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Dental Anatomy > Molars > Flashcards

Molars Flashcards

1
Q

What’s the occlusal outline form shape for Max 1st molars?

A

Rhomboid

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2
Q

Which occlusal angles tend to be acute angles on Max 1st molars?

A

mesiofacial

Distolingual

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3
Q

Which occlusal angles tend to be obtuse angles on Max 1st molars?

A

Mesiolingual

Distofacial

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4
Q

Which side (buccal or lingual) does the Max 1st molar taper more? Which side has a bigger embrasure?

A

Buccal

Buccal

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5
Q

Which side of maxillary molars is more prone to caries?

A

Lingual

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6
Q

Which side of a mandibular molar is more prone to caries?

A

Buccal

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7
Q

What’s the largest root of the Max 1st molar?

A

Palatal

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8
Q

What’s the smallest root of the max 1st molar?

A

Distobuccal

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9
Q

Is the mesiobuccal or distobuccal root larger on Maxillary 1st molar?

A

Mesiobuccal

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10
Q

What root usually has the 4th canal on the maxillary 1st molar?

A

Mesiobuccal root

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11
Q

Of the three furcations on the maxillary 1st molar which one (m, d, b) is closest to the cervical line?

A

Mesial

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12
Q

What is the order of furcation distance to the cervical line (with closest to the cervical line being first) on the max 1st molar?

A

Mesial>Buccal>Distal

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13
Q

What anatomic landmark on max 1st molar forms the distal boundary of the central fossa?

A

Oblique ridge

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14
Q

What angles on the max 1st molar make up the edges of the oblique ridge? What cusps?

A

Obtuse angles

Mesiolingual/Distofacial cusps

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15
Q

Is the height of the marginal ridge on Max 1st molar the same as the oblique ridge?

A

Yes same height.

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16
Q

What tooth in the mouth has the greatest facial lingual length?

A

Max 1st molar

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17
Q

Which tooth has the cusp of carabelli?

A

Max 1st molar

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18
Q

Which maxillary posterior tooth has the closest FL and MD lengths (squareness)?

A

Max 1st molar

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19
Q

Which max 1st molar cusp is largest and longest?

A

Mesiolingual

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20
Q

Which max 1st molar cusp is the only one not included in the cusp triangle?

A

distolingual cusp

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21
Q

What’s the tooth most likely to be forced into the maxillary sinus during extraction?

A

Max 1st molar

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22
Q

Which tooth has a shorter distolingual groove? The max 1st or 2nd molar?

A

Max 1st molar

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23
Q

On the max 2nd molar what is the only cusp to not be part of the cusp triangle?

A

Distolingual

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24
Q

If the distolingual cusp is missing on the max 2nd molar what is the occlusal shape?

A

heart shaped

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25
Q

Which tooth (Max 1st or 2nd molar) have less divergent roots and which direction are they pointing?

A

Max 2nd molar

distally pointed

26
Q

What does the groove pattern look like for the mand 1st molar?

A

Y shape or dryopethicus

27
Q

What’s the occlusal outline shape of a mand 1st molar?

A

Pentagon

28
Q

What’s the smallest cusp on the mandibular 1 molar?

A

distal

29
Q

What’s the largest cusp of the mandibular first molar?

A

Mesio buccal

30
Q

What are the cusp sizes (large to small) of the mand 1st molar?

A

mb>mL>dL>dB>D

31
Q

Which tooth has the largest M-D crown dimension of any other tooth?

A

mandibular 1st molar

32
Q

What are the only mand teeth to have a wider m-d dimension than facio-lingually?

A

mand 1st molar

33
Q

Which molar has the greatest m-d diameter

A

mand 1st molar

34
Q

What posterior tooth is the only posterior tooth to have wider m-d dimensions than buccal lingual?

A

mand molars

35
Q

Which mand tooth has the largest buccal-lingual dimension of any mand teeth?

A

mand molar

36
Q

Which tooth overall has the biggest buccal lingual dimension?

A

max 1st molar

37
Q

Which mandibular molar has the largest occlusal cervical crown dimension?

A

mand 1st molar

38
Q

Where are the facial surfaces of the mandibular molars located medial to?

A

border of the ascending ramus

39
Q

What’s the difference in developmental grooves with mand 1 and 2 molars?

A

1st molars have 2 developmental grooves

2nd molars only have 1.

40
Q

How many facial cusps does the mand 1 molar have?

A

3

41
Q

Where is the developmental groove between the distofacial and distal cusp located?

A

distofacial (you can still see it facially)

42
Q

How many roots and canals does the mand 1st molar have?

A

2 roots

3 canals

43
Q

How many mesial canals does the mand 1st molar have?

A

2 mesial canals

44
Q

Which molar has the longest root of any other molar?

A

mand 1 molar

45
Q

Which tooth has the greatest root separation of any other tooth?

A

mand 1st molar

46
Q

At mid root cross section of mand 1 molars which root is going to be the largest?

A

mesial root

47
Q

Which root from which tooth has the greatest faciolingual dimension?

A

mand 1st molar mesial root

48
Q

Where does the distobuccal cusp of the mandibular molars occlude with maxillary molars?

A

Central fossa

49
Q

What does the ideal position and height of the lingual cusps of mandibular 1st molar accomodate?

A

working movements

50
Q

Where is the shortest interdental papilla found between?

A

mand 2nd premolar and 1st molar

51
Q

What does the occlusal groove pattern of the mand 2 molar look like?

A

a cross/cruciform

52
Q

From the occlusal view of the mand 2 molar which side (mesial or distal) is wider facio-lingually?

A

mesial 1/3

53
Q

The crown of the mand 2nd molar inclines to which 2 directions?

A

mesial and lingual (think of the bigger mesial cusps weighing it down)

54
Q

Which way is the roots apices of mandibular molars facing? and what about the crown?

A

Roots: facial

Crown facing: lingual

55
Q

Which two teeth only occlude with a single tooth of the opposing arch?

A

Maxillary 3rd molar

Mandibular central

56
Q

Which molar frequently only has 3 cusps?

A

max 3rd molar

57
Q

What shape are maxillary 3rd molars from the occlusal view and why?

A

heart shaped

they are missing the distal lingual cusp

58
Q

Which tooth has the most variation in crown morphology of any tooth? What’s the next tooth with most variation?

A

3rd molars

Maxillary laterals

59
Q

Which tooth has greatest distal root inclination of any tooth?

A

mand 3rd molars

60
Q

Which mandibular tooth has the shortest root?

A

mand 3rd molars

61
Q

Which tooth is the shortest of all permanent teeth?

A

max 3rd molar

Dental Anatomy (6 decks)

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