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Dental Anatomy > Molar Comparisons > Flashcards

Molar Comparisons Flashcards

1
Q

Teeth included in maxillary molars

A

1st molars = 1.6, 2.6

2nd molars = 1.7, 2.7

3rd molars = 1.8, 2.8

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2
Q

Maxillary muccal view: give the mesio-distal crown dimensions from largest to smallest

A

1st > 2nd > 3rd

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3
Q

Maxillary buccal view: give the occlusal-cervical crown dimensions from largest to smallest

A

1st > 2nd > 3rd

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4
Q

Maxillary buccal view: compare the mesio-buccal and disto-buccal cusp widths of all 3 molars

A
  • 1st = M-B > D-B
  • 2nd = M-B >> D-B
  • 3rd = M-B >>> D-B
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5
Q

Maxillary buccal view: compare the mesio-buccal and disto-buccal cusp heights of each molar

A
  • 1st = M-B = D-B
  • 2nd = M-B > D-B
  • 3rd = M-B > D-B
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6
Q

Maxillary buccal view: compare the buccal developmental grooves of the molars

A

On 2nd molar, the buccal developmental groove is farther distal, shorter, with no pit at the end

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7
Q

Maxillary buccal view: root lengths

A

1st = 2nd

3rd is shortest

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8
Q

Maxillary buccal view: root separation

A

1st > 2nd > 3rd

NOTE: Fusion of roots common on 3rd and somtimes on 2nd

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9
Q

Maxillary buccal view: root curvature

A

Distal inclincation: 3rd > 2nd > 1st

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10
Q

Define the root trunk

A

The portion of the root located between the CEJ and the furcation

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11
Q

Maxillary buccal view: root trunk dimensions

A

3rd > 2nd > 1st

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12
Q

Maxillary lingual view: 5th cusp (cusp of Carabelli)

A

Present on 70% of 1st molars

Located on P aspect of mesio-palatal cusp

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13
Q

Maxillary lingual view: disto-palatal cusp size

A

1st > 2nd (both width and height)

Absent on 3rd

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14
Q

Maxillary-lingual view: disto-palatal developmental groove

A

Farther distal and shorter on the 2nd

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15
Q

Maxillary-lingual view: palatal root width

A

1st > 2nd > 3rd

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16
Q

Maxillary lingual view: location of palatal root apex

A
  • 1st = aligned with palatal groove
  • 2nd = aligned with disto-palatal cusp tip
  • 3rd = shifted distally
17
Q

Maxillary occlusal view: outline forms

A

1st and 2nd = rhomboidal

3rd = more bulbous and rounded

18
Q

Maxillary occlusal view: bucco-palatal crown dimension

A

1st and 2nd approx. equal

3rd is smaller

19
Q

Maxillary occlusal view: palatal crown width

A

1st > 2nd > 3rd

20
Q

Maxillary occlusal view: distal crown taper

A

3rd > 2nd > 1st

21
Q

Maxillary occlusal view: mesial vs. distal cusp sizes

A
  • Mesio-buccal and mesio-palatal: 1st = 2nd
  • Disto-buccal and disto-palatal: 1st > 2nd
22
Q

Maxillary occlusal view: disto-palatal cusp size

A

1st > 2nd

Absent on 3rd

23
Q

Maxillary occlusal view: Oblique ridge size

A

1st > 2nd > 3rd

24
Q

Numbers of mandibular molars

A

1st = 3.6, 4.6

2nd = 3.7, 4.7

3rd = 3.8, 4,8

25
Q

Mandibular buccal view: mesio-distal crown dimensions

A

1st > 2nd > 3rd

26
Q

Mandibular buccal view: number of buccal cusps

A

1st = 3

2nd and 3rd = 2

27
Q

Mandibular buccal view: number of buccal grooves

A

1st = 2

2nd and 3rd = 1

28
Q

Mandibular buccal view: root length

A

1st > 2nd > 3rd

29
Q

Mandibular buccal view: root separation

A

1st > 2nd > 3rd

30
Q

Mandibular buccal view: root curvature

A

Distal inclination: 3rd > 2nd > 1st

31
Q

Mandibular buccal view: root trunk height

A

3rd > 2nd > 1st

32
Q

Mandibular occlusal view: outline form

A

1st = pentagonal

2nd = rectangular

3rd = round/ ovoid

33
Q

Mandibular occlusal view: bucco-lingual crown dimension

A

1st > 2nd > 3rd

34
Q

Mandibular occlusal view: number of cusps

A

1st = 5

2nd and 3rd = 4

35
Q

Mandibular occlusal view: mesio-buccal prominence

A

Found on second molars

36
Q

Mandibular occlusal view: proximal crown form

A

1st = straight and converge towards the lingual

2nd = curved

3rd = more curved

37
Q

Mandibular occlusal view: Developmental groove patterns

A

1st = zig-zag

2nd = plus-sign

3rd = no pattern

Dental Anatomy (6 decks)

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