Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Dental Development and Anatomy > Molars > Flashcards

Molars Flashcards

(97 cards)

Start Studying
1
Q

Molars

_____ developmental lobes

_____ - 5 lobes

A

4-5

mandibular M1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q 
Molars
Basic Occlusal Anatomy: 
Cusps
\_\_\_\_\_ 
B-L Ridges 
\_\_\_\_\_ 
Fossae
A

MD ridges

Grooves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Maxillary First Molar

Eruption: _____

A

6 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Buccal View
! The M-D crown dimension is _____ than the O-C crown dimension*
! The outline form of the crown is a _____

A

greater

trapezoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Buccal View
! The tips of all the major cusps are visible except the _____ cusp tip
! The _____ cusp is visible between the MB and DB cusp

A

DL

ML

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Buccal View
! The MB cusp is approximately the same _____ as the DB cusp.
“ Sometimes it is slightly _____ than the DB cusp
! The MB cusp is _____ than the DB cusp

A

height
higher
wider

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Buccal View
! The buccal groove extends cervically to the _____ third of the crown surface and occasionally there may be a _____ where the groove terminates

A

middle

pit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Buccal View
! The M contact area is located at the junction of the _____ and _____ thirds
! The D contact is located in the _____ third near the O/C center

A

occlusal
middle
middle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Buccal View
! There are _____ roots that are nearly the same length
“ _____, _____, and _____
“ the _____ root is the
largest
! The MB root is slightly _____ than the DB root

A

three
MB, DB, P
palatal
longer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Buccal View
! Root trunk
! _____ – where the root trunk separates into individual roots
! The _____ furcation separates the MB and DB roots

A

furcation

buccal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Mesial View
! The B-L crown dimension is _____ than the O-C crown dimension
! The outline form of the crown is _____ from the proximal view

A

greater

trapezoidal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Mesial View
! Major cusps visible from a mesial view are the _____ and _____
And when present:
! 5th Cusp:
“ _____ is visible if present (_____ of the time)

A

MB
ML
cusp of carabelli
70%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Mesial View
! The B height of contour is located in the _____ third of the crown
! The L height of contour is located in the _____ third of the crown
! When teeth have a large Cusp of Carabelli, the lingual height of contour is located in the _____ 1/3 of this cusp

A

cervical
middle
occlusal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Mesial View
! The MB root is wide _____
! The DB root is hidden by the MB root from the _____ view
! The buccal cusp is about _____ longer than the lingual cusp

A

buccolingually
mesial
1 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Mesial View
! The palatal root diverges (flares) to the _____
! The palatal root is described as “_____” shaped

A

lingual

banana

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

UNIQUE CHARACTERISTICS Maxillary First Molar–Mesial View
! The mesial furcation
separates the _____ root and the _____ root

A

MB

P

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View
! The _____ crown dimension is greater than the _____ crown dimension**
! The crown is wider BL in the _____ half of the crown
**True for ALL _____

A

BL
MD
mesial
max molars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View

! The _____ M-D crown dimension is greater or equal to the _____ M-D crown dimension

A

lingual

buccal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q 
UNIQUE CHARACTERISTICS
Maxillary First Molar –
Occlusal View
!  The Cusp of Carabelli may be:
" distinctly \_\_\_\_\_ 
" \_\_\_\_\_ visible 
" not present at all
# Missing \_\_\_\_\_ of the time
" If present – will be on both \_\_\_\_\_ and \_\_\_\_\_ sides
A 
formed
barely
30%
right
left
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View
! The outline of the occlusal surface resembles
“ a _____
“ a _____

A

parallelogram

rhomboid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View
! The M proximal contact is located _____ to the center of the crown
! The D proximal contact is located at the _____ of the crown

A

B

center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View
! Cusp size: (from largest to smallest):
“ _____
“ _____
“ _____
“ _____
“ _____

A 
ML
MB
DB
DL
cusp of carabelli
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View
! The large ML cusp has _____ triangular ridges
“ _____
“ _____

