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DT SC > Mandibular Posterior Teeth > Flashcards

Mandibular Posterior Teeth Flashcards

1
Q

Which buccal cusp ridge is shorter for mandibular 1st premolar?

A

Mesial

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2
Q

How would you describe middle buccal lobe of mandibular 1st premolar?

A

Well developed

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3
Q

How would you describe buccal cusp of mandibular 1st premolar?

A

Large
Pointed
Offset to mesial

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4
Q

Which anterior tooth does mandibular 1st premolar resemble?

A

Mandibular canine

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5
Q

Curvature of which contact area is wider for mandibular 1st premolar?

A

Distal

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6
Q

Buccal surface of maxillary posterior teeth more convex at middle 3rd than mandibular posterior teeth. True/False?

A

False

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7
Q

Is lingual cusp of mandibular 1st premolar short & less developed?

A

Yes

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8
Q

Identification feature of mandibular 1st premolar

A

Mesiolingual developmental groove

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9
Q

What is the characteristic shape of all mandibular posterior teeth from mesial & distal aspect?

A

Roughly rhomboidal crown

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10
Q

Buccal cusp of all A posterior teeth are little B to center.

A

A: mandibular
B: buccal

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11
Q

Buccal outline of mandibular 1st premolar less convex than lingual outline. True/False?

A

False

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12
Q

Where is crest of curvature of buccal & lingual surfaces of mandibular 1st premolar located?

A

Middle 3rd

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13
Q

Which aspect has deeper developmental depression for mandibular 1st premolar - mesial or distal?

A

Mesial

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14
Q

For mandibular 1st premolar, which contact area is broader?

A

Distal

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15
Q

For all posterior teeth, is curvature of cervical line straighter mesially or distally?

A

Distally

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16
Q

For mandibular 1st premolar, which side of root has deeper developmental depression - mesial or distal?

A

Mesial

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17
Q

Maxillary premolars exhibit more variations in form occlusally than do mandibular premolars. True/False?

A

False

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18
Q

What is shape of buccal aspect of mandibular 1st premolar?

A

Roughly trapezoidal

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19
Q

What is shape of occlusal aspect of mandibular 1st premolar?

A

Roughly diamond-shaped but varies

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20
Q

For mandibular 1st premolar, A triangular ridge is bigger than that of B.

A

A: buccal
B: lingual

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21
Q

Mesial fossa of mandibular 1st premolar is more ___ than that of distal.

A

Linear

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22
Q

Mandibular 2nd premolar has ___ buccal cusp than mandibular 1st premolar.

A

Shorter

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23
Q

Crown of which is more rounded - mandibular 1st/2nd premolar?

A

2nd

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24
Q

Which buccal cusp ridge is shorter for mandibular 2nd premolar?

Hint: same as mandibular 1st premolar

A

Mesial

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25
Q

Lingual lobes of mandibular 2nd premolar are A developed than mandibular 1st premolar. Hence, lingual cusp(s) are B. Since lingual cusp(s) are B, C of the occlusal surface can be seen lingually.

A

A: more
B: longer
C: less

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26
Q

Lingual cusp(s) of mandibular 2nd premolar is/are longer than buccal cusp. True/False?

A

False

27
Q

In 3-cusp type mandibular 2nd premolar, which cusp is larger & longer - mesiolingual/distolingual cusp?

A

Mesiolingual

28
Q

Crown of mandibular 2nd premolar tapers ___ lingually than mandibular 1st premolar.

A

Less

29
Q

Which mandibular premolar is larger overall?

A

2nd

30
Q

Mesial marginal ridge for mandibular 2nd premolar (slopes lingually/is at right angles to long axis of tooth).

A

Is at right angles to long axis of tooth

31
Q

The distal marginal ridge of mandibular 2nd premolar is at a A level than that of mesial. Hence, B of the occlusal surface may be seen.

Hint: opposite of mandibular 1st premolar

A

A: lower
B: more

32
Q

Shape of 3-cusp type mandibular 2nd premolar lingual to buccal cusp ridge

A

Square

33
Q

Shape of 2-cusp type mandibular 2nd premolar lingual to buccal cusp ridge

A

Circle

34
Q

Arrange - in ascending order - cusps of 3-cusp type mandibular 2nd premolar according to size

A

Distolingual cusp, mesiolingual cusp, buccal cusp

35
Q

For 3-cusp type mandibular 2nd premolar, developmental groove separating triangular ridge of each cusp converge in a central A & form a B shape on occlusal surface.

