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Morph. > Mandibular 1st Molars (Ye's Version) > Flashcards

Mandibular 1st Molars (Ye's Version) Flashcards

1
Q

What tooth # and view?

A

Mandibular 1st molar; Buccal view

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2
Q

What tooth # and view?

A

Mandibular 1st molar; Lingual view

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3
Q

What tooth # and view?

A

Mandibular 1st molar; Mesial view

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4
Q

What tooth # and view?

A

Mandibular 1st molar; Distal view

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5
Q

What tooth # and view?

A

Mandibular 1st molar; Occlusal view

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6
Q

What tooth # and view?

A

Mandibular 1st molar; Buccal view

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7
Q

What tooth # and view?

A

Mandibular 1st molar; Lingual view

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8
Q

What tooth # and view?

A

Mandibular 1st molar; Mesial view

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9
Q

What tooth # and view?

A

Mandibular 1st molar; Distal view

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10
Q

What tooth # and view?

A

Mandibular 1st molar; Occlusal view

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11
Q

How many cusps does the mandibular 1st molar have? How many are buccal/lingual?

A

5 cusps: 3 buccal/2 lingual

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12
Q

What are the 3 buccal cusps on the mandibular 1st molar?

A

MB, DB, D

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13
Q

What are the 2 lingual cusps on the mandibular 1st molar?

A

ML, DL

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14
Q

Mandibular 1st molar:

How many roots?

A

2 roots

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15
Q

Mandibular 1st molar:

Roots are broad _____ (which direction)

A

B-L

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16
Q

Mandibular 1st molar:

Mesial root curves _______

A

Distally

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16
Q

Mandibular 1st molar:

Distal root pointed in a ______ direction

A

Distal

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17
Q

Mandibular 1st molar: Buccal aspect

Crown is _______ in shape

A

Trapezoidal

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18
Q

Mandibular 1st molar: Buccal aspect

How many cusps are visible? Which cusps are visible

A

All 5 cusps visible

MB > DB > D cusp

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19
Q

Mandibular 1st molar: Buccal aspect

How many grooves are present on this aspect? What are they?

A

2 grooves:
- MB developmental groove
- DB developmental groove

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20
Q

Mandibular 1st molar: Buccal aspect

The MB developmental groove is ______ (shorter/longer) than the DB developmental groove

A

Shorter

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21
Q

Mandibular 1st molar: Buccal aspect

Where does the MB developmental groove terminate?

A

Middle 1/3 of crown

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22
Q

Mandibular 1st molar: Buccal aspect

Developmental groove terminates in the _________

A

Cervical 1/3 of crown

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23
Q

Mandibular 1st molar: Buccal aspect

Cervical line curves ________

A

Apically

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24
Q

Mandibular 1st molar: Buccal aspect

Where is the mesial height of contour (HOC)?

A

Middle 1/3

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25
Q

Mandibular 1st molar: Buccal aspect

Mesial outline is _______ and _______ (convex, concave, straight)

A

convex AND concave

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26
Q

Mandibular 1st molar: Buccal aspect

Where is the distal height of contour (HOC)?

A

Middle 1/3 on distal aspect of distal cusp

27
Q

Mandibular 1st molar: Buccal aspect

Distal outline is ________ and ________ (convex, concave, straight)

A

Convex AND straight

28
Q

Mandibular 1st molar: Buccal aspect (ROOTS)

Does the mesial or distal have a more tapered apex?

A

Distal (both tapered but distal is more)

29
Q

Mandibular 1st molar: Buccal aspect (ROOTS)

Bifurcation is __mm apical to CEJ

30
Q

Mandibular 1st molar: Buccal aspect (ROOTS)

Roots are wider ____ on buccal than lingual

31
Q

Mandibular 1st molar: Buccal aspect (ROOTS)

_____________________ on the mesial and distal aspects of each root

A

Developmental depression

32
Q

Mandibular 1st molar: Buccal aspect (ROOTS)

Developmental depression ________ on root trunk from the CEJ to furcation

33
Q

Mandibular 1st molar: Lingual aspect

How many cusps are visible?

A

3 cusps visible

34
Q

Mandibular 1st molar: Lingual aspect

What cusps are visible from this aspect?

A

ML, DL, & D

35
Q

Mandibular 1st molar: Lingual aspect

Which cusp is wider and taller?

