max molars Flashcards
1
Q
Largest crown in mouth
A
Maxillary First Molar
2
Q
anchor tooth of maxillary dentition
A
Maxillary First Molar
3
Q
Maxillary First Molar
A
presents basic pattern for permanent maxillary molars
4
Q
type 5 and 6 vertucci
A
5
Q
vertucci 7 and 8
A
6
Q
(59.87%) were Vertucci type 4
A
max 1st molar
7
Q
—– have some of the highest failure rates in endodontic treatment due to the presence of a second canal in the mesiobuccal root that the clinician fails to detect, debride and obturate.
A
maxillary molars have some of the highest failure rates in endodontic treatment due to the presence of a second canal in the mesiobuccal root that the clinician fails to detect, debride and obturate.
8
Q
Carabelli Cusp usually absent
A
in Max second molar
9
Q
max second molar –> different from 1st molar
A
size is smaller with the three roots closer together
10
Q
Trapezoidal crown outline form
A
Maxillary First Molar(buccal)
11
Q
Crown slightly shorter occlusocervically than teeth anterior to it
A
max 1st molar
(buccal)
12
Q
tf
Maxillary First Molar have Two buccal cusps separated by buccal groove
A
t
13
Q
buccal groove of max 1st molar
A
extends halfway up the buccal side
14
Q
deepest part of depression on buccal surface of
Maxillary First Molar
A
ocasonal pit
15
Q
which cusp is larger on buccal side of Maxillary First Molar
MB or DB
A
MB cusp
16
Q
sharper and longer cusp on buccal side of
Maxillary First Molar
MB or DB
A
DB
17
Q
MB cusp slopes more or less inclined than DB
(Buccal (Facial) Aspect: of max 1st molar)
A
less
forms an obtuse angle
18
Q
forms 90 degrees
A
DB cusps on max 1st pre molar
19
Q
Facial (buccal) cervical ridge
A
passes mesiodistally across cervical third of crown
(buccal aspect of max 1st molar)
20
Q
is convex and flatter
mesial vs distal profile of max 1st molar
A
mesial profile of max 1st molar
21
Q
Distal crown profile convex with concavity in cervical third continuing on root
A
max 1st molar
22
Q
tf Buccal CEJ of max 1st molar
more convex than teeth anterior to it
A
f
Buccal CEJ much flatter than teeth anterior to it
23
Q
CEJ of Maxillary First Molar
A
may dip toward area of buccal furcation
24
Q
Maxillary First Molar(buccal view)
—- roots visible from common root trunk;
A
Maxillary First Molar
25
tf on max 1st molar
root system wider mesiodistally than Crown
Crown wider mesiodistally than root system
26
Root trunk in occlusal third of root (approx. 4mm)
max 1st molar
27
Facial developmental groove and furcation in line
max 1st molar
28
Maxillary First Molar
MB and DB roots may have ----- inclination
MB and DB roots may have distal inclination
29
MB and DB roots
converge at apical third
30
----- root seen between two buccal roots of max 1st molar
lingual (palatal)
31
MB root inclination
max 1st molar
90 degree
32
DB root inclinations
obtuse
in max 1st molar
33
tf
MB and DB roots of max 1st molar are wider mesiodistally than buccolingually
f
MB and DB roots are wider buccolingually than mesiodistally;
34
tf
L(P) root of max 1st molar wider mesiodistally than buccolingually
t
35
which direction does crown diverge on lingual surface of
max 1st molar
to lingual
36
tf in lingual surface which cusp is the largest
ML of max 1st molar
37
extends 3/5 of entire width mesiodistally)
ML cusp of max first molar
38
Cusp of Carabelli (fifth cusp) arises from the ------ surface of the ML cusp on max 1st molar
Cusp of Carabelli (fifth cusp) arises from the lingual surface of the ML cusp
39
small and rounded
DL cusp of max 1st molar
40
distolingual groove of max 1st molar
separate Two lingual cusps
41
terminate in a lingual pit in the central portion of the lingual surface in max 1st molar
distolingual groove
42
Lingual CEJ of max 1st molar
straight to slightly convex
43
lingual root is broader mesiodistally than buccolingually
max 1st molar
44
Dominant (largest) lingual root has shallow depression along cervical 2/3 of root and across CEJ
max 1st molar
45
tf from lingual view of max 1st molar
mesial outline of MB and DB root seen
f
Entire mesial outline of MB root seen but only partial view of DB root
46
mesial aspect of max 1st molar;
----- ------ ridge connects MB and ML cusps;
Mesial marginal ridge connects MB and ML cusps;
47
max 1st molar
Crown has trapezoidal outline form
from mesial side
48
Buccal profile of max 1st molar may appear slightly -----
in middle third (occlusal to cervical ridge)
Buccal profile may appear slightly concave in middle third (occlusal to cervical ridge)
49
Lingual profile uniformly convex with maximum convexity in middle third from mesial view
max 1st molar
50
max 1st molar mesial
CEJ shallow (minimum curvature) and irregularly curved toward the occlusal
51
Root trunk of max 1st molar broad
faciolingually
52
Faciolingual root spread is ---- than faciolingual diameter of crown
max 1st molar mesial view
