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Semester 1 Dental Anatomy > Permanent Mandibular Premolars > Flashcards

Permanent Mandibular Premolars Flashcards

1
Q

What is the shape of all mandibular premolars from the buccal view?

A

pentagon

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2
Q

Which mandibular premolar has a shorter wider crown?

A

second

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3
Q

Which cusp ridge on the buccal surface of all mandibular premolars is shorter?

A

mesial

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4
Q

Which mandibular premolar has less crown taper from contact to cervix

A

second

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5
Q

Which mandibular premolar has a more pointed cusp?

A

first

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6
Q

Which mandibular premolar has a more prominent buccal ridge?

A

first

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7
Q

Which mandibular premolar has a longer root with a blunt apex?

A

second

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8
Q

Which mandibular premolar more commonly has a mesial cusp ridge depression?

A

first

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9
Q

Which mandibular premolar more commonly has a distal cusp ridge depression?

A

second

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10
Q

Which mandibular premolar is more likely to have two lingual cusps?

A

second

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11
Q

Which mandibular premolar has a much narrower crown on the lingual surface?

A

first

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12
Q

Which mandibular premolar has a very short, nonfunctional lingual cusp?

A

first

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13
Q

Which mandibular premolar has a lingual groove evident between two lingual cusps?

A

second

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14
Q

Which mandibular premolar has a mesiolingual groove evident?

A

first

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15
Q

Which mandibular premolar has a mesial marginal ridge that is lower than the distal marginal ridge?

A

first

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16
Q

Which mandibular premolar has a distal marginal ridge lower than the mesial marginal ridge?

A

second

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17
Q

Which mandibular premolar has a higher and more horizontal mesial marginal ridge on the proximal surface?

A

second

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18
Q

Which mandibular premolar has a severe lingual crown tilt?

A

first

19
Q

Which mandibular premolar has a lingual cusp that is much shorter than the buccal cusp?

A

first

20
Q

Can you see a lot of the occlusal surface from the mesial surface on second premolars?

A

no

21
Q

On mandibular premolars, where can you best see the mesiolingual groove from?

A

mesial surface

22
Q

On mandibular premolars, where can you best see the two lingual cusps from?

A

distal surface

23
Q

Which mandibular premolar has a better view of the occlusal surface from the distal?

A

second

24
Q

What is the shape of first premolars from the occlusal?

A

diamond

25
Q

What is the shape of second premolars from the occlusal?

A

square or round

26
Q

Which mandibular premolar has a smaller occlusal table?

A

first

27
Q

Which mandibular premolar has a wider lingual outline?

A

second

28
Q

How many fossae are on first premolars?

A

2

29
Q

How many fossae are on second premolars?

A

2 or 3

30
Q

Is the distal or mesial fossa larger on all premolars?

A

distal

31
Q

what is the pattern type of three-cusp second premolars?

A

Y shape

32
Q

What is the pattern type of two-cusp second premolars?

A

H or U shape

33
Q

If there are two lingual cusps on second premolars, is the lingual or buccal half larger?

A

lingual

34
Q

If there are three lingual cusps on second premolars, is the mesiolingual or distolingual larger?

A

mesiolingual

35
Q

Which mandibular premolar has a crown that is convex on the distal but mesiolingual portion is flat?

A

first

36
Q
A
37
Q

When do mandibular first premolars erupt?

A

10-12 years

38
Q

When do mandibular second premolars erupt?

A

11-12 years

39
Q

What is the root length of mandibular second premolars?

A

14.7 mm

40
Q

What is the root length of mandibular first premolars?

A

14.4 mm

41
Q

When is the crown completed of mandibular first premolars?

A

5-6 years

42
Q

When is the crown completed of mandibular second premolars?

A

6-7 years

43
Q

When is the root completed of mandibular first premolars?

A

12-13 years

44
Q
A

Semester 1 Dental Anatomy (8 decks)

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