max pre molars Flashcards Preview

dental anatomy > max pre molars > Flashcards

Flashcards in max pre molars Deck (103):
1

haxagon

max premolar 1

2

oval 

max premolar 2

3

diamond

mand pre molar 1

4

square

mand pre molar 2

5

Curve of Spee (called also von Spee's curve or Spee's curvature) is defined as the

curvature of the mandibular occlusal plane beginning at the tip of the lower incisors and following the buccal cusps of the posterior teeth, continuing to the terminal molar.

A image thumb
6

buccal and palatal root

1st max pre molar

7

single root

incisor

canines

pre molars

8

3 types of roots of upper molars

mesiobuccal roots

distobuccal roots

palatal roots

9

mandible single rooted teeth

 

incisors

pre molars

canine

10

lower molars

mesial and distal roots

11

axial inclinations of max second premolars

toward distal from buccal and lingual view

12

axial inclination of max second premolars

toward lingual from 

distal and mesial view

13

14

Resembles maxillary canine

Maxillary First Premolar

15

tf max First Premolar resembles a canine by crown and root are longer

f crown and root are shorter

16

Mesial portion of Maxillary First Premolar

gingival portion ;; concave

cervical portion; convex

17

tf in max 1st pre molars ;Mesial ridge (slope) of B cusp longer than distal slope

t

18

bell shaped crown 

max 1st pre molar

19

max 1st premolar

Prominent buccal ridge

20

tf max 1st pre molar only has prominent MB line angle

f

prominent MB and DB line angles

21

3 facial lobes 

max 1st pre molar

22

tf

there are developmental depressions between three facial lobes on max 1st pre molar

t

23

correct the statement

max 1st pre-molar

Buccal CEJ curves evenly toward the apex in a concaver manner

Buccal CEJ curves evenly toward the apex in a convex manner

24

tf

max 1st pre molar

Proximal contact level width has less width than at CEJ level (

F

Proximal contact level width much wider than at CEJ level (

25

tf max 1st pre-molar

Cusp tip located just distal to center on the crown

T

26

slight concavity ; smoothly convex on max 1st pre-molar

Mesial slope has sl. concavity Distal slope smoothly convex

27

tf 

max 1st pre-molar lingual aspect is Smaller in all dimensions than the buccal aspect

T

28

tf only the crown converge toward lingual

on the lingual view of max 1st pre molar

f

Both crown and root converge toward lingual

29

max 1st pre molar has depressions and ridge on lingual surface

F

Lingual surface is smooth

30

tf Mesial and distal slopes of L cusp approximately form obtuse angle of max 1st pre molar.

f

Mesial and distal slopes of L cusp approximately form right angle

31

Lingual cusp of max 1st pre molar well developed but longer, wider, and bigger than buccal cusp

f

Lingual cusp well developed but smaller, narrower, and shorter than buccal cusp

32

characteristic of max 1st pre molar

Lingual cusp is offset toward the mesial

33

trapezoidal outline shape

mesial aspect of max pre molar

34

tf max 1st pre molar lingual cusp longer than Buccal cusp 

Buccal cusp longer than lingual cusp

35

tf max 1st pre molar 

Occlusal table much smaller than buccolingual diameter of crown

t

36

tf Triangular ridges of each cusp aren't visible

of max 1st pre- molar

Triangular ridges of each cusp visible on mesial side of max 1st pre molar

37

tf

on max 1st premolar B and L cusp tips well within confines of root trunk

T

B and L cusp tips well within confines of root trunk

38

tf max 1st pre molar only has 1 root

f has 2 buccal and lingual

39

longer root with sharper apex on max 1st pre-molar

buccal root of max 1s pre-molar

40

on max 1st pre molar

Root trunk is thin and usually less than half the root length

on max 1st pre molar

Root trunk broad and usually greater than half the root length

41

Mesial marginal ridge perpendicular to long axis,

max 1st pre molar

42

on max 1st premolar

mesial marginal ridge interrupted by mesial marginal groove

43

Mesial concavity on max 1st pre molar

middle of the cervical third extending down to the root bifurcation

44

tf on max 1st pre molar distal aspect is smoother mesial aspect

t

45

Marginal ridge perpendicular to long axis

distal aspect of max 1st pre molar

46

No marginal groove or developmental depression

on distal side of max 1st pre molar

47

occlusalcervical surface shorter;

mesial or distal of max 1st pre molar

distal side

48

more occlusal surface visible of mesial or distal view of max 1st pre molar

Distal

49

slight depression on root

distal aspect of max 1st pre molar

50

mesial vs distal CEJ curvature towards the occlusal

on max 1st pre molar

less curved on the distal 

51

outline form of occlusal of max 1st premolar

Hexagonal outline form

52

tf occlusal of max 1st pre molar is symmetric

f

assymetric

53

wider buccolingually than mesiodistally

max 1st pre molar occlusal surface

54

tf

max 1st premolar have Two well-developed cusps with distinct groove pattern

t

55

Which of the following isnt a distinct groove pattern of

max 1st pre molar

MB

DB

C

M

ML

ML

56

4 developmental lobes

max 1st premolar 

 

