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Molars Flashcards

1
Q

(True for all molars) Molar crowns are wider in which direction?

A

wider mesiodistally than occlusocervically

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2
Q

(True for all molars) Crown height on the mesial is ____ than on the distal

A

longer

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3
Q

Occlusally, crowns taper (get narrower) from the _____ to the _____, and from the _____ to the ____

A

buccal to the lingual & mesial to distal

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4
Q

Exception: Some ______ may taper from lingual to buccal.

A

maxillary 1st molars

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5
Q

(True for all molars) When viewed from what surface is much of the occlusal surface as well as the facial and lingual surfaces seen?

A

distal

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6
Q

(True for all molars) the buccal crest of curvature (height of contour) is in what third?

A

cervical third

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7
Q

(True for all molars) the lingual crest of curvature (height of contour) is in what third?

A

middle third

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8
Q

(True for all molars) the mesial proximal contact is at/near the junction of what two thirds?

A

junction of the occlusal and middle thirds

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9
Q

(True for all molars) the distal proximal contacts are where?

A

more cervical in the middle third

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10
Q

(True for all molars) Proximal contacts are ____ to the midpoint of the inter proximal surface.

A

buccal

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11
Q

(True for all molars) MB & DB roots are wider in which direction?

A

wider buccolingually than mesiodistally

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12
Q

(True for all MAXILLARY molars) Palatal root is wider in which direction?

A

mesiodistally than buccolingually

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13
Q

What is the widest tooth in the mouth buccolingually?

A

1st maxillary molar

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14
Q

What is the widest tooth in the mouth mesiodistally?

A

1st mandibular molar

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15
Q

Which molars are wider buccolingually and have a square or rhomboid shaped occlusal?

A

maxillary molars

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16
Q

Which molars are wider mesiodistally and have a rectangular or pentagonal shaped occlusal?

A

mandibular molars

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17
Q

Which molars can have 4-5 cusps?

A

mandibular molars

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18
Q

What is the order of cusp size of the maxillary molars?

A

ML > MB > DB > DL

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19
Q

What is the order of cusp size of the mandibular first molars?

A

MB > ML > DL > DB > D

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20
Q

What is the order of cusp size of the mandibular second molars?

A

MB = DB > ML > DL

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21
Q

Maxillary molars have 3 roots, which is the longest?

A

lingual root

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22
Q

Which maxillary molar root is the shortest?

A

distobuccal

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23
Q

Mandibular molars usually have 2 roots, mesial and buccal, which is the longest?

A

mesial root

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24
Q

From the buccal view of maxillary molars which cusps are visible?

A

only buccal cusps

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25
From the buccal view of mandibular molars which cusps are visible?
all cusps are visible
26
(True for all molars) which buccal cusps are longer, mesial or distal?
mesial
27
In the maxillary molars which cusps are more pointed, the buccal or lingual?
buccal
28
In mandibular molars which cusps are more pointed, the buccal or the lingual?
lingual
29
From the lingual view of maxillary molars which cusps are visible?
all cusps are visible
30
From the lingual view of mandibular molars which cusps are visible?
only lingual cusps are visible
31
_______ cervical line of all maxillary molars has concavity. This anatomical feature (1) picks up calculus & (2) is difficult to restore.
distobuccal cervical line
32
In which arch are the crowns of the molars aligned directly over the roots?
Maxillary molars
33
In which arch are the crowns of the molars tilted lingually at the cervix?
Mandibular molars
34
In maxillary molars which cusps are longer, buccal or lingual?
buccal cusps
35
In mandibular molars which cusps are longer, buccal or lingual?
lingual cusps
36
In which arch is the oblique ridge running distobuccal to mesiolingual?
maxillary
37
In which are are there two transverse ridges running directly buccolingually?
mandibular
38
In which molar does the MB root tip line up the the MB cusp?
maxillary 1st molar
39
In which molar does the MB root tip typically not line up with the MB cusp?
maxillary 2nd molar
40
In which molar does the DB root tip typically line up with the DB cusp?
maxillary 1st molar
41
In which molar does the DB root tip typically not line up with the DB cusp?
maxillary 2nd molar
42
In the maxillary 1st molar the palatal root tip lines up with what?
buccal groove
43
Which tooth is more likely to have a 5th cusp (cusp of Carabelli on the ML cusp?
maxillary 1st molar
44
Which tooth is the only tooth with a lingual concavity on the root?
maxillary 1st molar
45
Which cusp in the maxillary 2nd molar is more nearly centered?
ML cusp
46
Which of the maxillary molars has more secondary grooves?
Maxillary 2nd molar
47
Which Maxillary 1st molar root may have 2 canals?
mesial
48
How many cusps does the mandibular 1st molar have?
5 cusps (3 buccal, 2 lingual)
49
How many cusps does the mandibular 2nd molar have?
4 cusps
50
What is the size order of the mandibular 1st molar cusps?
MB>ML>DL>DB>D
51
What is the size order of the mandibular 2nd molar cusps?
MB>ML>DB>DL
52
What is the order of the height of the mandibular 1st molar cusps?
ML>DL>MB>DB>D
53
What is the order of the height of the mandibular 2nd molar cusps?
ML>DL>MB>DM
54
What is the first permanent tooth to erupt?
mandibular 1st molar
55
On the mandibular 1st molar which of the 2 developmental grooves on the buccal is shorter?
Mesiobuccal developmental groove is shorter
56
On the mandibular 1st molar the MB groove terminates in a ____?
buccal pit
57
Which tooth has the largest MD crown dimension of any tooth?
Mandibular 1st molar
58
What is the longest root of any molar?
mesial root of the mandibular 1st molar
59
Mandibular 1st molar roots are inclined _____
distally
60
The mandibular 1st molar has more tapering from the distal proximal contact to the cervical line due to the presence of...
distal cusp
61
in the Mandibular molars which cusps are taller?
Mesial & Lingual
62
Which tooth has the largest crown dimension buccolingually of any mandibular tooth?
Mandibular 1st molar
63
Looking from the mesial which mandibular root is visible ?
Only the mesial root is visible since it is wider and longer than the distal root.
64
Root canals in the mesial root of this molar are more divergent (widely separated)
mandibular 1st molar
65
Root canals in the mesial root of this molar are more parallel (closer together)
Mandibular 2nd molar
66
The mesial root of the mandibular molars has significant depression(s) on the ...
mesial and distal sides of the mesial root
67
Central groove pattern is "zigzag"
Mandibular 1st molar
68
Occlusal groove pattern forms a "cross"
Mandibular 2nd molar
69
The central groove of the mandibular molars is located slightly to the ....
lingual
70
Mandibular molars have lingual ______ of the crown on the occlusal surface.
convergence
71
Mesial root of mandibular molars has how many pulp canals?
2
72
How many cusps does the maxillary 3rd molar have?
3; MB>DB
73
What is the shape of the occlusal surface of the maxillary 3rd molar?
heart shaped
74
Describe the roots of the 3rd molars
Roots are closer, or fused, and curved to the distal
75
How many cusps does the mandibular 3rd molar have?
4-5 cusps
76
What is the shape of the occlusal groove pattern?
+

Dental Anatomy (4 decks)

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