36
Q

Mandibular 1st molar: Lingual aspect

Mesial and distal apsects of the crown visible due to ____________

A

Lingual convergence

37
Q

Mandibular 1st molar: Lingual aspect

2 roots: measure longer on the ______ than the ______ (+1mm)

A

lingual; buccal

38
Q

Mandibular 1st molar: Lingual aspect

Bifurcation is __mm from CEJ

39
Q

Mandibular 1st molar: Lingual aspect

Bifurcation is in line with ___________

A

Lingual developmental groove

40
Q

Mandibular 1st molar: Mesial aspect

___________ in outline form

A

Rhomboidal

41
Q

Mandibular 1st molar: Mesial aspect

How many cusps and roots visible?

A

2 cusps; 1 root

42
Q

Mandibular 1st molar: Mesial aspect

What cusps and root(s) are visible?

A

Visible:

2 cusps: MB, ML
1 root: (mesial)

43
Q

Mandibular 1st molar: Mesial aspect

Buccal height of contour (HOC) is in ____________

A

Cervical 1/3 of crown (buccal cervical ridge)

44
Q

Mandibular 1st molar:

Crown has a ________ tilt to the root axis. This is a characteristic of which teeth?

A

Lingual tilt; mandibular molars and premolars

45
Q

Mandibular 1st molar: Mesial aspect

Lingual height of contour in the _________

A

Middle 1/3

46
Q

Mandibular 1st molar: Mesial aspect

Cervical lines curve _________ - __mm

A

Occlusally - 1mm

47
Q

Mandibular 1st molar: Mesial aspect
Cervical line is higher ________ than ________ (lingually/buccally)

A

lingually; buccally

48
Q

Mandibular 1st molar: Mesial aspect

Root apex lies under the ___ cusp

49
Q

Mandibular 1st molar: Mesial aspect

Slight mesial developmental depression on ______

50
Q

Mandibular 1st molar: Distal aspect

More or less tooth visible? The distal is ________ and more ________ than the mesial.

A

More; shorter and more narrow than mesial

51
Q

Mandibular 1st molar: Distal aspect

What cusp(s) visible?

52
Q

Mandibular 1st molar: Distal aspect

How many roots are visible?

53
Q

Mandibular 1st molar: Distal aspect

Distal marginal ridge is _______ and dips _________

A

Shorter; dips cervically

54
Q

Mandibular 1st molar: Distal aspect

Which landmark is located here?

A

DB developmental groove

55
Q

Mandibular 1st molar: Distal aspect

The DB developmental groove is visible from here. It ends on the ________ surface at the _______ line angle.

56
Q

Mandibular 1st molar: Occlusal aspect

___________ in shape

57
Q

Mandibular 1st molar: Occlusal aspect

MD with of the crown is ________ (greater/lesser) than BL (OPPOSITE OF MAXILLARY)

58
Q

Mandibular 1st molar: Occlusal aspect

Crown is wider _________ (tapers distally)
Crown is wider _________ (tapers lingually)

A

Crown is wider MESIALLY (tapers distally)
Crown is wider BUCCALLY (tapers lingually)

59
Q

Mandibular 1st molar: Occlusal aspect

Crown is wider mesially (tapers ________)
Crown is wider buccally (tapers ________)

A

Crown is wider mesially (tapers DISTALLY)
Crown is wider buccally (tapers LINGUALLY)

60
Q

Mandibular 1st molar: Occlusal aspect

MD width is (greater/lesser) than BL width?

61
Q

Mandibular 1st molar: Occlusal aspect

Order of cusps from largest to smallest

A

MB > ML >_ DL > DB > D

62
Q

Mandibular 1st molar: Occlusal aspect

Most of the _______ surface is visible from the occlusal aspect.

63
Q

Mandibular 1st molar: Occlusal aspect

How many major and minor fossae?

A

1 Major fossa
2 Minor fossae

64
Q

Mandibular 1st molar: Occlusal aspect

What are the fossae?

A

1 Major: Central Fossa
2 minor:
- Mesial triangular fossa
- Distal triangular fossa

65
Q

Mandibular 1st molar: Occlusal aspect

What are the developmental groove names?

A
  • Central dev. groove
  • MB dev. groove
  • DB dev. groove
  • Lingual dev. groove
66
Q

Mandibular 1st molar: Occlusal aspect

Know boundaries of central fossa:

A
  • Distal slope of MB cusp
  • Mesial and distal slopes of DB cusp
  • Mesial slope of D cusp
  • Distal slope of ML cusp
  • Mesial slope of DL cusp
  • Triangular ridges of MB, D, DL and ML cusps

Morph. (26 decks)

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