A

two
mesial
distal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View
! The M triangular ridge of the _____ cusp meets the triangular ridge of the _____ cusp to form a _____ ridge
! The distal ridge of the _____ cusp and the triangular ridge of the _____ cusp form the _____ ridge

A 
ML
MB
transverse
ML
DB
oblique
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View ! The _____ crosses the occlusal surface in a _____ direction*** ! Crossed by a developmental groove BUT NOT as deeply as the rest of the _____ ! The oblique ridge is at about the same height as the _____ ridges
oblique ridge diagonal central groove marginal ridges
26
UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View ! There is a unique groove that separates the M and D triangular ridges of the ML cusp " Called a “_____” ! There is a distinct triangular arrangement of the _____, _____, and _____ cusps " Termed a _____
stuart groove MB, DB, ML trigone
27
UNIQUE CHARACTERISTICS Maxillary First Molar – Occlusal View ! There are 5 major grooves present: " _____ " _____ " Distolingual or Distal oblique " Lingual " _____ of the oblique ridge (not as _____ as the other grooves)
central facial transverse deep
28
UNIQUE CHARACTERISTICS Maxillary First Molar–Distal View ! The D marginal ridge is located more _____ than the M marginal ridge ! The distal furcation separates the _____ and _____ roots " Located closer to the _____ than the other furcations " Root trunk _____ from this view
``` cervical DB P root tips longer ```
29
UNIQUE CHARACTERISTICS Maxillary First Molar–Distal View ! The DB root is _____ than the MB root and not as wide _____. ! The DB root is the _____, shortest, and _____ root ! The DB root apex is more _____ than the MB root apex
``` shorter B-L smallest weakest pointed ```
30
UNIQUE CHARACTERISTICS Maxillary First Molar– Lingual View ! Little if any of the proximal surfaces are visible from a _____ view " the lingual half of the crown usually is equal to or greater _____ than the buccal half of the crown " No _____ taper
lingual MD lingual
31
UNIQUE CHARACTERISTICS Maxillary First Molar– Lingual View ! The ML cusp is usually the _____ and _____ cusp on the first molar ! The DL cusp is _____ and _____ than the ML cusp
largest longest shorter narrower
32
UNIQUE CHARACTERISTICS Maxillary First Molar– Lingual View ! The Cusp of Carabelli is on the lingual surface of the _____ cusp. ! If present, it is located on _____. ! The Cusp of Carabelli is located about _____ apical to the ML cusp tip
ML both sides of the jaw 2mm
33
UNIQUE CHARACTERISTICS Maxillary First Molar– Lingual View ! The DL groove originates on the _____ and goes onto the lingual surface becoming the _____. ! The buccal roots are visible from a _____ view due to their wide M-D spread
occlusal surface lingual groove lingual
34
UNIQUE CHARACTERISTICS Maxillary First Molar– Lingual View ! The _____ root is the longest, largest, and strongest of the 3 first molar roots ! The P root is wider _____ than B-L
P | M-D
35
Maxillary Second Molar Eruption: _____
12-13 years
36
UNIQUE CHARACTERISTICS Maxillary Second Molar–Buccal View ! The M-D crown dimension is _____ than the O-C crown dimension ! The outline form of the crown is a _____
greater | trapezoid
37
UNIQUE CHARACTERISTICS Maxillary Second Molar–Buccal View ! The _____ cusp is higher than the _____ cusp. ! The _____ cusp is wider than the _____ cusp
MB DB MB DB
38
UNIQUE CHARACTERISTICS Maxillary Second Molar–Buccal View | ! The B groove extends onto the B surface, but NOT to the _____ third of the crown surface like the _____
middle | first molar
39
UNIQUE CHARACTERISTICS Maxillary Second Molar–Buccal View ! The M contact area is located at the junction of the _____ and _____ thirds ! The D contact is located in the _____ third " It is more _____ than the mesial contact