Faciolingual root spread is broader than faciolingual diameter of crown
53
MB root broad ----- and projects straight beyond crown surface slightly toward the ----
max 1st molar mesial
MB root broad buccolingually and projects straight beyond crown surface slightly toward the buccal
54
tf on max 1st molar from mesial view
Developmental depression present across 1/3 of MB root
f
Developmental depression present across 2/3 of MB root
55
longest and shaped like a banana
lingual root of max 1st molar
56
lingual root of max 1st molar
first extends lingually beyond crown outline,
then curves in toward the buccal
57
which furcation is visible of max 1st molar
ML furcation
58
max 1st molar mesial view
--- cusp more centered over root trunk than -- cusp
ML cusp more centered over root trunk than MF cusp
59
Crown is wider and taller on the mesial from mesial view
max 1st molar
60
tf from mesial view of max 1st molar only 2 cusps are visible
F
1. MB (MF) cusp 2. ML cusp 3. Fifth (Carabelli) cusp
61
mesial view of max 1st molar
roots present
1. Lingual (Palatal) root 2. 2. MB (MF) root
62
tf Distal marginal ridge longer than mesial marginal ridge buccolingually
max 1st molar
Distal marginal ridge shorter than mesial marginal ridge buccolingually
63
tf more occlusal surface visible from distal view than mesial view of max 1sst molar
T
64
max 1st molar
Buccal surface more visible due to rhomboidal crown form (and D taper)
65
Proximal contact near crown center
distal aspect of max 1st molar
66
which cusp is center more over root of max 1st molar
DL or DF
• DL cusp more centered over the root than DF cusp
67
tf DB root of max 1st molar is smaller than MB root
t
68
total number of roots visible from distal side of max 1st molar
3
69
DL furcation visible -mm from CEJ
max 1st molar
DL furcation visible 5mm from CEJ
70
Distinct -- concavity in cervical third of crown and root of max 1st molar
Distinct DF concavity in cervical third of crown and root
71
occlusal of max 1st molar
Rhomboid outline form;
72
line angle acute of max 1st molar
MB and DL
73
line nagle obtuse of max 1st molar
| (occlusal view)
ML and DB line angles
74
Wider buccolingually than mesiodistally
max 1st molar
occlusal
75
which side is wider buccolingually
mesia or distal half of max 1st molar
(mesial half of tooth wider buccolingually than distal half
76
on max 1st molar
which is wider buccolingually and more prominent
Mesial marginal ridge or distal marginal ridge ?
• Mesial marginal ridge wider than distal marginal ridge buccolingually and more prominent
77
oblique ridge of max 1st molar
at same level occlusocervically as MMR & DMR)
78
smallest cusp of max 1st molar and not part of occlusal surface
Carabelli
79
arrange the following of max 1st molar
ML DL DB MB Carabelli
ML\>MB\>DL\>DB\>Carabelli
80
more centered on tooth than any other cusp
and has two triangular ridges
of max 1st molar
ML cusp
81
talon of max 1st molr
DL cusp
82
Trigon of max 1st molar
MB ML DB cusp
83
Primary cusp triangle centered over root trunk
max 1st molar
84
Oblique ridge (type of transverse ridge) of max 1st molar
extends from ML cusp to DB cusp
85
how many total fossa are on occlusal of max 1st molar
4
86
(central and distal
major 2 fossa of max 1st molar
87
mesial triangular fossa and distal triangular fossa
2 minor fossa of max 1st molar
88
lingual aspect of max 1st molar
grooves
1. Lingual developmental groove
2. Developmental groove of the fifth cusp
89
1. Central developmental groove
2. Facial (buccal) developmental groove
3. Transverse groove of the oblique ridge
4. Distal oblique developmental groove
max 1st molar
90
root of max 1st molar
Root trunk trifurcated forming 3 root branches: 2 buccal and 1 lingual
91
largest and longest root of max 1st molar
lingual root
92
inclines lingually;
lingual root of max 1st molar
93
wider mesiodistally than buccolingually
lingual root of max 1st molar
94
shallow depression on lingual surface of root
of max 1st molar
95
cervical 2/3
max 1st molar lingual root
96
wider buccolingually than mesiodistally
MB root of max 1st molar
97
second largest and longest root of maxillary 1st molar
MB root
98
two pulp canals: one buccal, one lingual
max 1st molar
99
smallest and shortest
DB root of max 1st molar
100
slightly wider buccolingually than mesiodistally;
max 1st molar ; DB root
101
inclines distally and buccally
max 1st molar ; DB root
102
cervical cross section max 1st molar
Wider faciolingually than mesiodistally
and has buccal and lingual depressions
103
tf max 2nd molar is smaller and has three roots closer together than max 1st molar
T
104
Carabelli Cusp usually absent
max 2nd molar
105
max M2 buccal view
Crown shorter and narrower mesiodistally than M1
106
tf max M2 only has 1 buccal cusp visible from the buccal aspect
F
Two buccal cusps visible (MB & DB)
107
