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structure basics > L6 MAX PREMOLARS > Flashcards

L6 MAX PREMOLARS Flashcards

1
Q

Number of the right max right 1st molar

A

5

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2
Q

Number of right max left 1st molar

A

12

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3
Q

Number of right max right 2nd molar

A

4

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4
Q

Number of right max left 2nd molar

A

13

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5
Q

Name the two cusp of the maxillary premolars

A 
Lingual = functional cusp
Buccal = non-functional cusp

DO NOT REFER TO THEM AS BICUSPIDS

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6
Q

What kind of teeth replace deciduous molar teeth

A

Succedaneous teeth

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7
Q

Which lobe of the max premolars forms the buccal cusp

A

Middle lobe

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8
Q

Max premolars develop from how many lobes

A

4

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9
Q

What is the demarcation between the buccal and lingual lobes of the maxillary premolars

A

Central development groove

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10
Q

Outline of max first molar from buccal view

A

Trapezoidal

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11
Q

From buccal view of maxillary first premolar, the mesial cusp arm of buccal cusp is _____ and _____

A

Longer and straighter

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12
Q

From buccal view of maxillary first premolar, the distal cusp arm of the buccal cusp is _____ and more ______

A

Short an more curved

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13
Q

From buccal view of maxillary first premolar, the buccal height of contour is in the

A

Cervical 1/3 of the crown

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14
Q

From buccal view of maxillary first premolar, the mesial contact is in the

A

Middle 1/3

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15
Q

From buccal view of maxillary first premolar, distal contact is in the

Is it generally convex or concave

A

Middle 1/3 boarder and more cervical

Generally convex

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16
Q

From buccal view of maxillary first premolar, the middle buccal lobe become the

A

Prominent buccal ridge and associated development depressions

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17
Q

From buccal view of maxillary first premolar, the less developed mesial and distal lobes become

A

Mesial and distal line angles

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18
Q

From lingual view of maxillary first premolar, the crown tapers _____

A

Lingually

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19
Q

From lingual view of maxillary first premolar, the lingual part of the crown is _____ than the buccal

A

Narrow

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20
Q

From lingual view of maxillary first premolar, the lingual is smoothly

A

Convex

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21
Q

From lingual view of maxillary first premolar, the lingual cusp is ______ and more _______ than the buccal cusp

A

Shorter and more pointed

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22
Q

From lingual view of maxillary first premolar, can you see the buccal cusp

A

Buccal cusp is visible

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23
Q

From lingual view of maxillary first premolar, the lingual cusp is located

A

Mesially

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24
Q

From lingual view of maxillary first premolar, the mesiolingual cusp arm ML is _____ than the distolingual cusp arm DL

A

Shorter, this is opposite of the buccal cup where the ML is longer than the DL

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25
Q

From mesial view of maxillary first premolar, outline in shape is

A

Trapezoidal

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26
Q

From mesial view of maxillary first premolar, How many cusps are visible

A

2 cusp visible - buccal and lingual

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27
Q

From mesial view of maxillary first premolar, which cusp is taller

A

Buccal cusp is taller

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28
Q

From mesial view of maxillary first premolar, the. Buccal height of contour is in the

A

Cervical 1/3

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29
Q

From mesial view of maxillary first premolar, the lingual height of contour

A

Middle 1/3

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30
Q

From mesial view of maxillary first premolar, do they have a mesial developmental depression/concavity

A

Yes, max 2nd premolar do not

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31
Q

From mesial view of maxillary first premolar, which side the dos mesial marginal ridge developmental groove lie more on

A

Lingual

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32
Q

From mesial view of maxillary first premolar, mesial contact area is

A

Middle 1/3 and offset buccally

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33
Q

From mesial view of maxillary first premolar, how many roots

A

50-60% have 2 roots, buccal and lingual

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34
Q

From mesial view of maxillary first premolar, where does the long root trunk extend from

A

From the CEJ to where the root divides (the furcation)

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35
Q

From distal view of maxillary first premolar, list the difference from the mesial view (the absence of:)

A
  1. Mesial concavity
  2. Mesial developmental region
  3. Marginal ridge developmental groove
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36
Q

From distal view of maxillary first premolar, the curvature of cervical line is ____ than mesial

A

Less than mesial

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37
Q

From distal view of maxillary first premolar, distal contact are is in

A

Middle 1/3

  • offset buccally
  • contact is broader
  • located more cervical compared to the mesial
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38
Q

From occlusal view of maxillary first premolar, outline in shape

A

Hexagonal

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39
Q

From occlusal view of maxillary first premolar, the Buccolingual dimension is ____ the the mesiodistal

A

BL greater than MD

40
Q

From occlusal view of maxillary first premolar, the mesial buccal cusp ridge is ______ than disco buccal cusp ridge

A

MB longer than DB

41
Q

From occlusal view of maxillary first premolar, the mesiolingual cusp ridge is ____ than the distolingual cusp ridge

A

ML shorter than DL

42
Q

From occlusal view of maxillary first premolar, describe the buccal and lingual triangular ridges

A

Lingual is less prominent, angled not straight

43
Q

What is a triangular ridge

A
  • A prominent elevation, triangle in cross section

- extend from the tip of a cusp toward the central portion of the occlusal surface of a tooth

44
Q

From occlusal view of maxillary first premolar, what separates thes buccal and lingual cusps

A

Central developmental groove

45
Q

From occlusal view of maxillary first premolar, what groove comes off the central dev. Groove

A

Mesial marginal ridge developmental groove

46
Q

From occlusal view of maxillary first premolar, mesiobuccal and distobuccal supplemental groove rise from what groove

A

Central development groove

47
Q

From occlusal view of maxillary first premolar, where are the mesial and distal development pits located.