occlusal middle middle cervical
40
UNIQUE CHARACTERISTICS Maxillary Second Molar–Buccal View ! There are _____ roots that are nearly the same length " _____, _____, and _____ " The P root is the _____ ! The _____ and _____ roots are about the same length " Less _____ apart M-D
``` three MB, DB, P largest MB DB spread ```
41
UNIQUE CHARACTERISTICS Maxillary Second Molar–Buccal View ! The buccal roots are nearly _____, not very curved, " and have a _____ inclination ! The root trunk is longer than the _____ "_____ furcation more apical
parallel distal first molar buccal
42
UNIQUE CHARACTERISTICS Maxillary Second Molar–Mesial View ! The B-L crown dimension is _____ than the O-C crown dimension ! The outline form of the crown is _____ ! There is no _____ 
greater trapezoidal cusp of carabelli
43
UNIQUE CHARACTERISTICS Maxillary Second Molar–Mesial View ! The B height of contour is located in the _____ third of the crown ! The L height of contour is located in the _____ third of the crown
cervical | middle
44
UNIQUE CHARACTERISTICS Maxillary Second Molar–Mesial View ! The _____ dimension of the MB root is larger than the DB root " The _____ root is hidden by the _____ root ! The MB cusp is about _____ longer than the ML cusp
BL distobuccal mesiobuccal 1mm
45
UNIQUE CHARACTERISTICS Maxillary Second Molar–Mesial View | ! The palatal root does not _____ towards the palate as much as the _____
flare | first molar
46
UNIQUE CHARACTERISTICS Maxillary Second Molar – Occlusal View ! The buccolingual crown dimension is _____ than the mesiodistal crown dimension *** ! The crown is wider buccolingually in the _____ half of the crown
greater | mesial
47
UNIQUE CHARACTERISTICS Maxillary Second Molar – Occlusal View ! The outline of the occlusal surface resembles a _____
rhomboid
48
UNIQUE CHARACTERISTICS Maxillary Second Molar – Occlusal View ! The M contact area is located _____ to the center of the crown ! the D contact area is located at the _____ of the crown
buccal | center
49
UNIQUE CHARACTERISTICS Maxillary Second Molar – Occlusal View ! The cusp size (from largest to smallest: " _____ " _____ " _____ " _____
ML MB DB DL
50
UNIQUE CHARACTERISTICS Maxillary Second Molar – Occlusal View ! There is considerable _____ in the size of the DL cusp " *About _____ of the time the DL cusp is missing
variation | 1/3
51
``` UNIQUE CHARACTERISTICS Maxillary Second Molar – Occlusal View Present: " _____ " _____ " _____ ```
stuart groove oblique ridge trigone
52
UNIQUE CHARACTERISTICS Maxillary Second Molar – Occlusal View ! The same _____ major grooves on the maxillary 1st molar are present: " _____ " Facial/Buccal " _____ or _____ " _____ " Transverse groove of the oblique ridge
central DL, DO lingual
53
UNIQUE CHARACTERISTICS Maxillary Second Molar–Distal View ! The _____ and _____ cusp tips are visible beyond the outline of the _____ and _____ cusps " The M cusps are _____
MB, ML DB, DL higher
54
UNIQUE CHARACTERISTICS Maxillary Second Molar–Distal View Like the Maxillary first molar: ! The D marginal ridge is located more _____ ! The D furcation separates the _____ and _____ cusps " Located closer to the _____ than the other furcations " Root trunk _____ from this view
``` cervical DB P root tips longer ```
55
UNIQUE CHARACTERISTICS Maxillary Second Molar– Lingual View ! The crown shows a _____ taper " _____ slightly larger than _____ M-D ! The roots curve _____
lingual B half L half distally
56
Maxillary Third Molar | Eruption: _____
17-21 years
57
Mandibular First Molar | Eruption: _____
6-7 years
58
UNIQUE CHARACTERISTICS Mandibular First Molar–Buccal View ! The M-D crown dimension is _____ than the O-C crown dimension ! The outline form is a _____
greater | trapezoid
59