wich cusp of max M2 is sharper and more prominent than Max M1
MB cusp
108
tf max M2 has a Facial cervical ridge more pronounced than M1
Facial cervical ridge less pronounced than M1
109
tf all Three roots visible of Max M2 from buccal side
T
110
three roots of max 2nd molar
MB, L, DB
111
max 2nd molar (mesial view)
MB root curves distally with apex over furcation area
112
max M2 buccal
Buccal furcation slightly distal to the facial developmental groove
113
M2 vs M1 root
Roots shorter, closer to each other, and inclined more distally than M1
114
tf all the roots of max M2 are parrallel to each other
t
115
from lingual aspect of max M2
all rooots and cusps visible
116
the cusps of Max M2
DL ML
MB DB
117
which cusp is smaller on the max M2
DL or ML
DL
118
tf max M2 has o fifth (Carabelli) cusp
F
No fifth (Carabelli) cusp usually
119
Palatal (lingual) root of Max M2(lingual aspect)
root smoothly convex
120
Apex of palatal root
Max M2(lingual)
over DL cusp
121
DL groove of Max M2
terminates at a point further distal and occlusal than Max M1
(ends more midlingually)
122
mesial aspect of max M2
Two cusps and two roots visible
123
L (P) root and MB root
max M2 mesial
124
cusps visible from mesial side of Max M2
ML cusp , MB cusp
125
Facial cervical ridge of Max M2 (mesial view)
less prominent than M1
126
missing and not as pronounced
Cervical concavity or flattening on mesial aspect of max M2
127
centered mesial contact
max 2nd molar(mesial aspect)
128
tf Max M2 has a convex CEJ
F
flat
129
Less pronounced mesial marginal ridge
that is perpendicular to marginal ridge
max 2nd molar
130
MB and L roots of max M2
less divergent
131
MB and L roots of max M2
located well within the crown outline
132
tf from distal aspect of Max M2
all the cusps and roots are visible
T
133
tf Faciolingual root dimension of max M2 smaller than M1
T
134
which cusps of max M2 are shorter
DB and DL
135
tf from distal view of max M2 there is no occlusal surfce visible
F
more of occlusal surface is visible because of
Smaller DB and DL cusps
136
distal contact of max M2
is more centered
137
Crown of max M2 tapers toward distal
thus more B and L surface visible
138
Lingual cusps of max M2 (distal view) over
lingual root
139
tf max m2 (distal view ) have a longer root trunk
F
shorter
140
tf M1 and M2 maxilary both have db concavity
F
max M2 has no Db concavity
141
tf
MB and DL line angles of Max M2 are less acute than in
Max M1
F
more acute
142
rhomboid
outine form of max M2
143
tapers toward lingual and more constricted
Max M1 or Max M2
Max M2 (occlusaL)
144
largest cusp of MaxM2
ML cusp
145
DL cusp
small in Max M2
146
tf Max M1 and M2
have same groove pattern and fossa configuration
T
147
tf Max M1 and M2 have different ridge configuration
F they are the same
148
max 2nd molar
Buccal roots inclined distally and closer together
149
tf buccal roots of Max M2 are shaped like pliers
F
more parralel to each other
150
which has smaller lingual root
Max M1 or M2
Max M2
151
lingual root incline distally
MaxM2
152
tf max m2 have multiple pulp canal per root
F
1;1
153
One pulp ----- per cusp in max m2
One pulp horn per cusp
154
facial aspex of Max M3
very variable
155
tf max M3 is large than M2 and smaller thanM1
F
smaller than both
156
More rounded crown form
Maxillary Third Molar
157
------ area of Max M3 more narrow
Cervical area more narrow
158
Roots of Max M3
fused and more curved toward distal
159
Max M3
one large lingual cusp
| (can have DL cusp but mostly absent)
160
tf in Max M3 only Crown converge dramatically toward lingual
f
Crown and root system converge dramatically toward lingua
161
Root system of Max M3 compact and curves toward ----
Root system compact and curves toward distal
(lingual view)
162
mesial outline of max m3
resembles general outline of maxillary molars
163
from mesial view of max M3 which cusp are visible
MB and L cusps
164
Max M3 mesial view ;
CEJ ----- in form
CEJ irregular in form
165
max thrid molar (mesial view)
Fused root system with furcation in apical third of root
166
which view of Max M3 are more anatomic features visible
Distal
167
tf on max M3 Crown height shorter on distal view
T
168
More occlusal surface visible
from distal view of Max M3
169
variable
occlusal aspect of max M3
170
tf occlusal view of Max M3 is trapezoid shape
F
heart shape
171
longest cusp of max M3
lingual cusp
172
tf on occlusal view of Max M3
crown tapers only to distal view
F
Crown tapers dramatically toward distal and lingual
173
tf occlusal groove pattern of Max M3 has secondary groove pattern
T
174
Primary triangle
occlusal view of Max M3
175
irregular outline form and multiple depressions
cervical cross sectional of Max M3
176
tf we have larger jaws than ancestors
and we have plety of room to house 32 teeth
F
ur wisdom teeth often become impacted, or blocked from erupting.’
