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Final Flashcards

1
Q

** the number of point angles on posterior teeth is

A

four

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2
Q

*** the correct name for the anatomic feature labeled on the attached drawing is (its a max 1st PM)

A

the distal marginal ridge

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3
Q

** the ridge that comprises the lingual segment of the transverse ridge of the max first PM is correctly named

A

the lingual triangular cusp ridge

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4
Q

**the ridge that separates the 2 lingual fossae on a max canine is correctly named

A

the lingual ridge

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5
Q

**the mesial cusp ridge of the mandibular canine is shorter than the distal cusp ridge of the same tooth

A

TRUE

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6
Q

**the facial cervical line of all mandibular incisors is positioned

A

incisal to the lingual cervical line

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7
Q

**which of the following features would you expect to find on a max second PM

A

a transverse ridge
a mesial triangular fossa
a central groove
2 distal cusp ridges

(a,b,c,e)

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8
Q

**identify the mesial view of the max canine in the image attached

A

it is choice A

look at CEJ and that it is thick tooth. well developed fossa. but has shorter crown than the mand canine (weird***)

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9
Q

** in comparing lingual surfaces of permanent maxillary incisors, the permanent max lateral incisor would characteristically have more

A

a more pronounced lingual fossa
more prominent marginal ridges
more convex mesial and distal proximal surfaces

(a,b,d)

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10
Q

**with the exception of 3rd molars, when is the adult dentition typically complete?

A

14-15 years

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11
Q

**a tooth that frequently displays a mesially curved apex is the

A

mandibular canine

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12
Q

**identify the feature indicated by the arrow in the attached image

(its the perio ligament pic)

A

more than one option is correct (E)

it is interradicular fibers and periodontal ligament fibers

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13
Q

** which of the following teeth is most likely to have a bifurcated root?

A

mandibular canine

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14
Q

**the mandibular permanent lateral incisor usually erupts between the ages of

A

7 and 8 years old

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15
Q

** the mesial marginal ridge of most posterior teeth is located more occlusally than is the distal marginal ridge. which tooth is most likely to be the exception

A

mandibular 1st PM

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16
Q

** when viewed labially, contact area of anterior teeth are incisal to the middle third of the tooth. an EXCEPTION to this rule is the

A

distal contact of the max canine

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17
Q

**in distinguishing between a max and mand canine, which of the following features would be of aid?

A

ALL OF THEM

-the mesial contact areas of mandibular canines are located more incisally
-the cingulum of mandibular canines is less pronounced.
-mandibular canines appear longer and slimmer.

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18
Q

**a common trait common with ALL mand incisors is that they are wider _____ than _____

A

wider -> labiolingually
than -> mesiodistally

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19
Q

**deciduous PM number

A

ZERO

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20
Q

** facial aspect of all teeth resembles which geometric form?

A

trapezoid with the longer uneven side toward the occlusal or incisal surface

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21
Q

**the primary cusp triangle on the occlusal surface of max molars is formed by the

A

mesiolingual cusp
mesiobuccal cusp
distobuccal cusp

(b,d,e)

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22
Q

**tooth occasionally exhibits a lingual groove which extends from the enamel onto the cemental area of the root. This is most likely the permanent:

