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Semester 1 Dental Anatomy > Permanent Mandibular Molars > Flashcards

Permanent Mandibular Molars Flashcards

1
Q

What can you see from the buccal view on mandibular first molars?

A

both lingual cusp tips

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2
Q

How many buccal cusps do mandibular first molars have and what are they?

A

three- mesiobuccal, distobuccal, and distal

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3
Q

How many buccal cusps do mandibular second molars have and what are they?

A

two- mesiobuccal and distobuccal

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4
Q

What is visible from the buccal view on mandibular second molars?

A

both lingual cusp tips

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5
Q

How many buccal grooves do mandibular first molars have and what are they?

A

two- mesiobuccal and distobuccal

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6
Q

How many buccal grooves do mandibular second molars have?

A

one

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7
Q

How many buccal roots do mandibular first and second molars have and what are they?

A

2 roots- mesial and distal

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8
Q

Which mandibular molar has roots that are more widely separated with a short root trunk?

A

first

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9
Q

Which mandibular molar has roots that are less separated or more parallel with a longer root trunk?

A

second

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10
Q

Which mandibular molar has roots that are more curved?

A

first

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11
Q

Which mandibular molar has straighter roots?

A

second

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12
Q

Which mandibular molar has roots that both apices are directed toward the centerline of the tooth and are similar in shape to the handle of pliers?

A

second

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13
Q

Which mandibular molar has a mesial root that bows out beyond the mesial crown outline and then curves back distally ?

A

first

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14
Q

Which mandibular molar has a more pointed apex of the straighter distal root that often lies distal to the distal crown outline?

A

first

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15
Q

Which mandibular molar has a shorter root trunk?

A

first

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16
Q

Which mandibular molar has a distal cusp which is the smallest cusp on the buccal surface?

A

first

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17
Q

Which mandibular molar has a distobuccal cusp which is the smallest cusp on the buccal surface?

A

second

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18
Q

Which mandibular molar has a crown that tapers and is shorter toward the distal?

A

both first and second

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19
Q

Which mandibular molar has a crown that has more distal bulge beyond the root than on the mesial?

A

both first and second

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20
Q

Is the mesial or distal root longer on both first and second molars?

A

mesial

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21
Q

Which groove separetes the mesiolingual cusp from the distolingual cusp?

A

lingual groove

22
Q

Which mandibular molar has less crown taper to the lingual?

A

second

23
Q

Which mandibular molar has less root spread?

A

second

24
Q

Which mandibular molar has more curved roots?

A

first

25
Q

Which surface of the root trunk has a depression between the bifurcation and the cervical line on both mandibular molars?

A

lingual surface

26
Q

On both mandibular molars the cervical line is
relatively straight mesiodistally but may dip in which direction toward the bifurcation between the mesial and distal roots?

A

cervically

27
Q

Which cup is the longest cusp for both first and second molars?

A

mesiolingual

28
Q

Which marginal ridge is more cervical than the mesial marginal ridge on both first and second mandibular molars?

A

distal marginal ridge

29
Q

Which mandibular molar has a mesial root that is less wide faciolingually with a curved tip?

A

second

30
Q

Which mandibular molar has a mesial root that is wide faciolingually with a blunt tip?

A

first

31
Q

Which mandibular molar has a crown that is wider faciolingually than occlusocervically?

A

first

32
Q

On both mandibular first and second molars, which root usually has a deep longitudinal depression on its mesial surface and an even deeper longitudinal depression on its distal depression?

A

mesial root

33
Q

What do the depressions on the mesial and distal roots indicate?

A

likelihood of two root canals in the mesial root, one buccal and one lingual

34
Q

In the proximal surface of both mandibular molars, which root is broader buccolingually so the distal root is not seen from the mesial view?

A

mesial

35
Q

Which marginal ridge on both mandibular molars is more cervical?

A

distal marginal ridge

36
Q

Which crown has the largest mesiodistal dimension of any tooth in the mouth?

A

mesiodistal crown

37
Q

Which mandibular molar typically has five cusps?

A

first

38
Q

Which mandibular molar typically has four cusps?

A

second

39
Q

Which mandibular molar has mesial marginal ridges that are more occlusally located?

A

both first and second

40
Q

Which mandibular molar has a more prominent buccal cervical ridge?

A

second

41
Q

What is the shape of mandibular first molars?

A

pentagon

42
Q

What is the shape of mandibular second molars?

A

rectangular

43
Q

Which mandibular molar has more crown taper from buccal to lingual?

A

first

44
Q

Which mandibular molar has less supplemental (secondary) grooves?

A

first

45
Q

What is the shape of central grooves on second molars?

A

straight

46
Q

What is the shape of central grooves on first molars?

A

zigzag from mesial to distal

47
Q

Which mandibular molar has buccal and lingual grooves that intersect with a central groove like a +?

A

second

48
Q

How many fossae are on both first and second mandibular molars and what are they?

A

three- central, smaller mesial triangular, and distal triangular

49
Q

Which mandibular molar has a crown that taper narrower in the distal third?

A

first

50
Q

Which cusps are the largest on both first and second molars on the occlusal surface?

A

mesiolingual and mesiobuccal

Semester 1 Dental Anatomy (8 decks)

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