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614 Intro to Restorative Dentistry > 8. Mx Premolars > Flashcards

8. Mx Premolars Flashcards

1
Q

Facial: 1st Premolar

The facial outline shape is _

A

trapezoidal

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2
Q

Facial: 1st Premolar

The mesial and distal contours are markedly _

A

convex

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3
Q

Facial: 1st Premolar
Cusp tip is pointed and will be slightly _ to the mesiodistal long axis bisector, making it the only permanent tooth with the mesial cuspal ridge _ than the distal cuspal ridge

A

distal

longer

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4
Q

Facial: 1st Premolar

Mesial proximal contact is more _ placed than the distal (both are in the middle 1/3)

A

cervically

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5
Q

Facial: 1st Premolar
The mesial outline of the crown between the mesial proximal contact and CEJ is said to be slightly _ while the distal is more _

A

concave

convex

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6
Q

Facial: 1st Premolar

The apex of the cervical line is relatively straight but can sometimes be _ to the MD long axis bisector

A

distal

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7
Q

Facial: 1st Premolar

Root is bifurcated with the _ root being wider than the _

A

facial

lingual

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8
Q

Lingual: 1st Premolar

Lingual cusp tip is less pointed and _ shorter than the facial cusp tip

A

1 mm

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9
Q

Lingual: 1st Premolar

Lingual cusp tip is slightly _ to MD bisector

A

mesial

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10
Q

Mesial: 1st Premolar

Greatest contour facially is in the _ third while lingually it is in the _ third

A

Cervical

middle

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11
Q

Mesial: 1st Premolar

FL width of the occlusal table is about _ that of the total FL width

A

1/2

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12
Q

Mesial: 1st Premolar

The triangular ridges converge at a point slightly _ to the FL bisector and are approximately the same length

A

lingual

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13
Q

Mesial: 1st Premolar

T/F The slope of the triangular ridges towards the central groove is the steepest of any other tooth

A

True

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14
Q

Mesial: 1st Premolar

The MMR has a crest almost perpendicular to the FL bisector and is called the _

A

mesial marginal developmental groove

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15
Q

Mesial: 1st Premolar

The area of the crown cervical to the mesial contact will be slightly _

A

concave

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16
Q

Mesial: 1st Premolar

FL measurement of the root trunk is about _ shorter than the overall FL measurement

A

1mm

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17
Q

Mesial: 1st Premolar

This tooth can have one root but will always have _ root canals and _ apical foramina

A

2

2

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18
Q

Distal: 1st Premolar

The crest of the DMR is more _ positioned than the MMR

A

cervically

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19
Q

Distal: 1st Premolar

Distal contact is facial to FL bisector but will be slightly _ on tooth occlusally and _ than the mesial contact

A

higher

wider

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20
Q

Distal: 1st Premolar

Area below the distal contact is smoothly _

A

convex

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21
Q

Distal: 1st Premolar

Root depression is absent and does not extend across cervical line, root trunk is even said to be _ in the cervical 1/3

A

convex

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22
Q

Distal: 1st Premolar

T/F The cervical line has very little or no curvature (Zero)

A

True

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23
Q

Distal: 1st Premolar

Cervical ridge extends _ mm relative to CEJ

A

.5mm

24
Q

Distal: 1st Premolar

distal contact is located in the _ 1/3 of crown occlusogingivally

A

middle

25
Q

Occlusal: 1st Premolar

Outline shape is _

A

hexagonal

26
Q

Occlusal: 1st Premolar

The mesial outline measures _ faciolingually than the distal and reflects the contour of a reverse figure _

A

less

3

27
Q

Occlusal: 1st Premolar

Distal outline is slightly _

A

convex

28
Q

Occlusal: 1st Premolar

Lingual crest is distinctly _ to the MD bisector

A

mesial

29
Q

Occlusal: 1st Premolar

The end of the mesial cuspal ridge is more _ than the distal

A

lingual

30
Q

Occlusal: 1st Premolar

Facial cusp tip is distal to MD bisector and _ the distance from the facial outline to the FL bisector

A

half

31
Q

Occlusal: 1st Premolar
MMR meets the MCR at a _ angle
DMR meets the DCR at a _ angle

A

90

acute

32
Q

Occlusal: 1st Premolar

T/F The lingual cusp tip is nearer the lingual outline than the facial cusp tip is to the facial outline

A

true

33
Q

Occlusal: 1st Premolar

Triangular ridges meets at a deep central groove which is slightly _ to the FL bisector

A

lingual

34
Q

Occlusal: 1st Premolar

T/F There are many supplemental grooves

A

False (minimal)

35
Q

Occlusal: 1st Premolar

The position of the cusp tips produces a more _ or rotated appearance around its long axis

A

twisted

36
Q

Facial: 2nd Premolar

Slightly _ than the 1st premolar

A

smaller

37
Q

Facial: 2nd Premolar

Facial cusp tip is slightly _ to MD long axis bisector and more _ than the tip of the 1st premolar

A

mesial

rounded

38
Q

Facial: 2nd Premolar

Both contacts are higher occlusally in the _ 1/3 and at the same level

A

middle

39
Q

Facial: 2nd Premolar

Both crown outlines are smoothly _ as well as the cervical line, making the crown outline look essentially _

A

convex

oval

40
Q

Facial: 2nd Premolar

Has a single root that is centered or even slightly _ to the MD long axis bisector

A

distal

41
Q

Lingual: 2nd Premolar

T/F The lingual cusp tip is nearly equal in height and in line with the facial cusp tip

A

True

42
Q

Mesial: 2nd Premolar

Outline shape is _

A

trapezoidal

43
Q

Mesial: 2nd Premolar

The MMR is almost _ across the tooth and is continuous

A

horizontal

44
Q

Mesial: 2nd Premolar
Greatest curvature facially is in the _ 1/3
Lingually _ 1/3

A

cervical

middle of middle third

45
Q

Mesial: 2nd Premolar

Contact is slightly _ to the FL bisector

A

facial

46
Q

Mesial: 2nd Premolar

Root tip is slightly _ to FL bisector

A

facial

47
Q

Mesial: 2nd Premolar

Longitudinal root depression but does not cross the _

A

cervical line

48
Q

Distal: 2nd Premolar

Has a _ root depression that is confined to the root

A

longitudinal

49
Q

Distal: 2nd Premolar

Contact is _ faciolingually

A

centered

50
Q

Occlusal: 2nd Premolar

The crown outline shape is _ while the occlusal table is _, giving the tooth a balanced look

A

oval

rectangular

51
Q

Occlusal: 2nd Premolar

The triangular ridges meet at the central groove which is located slightly _ to FL bisector

A

lingual

52
Q

Occlusal: 2nd Premolar

T/F The M and D cuspal ridges of the facial cusp are straight but not aligned like in the 1st premolar

A

True

53
Q

Occlusal: 2nd Premolar

MMR and DMR converge slightly toward the _

A

lingual

54
Q

Occlusal: 2nd Premolar

Has a relatively _ central groove making the marginal ridges appear wider than the 1st premolar

A

short

55
Q

Occlusal: 2nd Premolar

Has a _ appearance because because of the supplemental grooves

A

wrinkled

614 Intro to Restorative Dentistry (8 decks)

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