UNIQUE CHARACTERISTICS Mandibular First Molar–Buccal View _____ cusps: ! The _____ cusp is the largest, widest, and highest of the 3 buccal cusps ! The _____ cusp is smaller and sharper than the other buccal cusps
3 MB D
60
UNIQUE CHARACTERISTICS Mandibular First Molar–Buccal View ! The two lingual cusps (ML and DL) are visible because they are _____ than the buccal cusps ! The buccal cusps are more _____ compared to the lingual cusps " Why? 
longer | flat
61
``` UNIQUE CHARACTERISTICS Mandibular First Molar–Buccal View ! The MB groove " _____ than the DB groove " may have a deep pit at its _____ end " **area of _____ lesions also** ```
longer cervical Class I
62
UNIQUE CHARACTERISTICS Mandibular First Molar–Buccal View ! The M contact area is located at the junction of the _____ and _____ thirds ! The D contact area is located at the junction of the _____ and _____ third " _____ to the mesial contact
``` occlusal middle occlusal middle cervical ```
63
UNIQUE CHARACTERISTICS Mandibular First Molar–Buccal View ! There are _____ roots that are nearly the same length " Mesial - _____ pulpal chambers " Distal – _____ chamber ! The _____ root is longer than the _____ root ! The _____ root is straighter than the _____ root
``` 2 2 1 M D D M ```
64
UNIQUE CHARACTERISTICS Mandibular First Molar–Mesial View ! The buccal height of contour is located in the _____ third of the crown ! The lingual height of contour is located in the _____ third of the crown
cervical | middle
65
UNIQUE CHARACTERISTICS Mandibular First Molar–Mesial View ! The B-L crown dimension is _____ than the O-C crown dimension ! The shape from the proximal view is a _____
greater | rhomboid
66
UNIQUE CHARACTERISTICS First Mandibular First Molar–Mesial View ! The _____ root is wider B-L than the _____ root " Contains the _____ pulpal canal " Contains the _____ pulpal canal ! The large dimension of the mesial root prevents the _____ root from being visible when viewed from the _____
``` M D MB ML distal M ```
67
UNIQUE CHARACTERISTICS Mandibular First Molar – Occlusal View ! The M-D crown dimension is _____ than the B-L crown dimension " **unlike _____ ! The greatest B-L dimension is at the _____ cusp area
greater maxillary molars DB/DL
68
UNIQUE CHARACTERISTICS Mandibular First Molar – Occlusal View ! The outline form is described as: " a _____ " a _____
pentagon | hexagon
69
UNIQUE CHARACTERISTICS Mandibular First Molar – Occlusal View ! The crown tapers _____ " smaller M-D dimension on the _____ surface
lingually | lingual
70
UNIQUE CHARACTERISTICS Mandibular First Molar – Occlusal View ! The M contact area is located _____l to the center of the crown ! The D contact area is located _____ to the center of the crown " _____ to the M contact
buccal buccal lingual
71
UNIQUE CHARACTERISTICS Mandibular First Molar – Occlusal View ! The cusp size (from largest to smallest) : " _____ " _____ = _____ " _____ " _____
``` MB ML DL DB D ```
72
``` UNIQUE CHARACTERISTICS Mandibular First Molar – Occlusal View ! There are three fossae: " _____ " _____ " _____ ```
central mesial distal
73
UNIQUE CHARACTERISTICS Mandibular First Molar – Occlusal View ! There are _____ major grooves present: " _____ " _____ " _____ " _____ ! The central groove has a _____ M-D form
``` 4 central MB DB L zigzag ```
74
UNIQUE CHARACTERISTICS Mandibular First Molar – Occlusal View ! The triangular ridges of the MD and ML cusps and DB and DL cusps meet to form _____ transverse ridges** ! D cusp has _____ triangular ridge
2 | lone
75
UNIQUE CHARACTERISTICS Mandibular First Molar–Distal View | ! The D marginal ridge is located more _____ than the M marginal ridge
cervical
76
UNIQUE CHARACTERISTICS Mandibular First Molar–Distal View | ! The _____ root is rounder in cross-sectional form than the _____ root
distal | mesial
77
UNIQUE CHARACTERISTICS Mandibular First Molar– Lingual View | ! The greater height of the _____ cusps hide the _____ cusps from view