A

max lateral incisor

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23
Q

**The largest and best developed cusp of the mandibular primary first molar is:

A

the mesiolingual cusp

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24
Q

**T/F: the mesial of tooth 8 contacts the mesial of tooth 9

A

TRUE

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25
**the dental formula for the permanent human dentition is which of the following:
I2/2 C1/1 P2/2 M3/3 =16
26
anterior teeth: line angles: point angles:
line angles: 6 point angles: 4
27
posterior teeth: line angles: point angles:
line angles: 8 point angles: 4
28
mandibular 1st premolars resemble which tooth
canine and 2nd PM
29
mandibular 1st PM buccal aspect: mesial cusp ridge is ____ than the distal cusp ridge
SHORTER
30
mandibular 1st PM buccal aspect: contant areas are
board and near the same level mesially and distally just more than halfway from CEJ to the cusp tip (within middle third)
31
mandibular 1st PM buccal aspect: which shape is crown
trapezoid CEJ is relatively straight
32
mandibular 1st PM buccal aspect: cusp tip is pointed and slightly __________
mesial to a center line
33
mandibular 1st PM lingual aspect: crown significance
Crown tapers toward the lingual and a significant portion of the mesial and distal surfaces are visible from this aspect
34
mandibular 1st PM lingual aspect: lingual cusp significance
Lingual cusp is always small, little more than a cingulum, and the occlusal surface is sloped toward the lingual down to the lingual cusp
35
mandibular 1st PM lingual aspect: T/F: cannot see most of occlusal surface from this view
FALSE!!! CAN SEE MOST OF THE TABLE
36
mandibular 1st PM lingual aspect: which lobe makes up most of crown
the middle buccal lobe -> gives it appearance like mandibular canine
37
mandibular 1st PM lingual aspect: KEY FEATURES
mesiolingual developmental groove, which lies between the mesiobuccal lobe and the lingual lobe and extends onto the occlusal surface separates MMR from the mesial slope of the lingual cusp
38
mandibular 1st PM lingual aspect: root significance
significantly narrower on the lingual side can have mesial curve but usually distal
39
mandibular 1st PM mesial aspect: crown looks like what shape
rhombodial
40
what is a characteristic all ALL mand post teeth shape wise
crown is rhomboidal shape from mesial view
41
mandibular 1st PM mesial aspect: cusp tips significance
Tip of the buccal cusp is nearly centered over the root Lingual cusp tip is in line with the lingual border of the root and the lingual outline of the crown is lingual to the outline of the root presenting an overhang of the crown above the root trunk **Differs from all maxillary posterior teeth where the cusp tips are well within the confines of the root trunk
42
characteristic of mandibular posterior teeth crest of curvature wise
The crest of curvature is in the cervical 3rd near the junction of the cervical and middle 3rds
43
on mand 1st PM mesial view, what is a key thing you are able to see
the mesiolingual developmental groove on the crown
44
which tooth has snake eyes
mand 1st PM
45
mand 1st PM occlusal aspect: shape
commonly a diamond shape
46
mand 1st PM occlusal aspect: key features
-Middle buccal lobe makes up major bulk of the crown -The buccal ridge is prominent -Mesiobuccal and distobuccal ridges are prominent -Curvatures representing the M&D contact areas are broad, with the distal broader of the two -The crown converges sharply to the lingual -The marginal ridges are prominent -The lingual cusp is small -The buccal triangular ridge is large and dominant on the occlusal view with the lingual triangular ridge small
47
mand 1st PM occlusal aspect: KEY THING TO LOOK FOR IS
the snakeyes! --> mesial developmental groove distal developmental pit/ may also have groove
48
mand 1st PM: what is an exception with this tooth
mesial marginal ridge is more cervical (different from other teeth)
49
is the first mand PM bigger or the 2nd?
mand 2nd PM is larger
50
mand 2 PM cusp significance
can have 2 or 3! 2: F and L 3: F, ML, DL **more common
51
does the mand 2 PM have shorter or longer buccal cusp than the mand 1 PM
SHORTER buccal cusp
52
contact areas for mand 2nd PM
middle 3rd
53
HOC for mand premolars buccal aspect
all at the junction of the occlusal and middle thirds
54
does 2nd or 1st mand PM have more pointed cusp tip with longer cusp ridge
1st premolar has more pointed cusp tip with longer cusp ridges 2nd has more flat cusp ridges than 1st
55
mand 2 PM lingual aspect: on the 3 cusp variety, we can see a
small lingual groove not on the 2 cusp variety
56
what is the only tooth with the MMR more cervically located than the DMR
the mand 1st PM
57
what teeth show a lingual tilt
mand post teeth **1 PM tilts more than 2 PM
58
HOC F and L for mand 1 PM
F: cervical third L: middle third
59
HOC F and L for mand 2 PM
F: middle third L: middle third
60
mand 2 PM 3 cusp variety -> rank cusp sizes largest to smallest
buccal > ML > DL
61
mand 2 PM 3 cusp variety each cusp has well formed
triangular ridges forms a Y shape
62
mand 2 PM 2 cusp variety what are the two letters the occlusal surface can make
U or H ***3 cusp -> Y shape
63
what is the largest and strongest mand teeth
mand molars
64
crown shape of mand molars
quadrilateral (MD>FL)
65
mand 1st molar -> how many cusps and rank largest to smallest
5 ML > MB > DL > DB > D
66
mand 1 molar roots:
2 M: curves distal. 2 canals D: straight or distally curved. one canal
67
HOC M/D for mand 1 molar
M: junction of occlusal and middle third D: middle third
68
crown shape buccal of mand 1 molar
trapezoidal shape
69
HOC B/L for mand 1 molar
B: cervical third L: middle third
70
crown shape mesial of mand 1 molar
rhomboid shape lingual tilt of crown bc its a mand post tooth!
71
T/F: the rule is D cusp ridge is lower than M from D/M view
true
72
which tooth has a distal taper
mand 1st molar AND 2nd molar wider M then gets LESS wide D
73
mand 1 molar: which developmental grooves can be seen from buccal aspect
MB and DB developmental grooves
74
T/F: from the M view on a mand 1 M, you can see ALL 5 cusps and 2 roots
FALSE! the DISTAL view you can
75
largest cusp on a mand 1 molar
ML 3 buccal cusps are pretty flat 2 lingual are sharper
76
which tooth has a cruciform shape on the O surface
mand 2 molars
77
how many cusps on a mand 2 molar and rank largest to smallest
4 cusps ML>DL>MB>DB
78
mand 2 molar roots significance
they arent as spread out as the 1st. we are running out of room back there so theyre closer together
79
HOC of mand 2 molar M/D
M: junction of occlusal and middle third D: middle third
80
T/F: lingual groove is less prominent on the 2 mand molar than on 1 mand molar
TRUE
81
HOC of mand 2 molar B/L
B: cervical third L: middle third
82
how many cusps can you see from M view on a mand 2nd molar
3! ML, MB, DB
83
which side (D/M) on a mand 2 molar can you see all 4 cusps and 2 roots
DISTAL! (same with the 1 mand molar!)
84
with teeth are responsible for these functions: -Mastication off food -Maintaining vertical dimension of the face -Prevent protruding chin and aged appearance -Maintaining the continuity of the arches -Proper alignment -Esthetics -Keep cheeks normally full
MOLARS
85
T/F: permanent molars are not succedaneous teeth – it has no predecessor in the arch
TRUE
86
which category of teeth are widest than tall
molars
87
which category of teeth have crown heights shorter than other teeth
molars
88
T/F: all buccal surfaces are wider MD than the lingual surface
FALSE EXCEPTION: some maxillary 1st molars have a wider lingual surface
89
contact areas for molars in general M/D
M: at or near the junction of the occlusal and middle thirds D: middle third
90
salient features of max 1st molars
oblique ridge MD wider greater on L cusp of Carabelli 3 roots
91
T/F palatal root is usually longer than buccal roots on max molars
true
92
rank cusp sizes of max 1 molar
ML > MB > DL > DB > cusp of c
93
what forms the max 1 molar primary cusp triangle
the tips of the 3 largest cusps ( ML, MB, DB cusp tips) **pic on slide 18 on perm max molars
94
what forms the transverse ridge on max 1 molar
triangular ridges meet in the central aspect forming a transverse ridge **The transverse ridge from the distobuccal cusp to the mesiolingual cusp crosses the tooth obliquely, and is called the oblique ridge.
95
what is a key difference b/w 1 and 2 max molars