A

Deep parts of the mesial and distal fossae

48
Q

From occlusal view of maxillary first premolar, where are the mesial and distal triangular fossa located

A

From the marginal ridges, and make a point/pit at the central development groove

49
Q

How many roots of maxillary 1st premolar

A

2 separate roots buccal and lingual

50
Q

From buccal view of maxillary first premolar, the rooots resemble the roots of the _____

A

Canine (they just shorter)

51
Q

Roots of the max 1st premolar are _____ BL, and _____ MD

A

Broad BL, narrow MD

52
Q

The long root trunk of 1st max premolar is about how long

A

1/2-2/3 length of root, stops at point of bifurcation

53
Q

Maxillary first premolars have a ______ developmental depression on its roots

A

Mesial development depression

54
Q

Describe BL cross section of max 1st premolar roots

A

Two pulp horns and two pulp canals

55
Q

Which pulp canal of the maxillary 1st premolar is larger

A

Buccal is larger

56
Q

The MD cross section of a maxillary first premolar resembles which tooth

A

Canine

57
Q

Transverse cross section of maxillary 1st premolar is what shape

A

Kidney shaped

58
Q

Is the maxillary first or second premolar smaller

A

Second premolar is smaller

59
Q

Is the 1st or 2nd maxillary premolar more rounded and less angular

A

Max 2nd premolar

60
Q

How many roots do the maxillary 2nd premolars have

A

Single root

61
Q

From buccal view of maxillary second premolar, the mesiobuccal cusp ridge is _____ than the distobuccal cusp ridge

A

MB shorter than BD cusp ride

62
Q

From buccal view of maxillary second premolar, is the buccal cusp longer or shorter than the max 1st premolar

A

Buccal cusp is not as long

63
Q

From lingual view of maxillary second premolar, the lingual cup is _______ than the lingual cusp of the 1st max premolar

A

Longer

64
Q

From lingual view of maxillary second premolar, Why is there less visibility of the buccal profile of the tooth

A

Because the lingual cusp is longer than the buccal

65
Q

From mesial view of maxillary second premolar, describe the size comparison of the buccal and lingual cusps

A

Approximately equal in size, but shorter compared to the 1st premolar

66
Q

From mesial view of maxillary second premolar, the mesial contact is in the

A

Middle 1/3 and slightly offset to the buccal

67
Q

From mesial view of maxillary second premolar, do you see a marginal ridge developmental groove

A

NO

68
Q

From mesial view of maxillary second premolar, do you see a mesial developmental depression

A

NO

69
Q

From mesial view of maxillary second premolar, describe the root

A

Single tapered root

70
Q

From distal view of maxillary second premolar, the distal contact is in the

A

Middle 1/3 and offset to the buccal

71
Q

From distal view of maxillary second premolar, outline of tooth

A

Trapezoidal

72
Q

From occlusal view of maxillary second premolar, describe the shape

A

Rounded or oval

73
Q

From occlusal view of maxillary second premolar, the MB and DB line angle are more ______

A

Rounded

74
Q

From occlusal view of maxillary second premolar, there is less _____ convergence

A

Less lingual convergence

75
Q

From occlusal view of maxillary second premolar, the central developmental groove is shorter than the 1st premolar therefore describe the mesial and distal marginal ridge

A

Mesial and distal marginal ridge are WIDER

76
Q

From occlusal view of maxillary second premolar, what give it its wrinkled appearance

A

It’s numerous supplemental grooves

77
Q

Max 2nd premolar have how many roots and canals

A

Single tapered root, 50% have two canals

78
Q

Which root is longer between the 1st and 2nd mainly premolars

A

Neighbor, root length is the same

79
Q

The root of a maxillary 2nd premolar is ____ BL, and ______ MD

A

Broad BL, and narrow MD

80
Q

Do yo observation a development depression on the root of a maxillary 2nd premolar

A

No!

81
Q

Describe buccolingual cross section of maxillary 2nd premolar

A

Two pulp horns (same height), have two pulp canals

82
Q

Describe mesiodistal cross section of maxillary 2nd premolar

A

Same as first pre molar, it resemble the canine

83
Q

Mesial height of contour of maxillary second premolar is

A

Middle 1/3

84
Q

Distal height of contour of maxillary second premolar is

A

Middle 1/3

85
Q

Buccal height of contour of maxillary second premolar is

A

Cervical 1/3

86
Q

Lingual height of contour of maxillary second premolar is

A

Middle 1/3

87
Q

Maxillary first pre molars erupt at what age

A

10-11

88
Q

Maxillary second premolars erupt at what age

A

10-12

89
Q

Initiation of calcification of maxillary first premolar is

A

1 1/2 - 1 3/4 years

90
Q

Initiation of calcification of maxillary second premolar is

A

2-2 1/4 years

91
Q

Completion of root of maxillary first premolar

A

12-13 yers

92
Q

Completion of root of maxillary second premolar

A

12-14 years

93
Q

Completion of crown of maxillary first premolar

A

5-6 year

94
Q

Completion of crown of maxillary second premolar

A

6-7 years

95
Q

While the maxillary 1st and 2nd premolars have approximately the same dimension, which one is larger overall

A

1st maxillary premolar is larger overall

structure basics (18 decks)

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