lingual | buccal
78
UNIQUE CHARACTERISTICS Mandibular First Molar– Lingual View | ! The mesiodistal dimension of the mesiolingual cusp is often slightly greater than the _____ cusp
distolingual
79
Mandibular Second Molar | Eruption: _____
11-13 years
80
UNIQUE CHARACTERISTICS Mandibular Second Molar– Buccal View ! The M-D crown dimension is _____ than the O-C crown dimension ! The outline form of the crown is a _____
greater | trapezoid
81
UNIQUE CHARACTERISTICS Mandibular Second Molar– Buccal View _____ Buccal cusps: ! The _____ cusp is the larger, wider, and higher B cusp ! There is one buccal _____ separating the cusps. " The buccal groove may end in the _____ of the crown with a _____
2 MB developmental groove middle
82
UNIQUE CHARACTERISTICS Mandibular Second Molar– Buccal View ! The M contact area is located at the junction of the _____ and _____ thirds ! The D contact is located in the _____ third " _____ occlusogingivally " _____ to the mesial contact
``` occlusal middle middle centered cervical ```
83
``` UNIQUE CHARACTERISTICS Mandibular Second Molar– Buccal View ! There are two roots that are _____ " Mesial - _____ pulpal chambers " Distal – _____ chamber ! The M root slightly _____ than the D root ! The root tips are relatively _____ to each other ```
``` almost the same length 2 1 longer parallel ```
84
UNIQUE CHARACTERISTICS Mandibular Second Molar– Mesial View ! The B-L crown dimension is _____ than the O-C crown dimension ! The shape from the proximal views is a _____
greater | rhomboid
85
UNIQUE CHARACTERISTICS Mandibular Second Molar– Mesial View ! The B height of contour is located in the _____ third of the crown ! The L height of contour is located in the _____ third of the crown
cervical | middle
86
``` UNIQUE CHARACTERISTICS Mandibular Second Molar– Mesial View ! The _____ root is wider B-L " Contains the _____ pulpal canal " Contains the _____ pulpal canal ```
mesial MB ML
87
UNIQUE CHARACTERISTICS Mandibular Second Molar – Occlusal View ! The M-D crown dimension is _____ than the buccolingual crown dimension ** ! The greatest B-L dimension is in the _____ cusp area
greater | MB/ML
88
UNIQUE CHARACTERISTICS Mandibular Second Molar – Occlusal View ! The outline form is _____
square
89
UNIQUE CHARACTERISTICS Mandibular Second Molar – Occlusal View ! The M contact area is located _____ to the center of the crown ! the D contact area is located at the _____ of the crown " _____ to the M contact
buccal center lingual
90
UNIQUE CHARACTERISTICS Mandibular Second Molar – Occlusal View ! The cusp size (from largest to smallest): " _____ " _____ " _____ " _____
MB ML DB DL
91
``` UNIQUE CHARACTERISTICS Mandibular Second Molar – Occlusal View ! There are three fossae: " _____ " _____ " _____ ```
central mesial distal
92
UNIQUE CHARACTERISTICS Mandibular Second Molar – Occlusal View ! There are 3 major grooves present: " _____ " _____ " _____ ! The central groove forms a _____ with the buccal and lingual grooves
central buccal lingual + pattern
93
UNIQUE CHARACTERISTICS Mandibular Second Molar – Occlusal View ! The triangular ridges of the MB and ML cusps and DB and DL cusps meet to form _____
2 transverse ridges
94
UNIQUE CHARACTERISTICS Mandibular Second Molar– Distal View ! The distal marginal ridge is located more _____ than the mesial marginal ridge
cervical
95
UNIQUE CHARACTERISTICS Mandibular Second Molar– Distal View ! The cross-sectional form is similar to the _____
mandibular first molar
96
UNIQUE CHARACTERISTICS Mandibular Second Molar– Lingual View ! The _____ cusp is less high than the _____ cusp ! The M-D dimension of the _____ cusp is slightly greater than the _____ cusp
DL ML MB ML
97
Mandibular Third Molar | Eruption: _____
17-21 years

Dental Development and Anatomy (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions