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DMD 5300 Dental anatomy 3 (molars) > Molars > Flashcards

Molars Flashcards

1
Q

Aside from mastication, supporting cheeks, and keeping the tongue continued within the arches, what is the other function unique to molars?

A

maintenance of vertical dimension

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2
Q

Which molars are the shortest teeth in the mouth? (max or mand?)

A

mandibular!

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3
Q

True or False.
Aside from molars being the shortest teeth occlusocervically, they are generally larger in every dimension than other teeth.

A

True.

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4
Q

True or false.

All molars from the buccal view have a distal to mesial taper.

A

False!

All molars have a mesial to distal taper.

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5
Q

Crowns of molars get ____ as you move mesiodistally.

A

smaller.

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6
Q

the buccal HOC is in the ____ third, the lingual HOC is in the ____ third.

A

buccal HOC- cervical

lingual HOC- middle third

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7
Q

Which two molars are likely to have 5 cusps?

A

Maxillary 1st and Mandibular 1st molars.

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8
Q

Which molar would have a lingual to buccal taper?

What cusp causes this?

A

Maxillary 1st molar. because of large distolingual cusp…

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9
Q

Which two teeth could exhibit a lingual divergence?

A

Maxillary 1st molars and mandibular 2nd premolars (3 cusp type)

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10
Q

All molars except the maxillary 1st molar exhibit a ___ to ___ taper.

A

buccal to lingual taper

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11
Q

Maxillary molars are wider in the _____ dimension then the ____ dimension.

(occlusal view)

A

wider in the faciolingual dimension than the mesiodistal dimension.

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12
Q

True or False.

The maxillary 1st molar has a shorter root trunk than the maxillary 2nd molar.

A

True, Maxillary 2nd molar has a LONGER root trunk.

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13
Q

As you move posteriorly which cusp gets progressively smaller on maxillary molars?

A

distolingual cusp

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14
Q

Mandibular molars are wider in the ____ dimension than the ____ dimension.

(occlusal view)

A

wider in the mesiodistal dimension than the buccolingual dimension.

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15
Q

on mandibular 1st molars you would have _ buccal cusps and _ lingual cusps.

A

3 buccal cusps, 2 lingual

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16
Q

Maxillary molars typically have _ roots, while mandibular molars have ___ roots.

A

3 roots=max

2- mand

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17
Q

Where would the furcations be on maxillary molars?

A

buccal, mesial and distal

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18
Q

where would the furcation be on mandibular molars?

A

buccal and lingual

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19
Q

Only ____ molars have oblique ridges.

A

maxillary molars

would have oblique ridges extending from the mesiolingual to the distobuccal cusps

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20
Q

Roots get (taller or shorter ) and (more or less divergent) as you move posteriorly ?

A

Roots get shorter and less divergent as you move posteriorly.

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21
Q

The tallest root on maxillary molars is the?

A

palatal/ lingual root

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22
Q

the smallest root on the maxillary molars is the?

A

distalbuccal root

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23
Q

which molars would exhibit a lingual tilt and requiring you to align the bur perpendicular to the occlusal surface?

A

mandibular molars (also seen in mandibular premolars )

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24
Q

which root in longer, wider, and more curved on mandibular molars?

A

mesial root.

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25
Q

would 1st of 2nd molar roots be MORE distally inclined ?

A

2nd molars roots would be more distally inclined than 1st.

would also be LESS divergent

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26
Q

nonsuccadaneous teeth are?

A

Permanent Max/mand molars

27
Q

Which teeth have the greatest variability in form? Which teeth have second greatest variability?

A

1st- 3rd molars

2nd- maxillary lateral incisors

28
Q

Oblique ridges found on the maxillary molars would be formed from the union of the ___ ____ ___ of the mesiolingual cusp and then ____ ____ of the distobuccal cusp.

A

distal cusp ridge of the mesiolingual cusp and the triangular ridge of the distobuccal cusp

29
Q

How many roots are visible from the buccal aspect of maxillary first molars?

A

3

30
Q

Which tooth has the greatest morphological variance ?

A

Maxillary 3rd molars.

31
Q

Which tooth in the mouth would have a mesiolingual developmental groove?

A

mandibular 1st premolars.

32
Q

Which teeth would have prominent labial ridges?

A

Canines

33
Q

Which molars is the most symmetrical ?

A

mandibular second molar

34
Q

Which root of a maxillary 1st molar commonly has two root canals?

A

mesiobuccal root

35
Q

Maxillary 1st molars:

the mesiobuccal cusp ridges meets at an ___ angle, and the distobuccal cusp ridges meets at an ____ angle.

A

mesiobuccal= obtuse angle

distobuccal- acute angle

36
Q

Name the cusp in order from largest to smallest on the maxillary 1st molars.

A

Mesiolingual

mesiobuccal

distobuccal

distolingual

cusp of carabelli

37
Q

what are the two obtuse angles of the rhomboid shaped maxillary 1st molars?

two acute?

A

mesiolingual and distobuccal =obtuse

mesiobuccal and distolingual =acute

38
Q

which root is longer and more curved on mandibular molars?

and often has two root canals

A

mesial root

39
Q

which is the widest of the 3 buccal cusps on mandibular 1st molars?

A

mesiobuccal cusp

40
Q

mandibular 1st molars:

which of the two buccal grooves is shorter and often extends to the middle of the crown and end in a pit/depression?

A

mesiobuccal groove.

41
Q

Name the cusps from largest to smallest of the mandibular 1st molars.

A

Mesiobuccal

mesiolingual=distolingual

distobuccal

distal

42
Q

which two cusp on mandibular 1st molars are similar in size?

A

mesiolingual and distolingual

both lingual cusps are the same size

43
Q

which molar would you find a cervical ridge that is not as prominent of the buccal bulge of primary teeth?

A

mandibular 1st molar

44
Q

on what tooth and what cusp would you likely find the cusp of carabelli?

A

maxillary 1st molars,

on the mesiolingual cusp

45
Q

which cusps are taller (lingual or buccal) on mandibular molars?

A

lingual cusps are taller…

46
Q

maxillary 1st molars:

The (lingual or buccal) groove be parallel to the long axis of the distobuccal root?’

The (lingual or buccal) groove often begins as an extension of the distal oblique ridge and ends in a pit.

A

buccal groove is parallel to the long axis of the distobuccal root.

lingual groove often begins as an extension of the distal oblique ridge and ends in a pit..

47
Q

Maxillary 1st molars:

the apex of which root lines up with the occlusal tip of the lingual groove?

A

palatal root

48
Q

what is the occlusal shape of maxillary 1st molars?

A

rhomboidal

49
Q

what is the occlusal shape of mandibular 1st molars?

A

hexagonal

50
Q

what is the occlusal shape of maxillary 2nd and 3rd molars?

A

rhomboidal or heart shaped (depending on size of distolingual cusp)

51
Q

what is the occlusal shape of mandibular 2nd molars?

A

rectangular, due to all the cusps being almost the same size.

52
Q

On maxillary 1st and 2nd molars, what three cusps would form the primary cusp triangle (aka trigon?)

A

mesiolingual, mesiobuccal, and distobuccal

53
Q

on which molars would you expect to see every cusp with a triangular ridge but none meeting in a transverse ridge?

A

mandibular 1st molars

54
Q

on which molars would you espect to see every cusp with a triangular ridge and they form 2 transverse ridges?

A

mandibular 2nd molars

55
Q

what are the major fossa of maxillary 1st molars?

minor ?

A

central (largest) and distal

minor= mesial and distal triangular fossa

56
Q

what are the major fossa mandibular 1st molars?

minor?

A

central only.

minor= mesial and distal triangular fossa

57
Q

which maxillary molar would have the most secondary grooves?

A

max 3rd molars

58
Q

how many groove are visible on maxillary 1st molars?

A

7.

59
Q

how could you describe the central groove on mandibular 1st molars?

what 3 grooves would form a Y shape?

A

M or W shaped.=central groove

mesiobuccal, distobuccal and lingual grooves= Y shape

60
Q

how many grooves would you find on mandibular 2nd molars?

A

3, lingual groove, buccal groove (often ends in pit), and central groove

61
Q

the ____ crown is covered with enamel and may change due to attrition/trauma.

A

anatomical crown

62
Q

the ___ crown is the amount of tooth visible due to gingival level, eruption, and wear.

A

clinical crown.

63
Q

the ___ root is the area of root embedded in the alveolar bone.

A

clinical root.

64
Q

the ___ root is the area of root covered by cementum

A

anatomical root.

DMD 5300 Dental anatomy 3 (molars) (1 decks)

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