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Dental Anatomy > Maxillary Molars > Flashcards

Maxillary Molars Flashcards

1
Q

What is the largest and strongest of the maxillary teeth?

A

Maxillary first molar

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2
Q

Which root of the maxillary first molar is the longest?

A

Lingual root

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3
Q

When do maxillary first molars emerge?

A

Age 6

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4
Q

Max. First molars are wider _____ than _____

A

Wider buccolingually than mesiodistally

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5
Q

The cusp of carabelli is on what cusp of the maxillary first molar?

A

Lingual on the mesiolingual cusp

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6
Q

Which root on the maxillary first molar is the broadest?

A

Mesiobuccal

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7
Q

Which root is the shortest on the maxillary first molar?

A

Distobuccal

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8
Q

Describe the distobuccal line angle

A

Obtuse

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9
Q

Mesiobuccal cusp is _____ than _____, cusp slopes meet at an ______ angle

A

Broader than distobuccal

Obtuse

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10
Q

Distobuccal cusp meet at a ______ angle

A

Right

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11
Q

Buccal ______ ______ divides the two cusps which ends with a slight dip

A

Developmental groove

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12
Q

Describe the cervical line of the maxillary first molar

A

Little curvature, not smooth

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13
Q

Buccal aspect of maxillary first molar. The mesial outline is ______-______ and ______ curving occlusally at contact area

A

Straight-downward and mesially

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14
Q

On the maxillary first molar, the crest or contact area on the mesial side is _____ the distance from cervical line to tip of cusp

A

2/3

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15
Q

On the buccal aspect of the maxillary first molar, the distal outline is ______, distal surface is ______.

A

Convex

Spheroid

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16
Q

On the buccal aspect of the maxillary first molar, the crest of curvature on the distal side is _____ the distance from cervical line to cusp

A

Half

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17
Q

Point of bifurcation above the cervical line is about ____ on the maxillary first molar

A

4mm

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18
Q

True or false, on the maxillary first molar, the root usually averages about 1.5 times he length of the crown

A

False, it is about twice the length of the crown

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19
Q

On the maxillary first molar, the lingual groove goes ____ and _____ to about the _____ of the crown

A

Mesial and cervically to about the center of the crown

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20
Q

On the maxillary first molar, which cusp is the widest and longest?

A

Mesiolingual

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21
Q

On the lingual aspect of the maxillary first molar, the mesial outline of the crown forms almost a _____ angle with the mesiolingual cusp

A

Right

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22
Q

Mesiolingual cusp ridges form an _____ angle

A

Acute

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23
Q

The distolingual cusp of the maxillary first molar is _____

A

Round

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24
Q

On the mesial aspect of the maxillary first molar, there is a shallow _______ just occlusal to the crest

A

Concavity

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25
Q

On the maxillary first molar, describe the crest of curvature on the lingual outline

A

It is in the middle third

26
Q

From the mesial aspect of the maxilllary first molar, which cusp is centered over the long axis of the coinciding root most?

A

Mesiolingual

27
Q

The mesiobuccal root of the maxillary first molar is about _____ the width of the crown

A

2/3

28
Q

On the maxillary first molar, in the mesial aspect, the bifurcation is _____ to the cervical line than on the buccal aspect

A

Closer

29
Q

Why on the distal aspect of the maxillary first molar do we see more of the buccal surface?

A

Due to distal taper

30
Q

On the distal aspect of the maxillary first molar, the ______ measurement is greater at the mesial surface than the distal due to the _____ of the buccal surface

A

Buccolingual

Slant

31
Q

True or false, on the maxillary first molar, the distal marginal ridge dips more sharply to the cervical than does the mesial

A

True. This exposes the triangular ridges

32
Q

Which root on the maxillary first molar is “s” shaped?

A

Distobuccal. It is also the narrowest

33
Q

Describe the shape of the occlusal surface of the maxillary first molar

A

Rhomboidal

34
Q

On the occlusal aspect of the maxillary first molar, the buccolingual measurement is _____ at the mesial

A

Buccolingual

35
Q

On the maxillary first molar, the mesiodistal measurement is _____ just lingual to the contact areas than that just buccal to contact areas

A

Greater

36
Q

List the size of cusps from highest to lowest on the maxillary first molar

A

Mesiolingual
Mesiobuccal
Distolingual
Distobuccal

37
Q

On the maxillary first molar, which cusps form acute angles?

A

Mesiobuccal

Distolingual

38
Q

On the maxillary first molar, which cusps form obtuse angles?

A

Mesiolingual

Distobuccal

39
Q

On the maxillary first molar, which cusps form the primary cusp triangle?

A

Mesiolingual and two buccal cusps

40
Q

Describe the major fossae of the maxillary first molar

A

Central fossa and distal fossa

41
Q

Describe the minor fossae of the maxillary first molar

A

Mesial and distal triangular fossae

42
Q

On the maxillary first molar, the crown is wider mesiodistally on the ____ than on the _____ side

A

Wider mesiodistally on the lingual side than on the buccal side

43
Q

On the maxillary first molar, the oblique ridge is made from the union of the triangular ridge of the _____ cusp and the distal ridge of the ______ cusp

A

Distobuccal

Mesiolingual

44
Q

On the maxillary first molar, the groove that outlines the fifth cusp is called the _______

A

Fifth cusp groove

45
Q

On the maxillary first molar the distolingual cusp is ______, and the cusp ridge extends _______ lingual than the mesiolingual cusp

A

Smooth

Farther

46
Q

Roots on the second maxillary molar are sometimes _____ than the first maxillary molar

A

Longer

47
Q

On the maxillary second molar, the _____ cusp is not as large or as well defined than on the maxillary first molar

A

Distobuccal

48
Q

On the maxillary second molar, the _____ cusp is smaller

A

Distolingual

49
Q

True or false, there may be a fifth cusp on the maxillary second molar

A

False

50
Q

True or false… on the maxillary second molar, the buccolingual measurement is about the same

A

True

51
Q

On the lingual aspect of the maxillary second molar, the _____ cusp may be seen through the area between the _______ and ______ cusps

A

Distobuccal

Mesiolingual and distolingual

52
Q

The apex of the lingual root of the maxillary second molar is in line with the _______ cusp tip, not with the _____ ____ as the first molar

A

Distolingual

Lingual groove

53
Q

Which, the maxillary first or second molar has roots that are most spread, extending over the crown outline?

A

Maxillary first

54
Q

True or false, on the distal aspect of the maxillary second molar you can see some of the mesiobuccal cusp

A

True because distobuccal cusp is smaller

55
Q

Of the maxillary first and second molars, which has larger mesial cusps?

A

They are the same

56
Q

Which tooth, the maxillary first or second molars typically has more supplemental grooves and pits?

A

Maxillary second

57
Q

The maxillary thirst molar is less well developed but usually resembles what tooth?

A

Maxillary second molar

58
Q

True or false. On the maxillary third molar, the roots are rarely fused

A

False, they are usually fused

59
Q

How many lingual cusps on the maxillary third molar?

A

One with no lingual groove

60
Q

On the maxillary third molar, the ____ roots are typically fused but can have a discrete bifurcation at the _____ third

A

Buccal

Apical

61
Q

From which surface of the maxillary third molar can you see more of the occlusal surface? Can you see more on this tooth than the second maxillary molar

A

Distal due to angulation of crown to root

Yes

62
Q

What are the functioning cusps of the maxillary thrid molar?

A

Two buccal, one lingual

Dental Anatomy (5 decks)

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