A

A: pit
B: Y

36
Q

How would you describe shape of mandibular 1st molar from buccal aspect?

A

Roughly trapezoidal

37
Q

Name cusps of mandibular 1st molar which can be seen buccally

A

Mesiobuccal, distobuccal, distal, mesiolingual & distolingual

38
Q

Name the 2 developmental grooves of mandibular 1st molar which can be seen buccally

A

Mesiobuccal & distobuccal

39
Q

Distal cusp of mandibular 1st molar, which is small, is ___ pointed than either of the buccal cusps.

A

More

40
Q

___ cusp of mandibular 1st molar is widest cusp mesiodistally seen buccally.

A

Mesiobuccal

41
Q

For mandibular 1st molar, approx. level of ends of developmental grooves, at middle 3rd, a developmental A which runs B above C is noticeable.

A

A: depression
B: mesiodistally
C: cervical ridge

42
Q

For mandibular 1st molar, name cusps seen lingually

A

Mesiolingual, distolingual & distal

43
Q

For mandibular 1st molar, which is widest mesiodistally & higher - mesiolingual or distolingual cusp?

A

Mesiolingual

44
Q

Compared to mandibular 2nd premolar, mandibular 1st molar is shorter although wider buccolingually. True/False?

A

True

45
Q

For mandibular 1st molar, lingual cusp ___ than buccal cusp.

Hint: opposite of 2nd premolar

A

Longer

46
Q

For mandibular 1st molar, why more of tooth is seen from distal aspect?

A
  1. Buccal & lingual surfaces of crown converge distally
  2. Distal root narrower buccolingually
  3. Crown placed on root w/ distal inclination to long axis
47
Q

Mandibular 1st molar fatter but shorter than mandibular 2nd premolar. True/False?

A

True

48
Q

What is shape of mandibular 1st molar from occlusal aspect?

A

Roughly hexagonal

49
Q

For mandibular 1st molar, is the crown wider mesiodistally or buccolingually?

Hint: opposite of maxillary 1st molar

A

Mesiodistally

50
Q

For mandibular 1st molar, is buccolingual measurement of crown from occlusal aspect greater mesially or distally?

A

Mesially

51
Q

Arrange in descending order size of cusps of mandibular 1st molar

A

Mesiobuccal, linguals, distobuccal, distal

52
Q

From developmental viewpoint, all mandibular molars have 4 major cusps, whereas maxillary molars have only 3 major cusps. True/False?

A

True

53
Q

Name 3 major fossae on occlusal surface of mandibular 1st molar

A

Central, mesial triangular, distal triangular

54
Q

Name developmental grooves on occlusal surface of mandibular 1st molar

A

Central, lingual, mesiobuccal & distobuccal

55
Q

All developmental grooves of mandibular 1st molar converge in center of central fossa at ___.

A

Central pit

56
Q

For mandibular 1st molar, distal triangular fossa often ___ distinct.

A

More

57
Q

For mandibular 1st molar, buccal & lingual supplemental grooves are ___ common at distal triangular fossa.

A

More

58
Q

Which is shorter cervico-occlusally & narrower mesiodistally - mandibular 1st or 2nd molar?

A

2nd

59
Q

How many developmental groove(s) on buccal aspect of mandibular 2nd molar? Name it/them.

A

1 called buccal developmental groove

60
Q

For mandibular 2nd molar, if part of distal root is in sight mesially, it’s seen ___.

Hint: opposite of mandibular 1st molar

A

Buccally

61
Q

How many cusp(s) does mandibular 2nd molar have?

A

4

62
Q

What is/are differences between mandibular 1st & 2nd molar from distal aspect?

A

Mandibular 2nd molar doesn’t have distal cusp & distobuccal developmental groove

63
Q

Buccal & lingual developmental grooves of mandibular 2nd molar meet central developmental groove at ___ ___ at central pit on occlusal surface.

A

Right angles

64
Q

Shape of mandibular 2nd molar from occlusal aspect

A

Rectangular

DT SC (6 decks)

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