M,d

Lingual, mid facial

57

central grove separates

2 triangular ridges on max 1st pre molar

58

tf max 1st premolar only has mesia marginal ridge

f

mesial and distal marginal ridge

 

59

tf pits on max 1st pre molar

exist on the triangular ridges

f

on triangular fossae

60

tf on max 1st pre molar

B & L heights of contour distal to center

f

B & L heights of contour mesial to center

61

line angles on max 1st pre molar

MB and DB

62

tf there is no buccal ridge on max 1st pre molar

F

its very prominent

63

on max 1st pre molar M and D contacts 

facial to center

64

tf

on max 1st pre molar, Buccal cusp tip is distal to center with mesial slope longer than distal

t

65

tf

mesial slope longer than distal on max 1st pre molar(buccal side)

t

66

tf

on max 1st pre molar Buccal cusp ridges form straight line

f

Buccal cusp ridges form diagonal line

67

on max 1st pre molar which ridge is shorter

mesial or distal

Mesial

68

The only premolar that usually has two roots

max 1st pre molar

69

which root is longer in max 1st pre molar

buccal or lingual

buccal 

70

Pulp chamber ----- to B and L pulp canals

in max 1st pre molar

Pulp chamber occlusal to B and L pulp canals

71

tf only one pulp horn on the max 1st premolar

f 1 per cusp in max 1st pre molar

A image thumb
72

max 1st pre molar

kidney shaped cervical cross section

73

max 1st pre molar is more bellshaped than max 2ns pre molar

t

74

tf max 2nd pre molar buccal cusp shorter than max 1st pre molar

t

75

entire crown may appear slightly shorter and narrower but average dimensions are nearly the same)

max 1st and 2nd pre molar

76

tf mesial marginal ridge> distal marginal ridge

(of buccal cusp)(on max 2nd pre molar)

f

<

77

tf max pre molar 2 Less angular than P1

t

78

tf

more prominent facial ridge of max 2nd pre molar than 1st premolar

f

less prominent

79

tf max 2nd premolar has

more rounded appearance of MB and DB line angles

than max 1st premolar

t

80

tf max 2nd premolar has a sharper Buccal cusp tip than max 1st premolar

F

not as sharp

81

tf max 1st pre molar has more curved CEJ than max 2nd premolar

T

82

max 2nd pre molar

Root ----- and smoothly -----

Root conical and smoothly convex

83

max 2nd pre molar same size

lingual and buccal cusp

; no occlusal surface visible

84

max 2nd pre molar

Smoothly -----crown and root; ----- taper to lingual than teeth anterior to it

Smoothly convex crown and root; less taper to lingual than teeth anterior to it

85

lingual aspect of max 2nd pre molar

L cusp tip slightly -------  to center

L cusp tip slightly mesial to center

86

tf on mesial aspect of max 2nd pre molar

B > L cusps 

f

B and L cusps are approximately the same size

87

single root

max 2nd pre molar

88

tf on max 2nd pre molar

there is mesial marginal groove but

No mesial concavity or developmental depression on crown

f

 no mesial marginal ridge

 

89

almost flat

CEJ of max 2nd premlar

(distal view)

90

tf max 2nd pre molar has thin occlusal table

F

wide

91

Smoothly convex

distal aspect of max second pre molar

92

tf

More of occlusal surface is visible from mesial view than distal view of max 2nd pre molar

F

distal view has more occlusal table visible

93

round and ovoid

occlusal view of max 2nd premolar

94

line angles 

rounded on max 2nd pre molar

95

smooth outline

buccal outline of max 2nd pre molar(occlusal aspect)

96

Wider occlusal table (B-L)

occlusal aspect of max 2nd pre molar

97

short central groove with close M and D triangular fossa

occlusal aspect of mx 2nd premolar

compared to 1st

98

B and L cusps nearly centered on buccolingual bisecting line

max 2nd pre molar

99

tf max 2nd pre molar crown appears bilaterally symmetrical

t

100

tf max 2nd pre molar only can have 1 pulp canal

F

can have 2

101

no major root concavities 

on max 2nd pre molar

102

ovoid

cross section max 2nd pre molar

103