin

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3
Q

developmental lobes of premolar

A

3 on buccal surface
-caused by 2 shallow depressions

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4
Q

maxillary premolars are more oblong in which dimension

A

buccolingual longer than mesiodistal

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5
Q

maxillary first premolar is (facial)

A

the widest premolar

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6
Q

on a max 1st premolar, which cusp ridge is longer

A

mesial is longer than distal

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7
Q

on a max 1st premolar, the buccal cusp tip is _____ of the root axis line

A

distal

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8
Q

max 2nd premolar cusp tip is offset

A

to the mesial

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9
Q

on a max 2nd premolar, the mesial cusp ridge is ______ than the distal cusp ridge

A

shorter (opposite of 1st max premolar)

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10
Q

max 1st premolar has how many roots

A

most likely 2 but can have 1

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11
Q

max 2nd premolar has how many roots

A

1 root

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12
Q

max 1st premolar (lingual)

A

crown and root narrower

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13
Q

which root is shorter on lingual side

A

lingual root is shorter than buccal root

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14
Q

which cusp is shorter on max 1st premolar

A

lingual cusp

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15
Q

max 2nd premolar has a lingual cusp _______ than the lingual cusp on max 1st premolar

A

longer

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16
Q

lingual cusp tip on 2nd max premolar is offset ____

A

mesial

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17
Q

the max 1st premolar has a prominent ___________ on the proximal surface

A

mesial concavity

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18
Q

on a max 1st premolar, proximal view, which cusp tip is longer

A

buccal cusp is longer than lingual

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19
Q

what feature is visible on a proximal view on a max 1st premolar

A

mesial marginal ridge groove

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20
Q

max first premolar is brittle because ……

A

-mesial marginal groove
-mesial concavity
-2 spindly roots

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21
Q

what is the function of a robust canine

A

to protect the weaker premolar

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22
Q

max 2nd premolar has no what compared to 1st max premolar (proximal)

A

-no mesial concavity
-no mesial marginal ridge groove

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23
Q

compare the buccal and lingual cusp tip lengths on a max 2nd premolar looking proximally

A

they are nearly equal in length

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24
Q

triangular ridge

A

any ridge that descends from the cusp tip towards central groove

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25
Q

inclined plane

A

the sloping area found between 2 cusp ridges

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26
Q

developmental groove

A

linear line between parts of teeth

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27
Q

transverse ridge

A

union of 2 triangular ridges crossing transversely

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28
Q

looking occlusal on a max 1st premolar, the lingual cusp is offset

A

mesial

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29
Q

central groove

A

runs mesiodistal, crosses transverse ridge, ends in pits of triangular fossa

30
Q

which groove is only visible in max 1st premolars

A

mesial marginal ridge groove,
-makes central groove appear longer

31
Q

on occlusal, max 2nd premolar, central groove is ________

A

shorter and more irregular than max 1st premolar

32
Q

on a max 2nd premolar, occlusally, the lingual cusp tip is offset _______

A

mesial

33
Q

which max premolar has a more prominent buccal ridge

A

1st max premolar

34
Q

which max premolar is more asymmetrical

A

1st max is more assymetrical

35
Q

which max premolar has a longer central groove

A

1st max premolar

36
Q

which max premolar has more supplemental supplemental grooves

A

2nd max premolar

37
Q

mand premolars are generally ________ than max premoalrs

A

less alike

38
Q

when viewed proximally, mand premolar crowns appear to be tilted to ______

A

lingual

39
Q

on mand premolars which cusps are larger looking proximally

A

buccal cusp larger than lingual cusp

40
Q

all premolars (max and mand) have greater _______ than _______

A

buccolingual length than mesiodistal length

41
Q

mand premolars are shaped like ______ looking occclusal

A

squares

42
Q

mand 1st premolar looks like a ______ while mand 2nd premolar looks like a ______

A

canine, molar

43
Q

mand 1st premolars have a cusp tip ______ of the midline (buccal)

A

mesial

44
Q

on a mand 1st premolar, the ______ contact area is more cervical than the _______

A

mesial more cervical than distal
-ONLY TOOTH WITH THIS FEATURE

45
Q

mand 1st premolars have buccal cusps ______ than mand 2nd

A

sharper (bc they resemble canines)

46
Q

the mand 1st premolars have ______ lingual cusp

A

miniscule, small

47
Q

one mand 1st premolar looking lingual, you can see the entire _______

A

occlusal surface

48
Q

notable hallmarks in mand 1st premolar

A

mesiolingual developmental groove and prominent transverse ridge

49
Q

looking lingually, the mand 1st premolar has its mesial marginal ridge more _____ than distal marginal ridge

A

cervical
-ONLY PREMOLAR TO HAVE THIS

50
Q

mand 1st premolars, mesial, tip of buccal is _____ over the root and the lingual is in ______ over the border of the root

A

centered over the root, in line with border of root

51
Q

1st mand premolar crowns have a greater ______ than the 2nd premolar

A

tilt

52
Q

outlines of mand premolar crowns are

A

rhomboid

53
Q

the crest of curvature (HOC) is on the _______ on the mand 1st premolar

A

on the middle third

54
Q

mesial, the root of a 1st mand premolar has a ______ root with a _____

A

short, deep developmental groove

55
Q

distal, the mand 1st premolar has no ______

A

developmental groove

56
Q

on a first mand premolar, occlusal, what takes up the bulk of the tooth

A

middle labial lobe

57
Q

mand first premolar has more _____ in distal half than mesial half, occlusal

A

bulk

58
Q

mand 1st premolar, occlusal, has a mesiolingual corner that is _____

A

flat

59
Q

mand 2nd premolar has 2 forms

A

3 cusp type (more common) and 2 cusp type

60
Q

mand 2nd premolar is _____ than 1st premolar and has a ______ root

A

larger, longer

61
Q

mand 2nd premolar has a buccal cusp ______ than 1st premolar

A

shorter, more blunt

62
Q

on a mand 2nd premolar, the mesiolingual lingual cusp is _______ and _____ than the distolingual cusp

A

wider and larger

63
Q

on a 2nd mand premolar, the cusp tip lingually is _______ to root axis line

A

mesial

64
Q

what separates 2 lingual cusps

A

lingual groove

65
Q

on a mand 2nd premolar, the marginal ridge is _________ compared to 1st premolar

A

more horizontal

66
Q

on a mand 2nd premolar, there is no

A

ML developmental groove

67
Q

on a 2nd mand premolar, distally, the crown is tipped

A

distally

68
Q

on a mand 2nd premolar (3 cusp type) rank the shapes of the cusps)

A

buccal>mesiolingula>distolingual

69
Q

what is the only premolar with a central fossa

A

mand 2nd premolar (3 cusp type) due to Y shape

70
Q

on a mand 2nd premolar (2 cusp type) the central development groove is

A

crescent shaped

71
Q

groove pattern on a mand 2nd premolar (2 cusp type) can have what shapes

A

U and H

D1 Fall (14 decks)

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