Permanent Maxillary Molars Flashcards

1
Q

How many buccal cusps do both maxillary first and second molars have and what are they?

A

two, mesiobuccal and distobuccal

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2
Q

Which cusp is wider mesiodistally than distobuccally on both maxillary molars?

A

mesiobuccal

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3
Q

Between which cusps is there a buccal groove evident on both molars?

A

buccal cusps

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4
Q

Which side of the crown tapers shorter? distal or mesial

A

distal

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5
Q

Which cusp is longer? mesiobuccal or distobuccal?

A

mesiobuccal

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6
Q

What is the widest tooth in the maxillary arch?

A

maxillary first molar

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7
Q

How many roots are on both first and second maxillary molars and what are they?

A

three, mesiobuccal, distobuccal, and lingual

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8
Q

Which maxillary molar has roots that are less spread out, less curved, and longer root trunks?

A

second

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9
Q

Which maxillary molar has roots that are more spread out with buccal roots bending distally and root trunks that are relatively long

A

first

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10
Q

Which maxillary molars have longer root trunks?

A

second

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11
Q

Which maxillary molar has roots that bend distally in the apical third?

A

second

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12
Q

Is the mesiobuccal or distobuccal root longer on both maxillary molars?

A

mesiobuccal

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13
Q

Which direction does the crown tilt on the root base with the occlusal surface shorter on distal for both maxillary molars?

A

distally

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14
Q

Which maxillary molar often has a cusp of carabelli?

A

first

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15
Q

How many lingual cusps do the maxillary first molars have and what are they?

A

three, mesiolingual, distolingual, and carabelli

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16
Q

If the second molar has one lingual cusp, which cusp is absent?

A

distolingual

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17
Q

Which cusp is larger than the distolingual cusp on first molars?

A

mesiolingual

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18
Q

What is the smallest cusp on first molars?

A

cusp of carabelli

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19
Q

What root is the longest and does not curve but tapers apically to a blunt apex on both maxillary molars?

A

lingual root

20
Q

What lingual cusp is the cusp of carabelli present on on first molars?

A

mesiolingual

21
Q

Do maxillary second molars have a cusp of carabelli?

A

no

22
Q

On which maxillary molar is the mesiolingual cusp ONLY slightly larger than the distolingual cusp?

A

first

23
Q

On which maxillary molar is the mesiolingual cusp much larger than the distolingual cusp?

A

second

24
Q

Is the mesial or distal half of the crown shorter on both maxillary molars?

A

distal

25
Q

Which marginal ridge is located more cervically on both maxillary molars?

A

distal

26
Q

Which maxillary molar has less root flare from the proximal view of the tooth?

A

second

27
Q

Which root is visible behind the narrower distobuccal root from the distal view on both maxillary molars?

A

mesiobuccal

28
Q

Which root has a longitudinal depression on its mesial surface and possibly a depression on its distal surface dividing the root into buccal and lingual halves indicating the likelihood of two root canals within?

A

mesiobuccal root

29
Q

From the occlusal surface, which cusp appears to be slightly smaller?

A

distolingual

30
Q

Which maxillary molar often has a wider crown on the lingual half of the occlusal surface?

A

first

31
Q

Which maxillary molar often has a narrower crown on the lingual half of the occlusal surface?

A

second

32
Q

What is the shape of the occlusal surface of maxillary first molars?

A

square or parallelogram

33
Q

What is the shape of the occlusal surface of maxillary second molars?

A

twisted parallelogram

34
Q

Which maxillary molar has a larger crown from the occlusal surface?

A

first

35
Q

Which maxillary molar has a smaller oblique ridge on the occlusal surface?

A

second

36
Q

Which maxillary molar has a less prominent mesiobuccal cervical ridge?

A

first

37
Q

How many fossae/cusps are on maxillary first molars and what are they?

A

four on four-cusp type, central fossa (largest), mesial triangular fossa, distal triangular fossa, and the distal fosse (cigar-shaped)

38
Q

On maxillary second molars with three fossa/cusps, what fossa is absent when the distolingual cusp is absent?

A

distal fossa

39
Q

On maxillary second molars that are three cusp type, how many fossae are there and what are they?

A

three, central (large), and two small triangular fossa

40
Q

What are the grooves on four or five cusp type maxillary molars?

A

central, buccal, transverse, and distal oblique

41
Q

What are the grooves on maxillary second molars?

A

central and buccal

42
Q

What cusp is the cusp of carabelli on?

A

mesiolingual

43
Q

Is the distolingual or mesiolingual cusp smaller?

A

distolingual

44
Q

Which cusp is smaller than the mesiobuccal and distobuccal cusp of maxillary molars?

A

meisolinugal

45
Q

What two angles of the crowns of maxillary molars are more acute?

A

mesiobuccal and mesiolingual

46
Q

What cervical ridge is visible for both molars on the occlusal surface?

A

mesiobuccal

47
Q

Is the mesial or distal half of the crown smaller faciolingually for both maxillary molars?

A

distal