2nd molar has NO cusp of C and SMALLER DL cusp overall smaller crown than 1 molar and roots are closer together on 2nd
96
what does the oblique ridge consist of on a max 1 molar
distal ridge of the ML cusp and the triangular ridge of the DF cusp
97
when does exfoliation take place in a kid
b/w 7th and 12 years
98
how many primary teeth and how many of each
20 total 2 I, 1 C, 2 M in EACH QUAD
99
what which age is primary dent complete
about 2.5 years
100
Do primary premolars exist
NO!!
101
the crowns of primary max 1 molars resemble what in the permanent
permanent PM
102
which primary tooth has a crown unlike any permanent tooth
crown of a primary mand 1st molar then he also says primary mand and max 1st molars differ from any teeth in the permanent set when the crowns are compared
103
letters from primary mand and max arches
max: A-J Mand: K-T
104
The crowns of primary anterior teeth are_____ mesiodistally in comparison with their crown length than are the permanent teeth.
WIDER
105
The roots of primary anterior teeth are narrower and ______ comparatively
longer
106
The roots of the primary molars accordingly are______ and more slender and flare more, extending out beyond projected outlines of the crowns. This flare allows more room between the roots for the development of permanent tooth crowns
longer
107
The cervical ridges of enamel of the anterior teeth are______ prominent in primary. These bulges must be considered seriously when they are involved in any operative procedure
more
108
The crowns and roots of primary molars at their cervical portions are _______________
more slender mesiodistally
109
The cervical ridges ______ on the primary molars are much more pronounced, especially on the maxillary and mandibular first molars
buccally
110
The buccal and lingual surfaces of primary molars are _____ above the cervical curvatures than those of permanent molars, which narrows the occlusal surfaces.
flatter **good bc little kids dont have great hygiene
111
The primary teeth are usually_____ pigmented and are ______ in appearance than the permanent teeth.
LESS WHITER
112
The enamel cap of primary molars is ______ and has a more consistent depth.
thinner
113
max 1st molar occlusal aspect --- a ket difference between max and mand is (primary)
Sometimes the primary maxillary first molar has a well-defined triangular ridge connecting the mesiolingual cusp with the distobuccal cusp. When well developed, it is called the oblique ridge.
114
The ___________does not resemble any other teeth, deciduous or permanent
Primary mandibular first molar ON EXAM FOR SURE
115
ugly duckling phase
6-12 years
116
T/F not all permanent teeth replace a primary
TRUE!
117
T/F all succedaneous teeth are permanent but not all permanent teeth are succedaneous
TRUE succedaneous teeth = permanent teeth that replace the primary teeth
118
line angles
formed by junction of 2 surfaces
119
point angles
formed by junction of 3 surfaces
120
cusp
an elevation or mound on the coronal portion of a tooth making up a divisional part of occlusal surface
121
tubercle
small elevation on the crown produced by excessive formation of enamel.
122
cingulum
L lobe of anterior teeth
123
marginal ridges
rounded borders of enamel that form the mesial and distal margins of the occlusal surface of posterior teeth and the lingual surface of anterior teeth
124
triangular ridges
descend from tips of cusps to central part of occlusal surface in premolars and molars
125
transverse ridges
formed by joining of buccal and lingual triangular ridges.
126
oblique ridge
Formed by joining of buccal and lingual triangular ridges crossing obliquely over the occlusal surfaces of maxillary molars from distal buccal to mesial lingual
127
fossa
irreg depression or concavity
128
triangular fossa
on occlusal surface just inside marginal ridges on molars and premolars. Sometimes found on lingual surface
129
sulcus/grooves
-Sulcus: long depression in surface of tooth between ridges and cusps, the inclines of which meet at an angle * Developmental Groove: Shallow groove or line between primary parts of the crown or root. * Supplemental groove: branch off of developmental grooves – do not mark a junction of primary parts

Dental Anatomy (5 decks)

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