Dental Morphology Flashcards
(335 cards)
1
Q
2nd tallest CROWN in mouth
A
Mx CI
2
Q
1st tallest CROWN in mouth
A
Mn Canine
3
Q
3rd tallest CROWN in mouth
A
Mx Canine
4
Q
All permanent incisors erupt with…
A
3 mamelons
5
Q
Canines or primary incisors do not erupt with…
A
mamelons
6
Q
I Just Jacked Michael Jackson’s Moped
A
Contacts from Mx CI to Canine
IJ - JM - JM
J = j(x) I & M
7
Q
Least likely to have a divided pulp canal
A
Mx CI Root
8
Q
Lends itself well to rotation w/ extraction forceps during surgical removal
A
Mx CI Root
9
Q
M & D pulp horns are more likely to be found in…
A
Mx CIs
10
Q
In X-section – root is triangular with base of triangle located faciallly, apex located lingually, MESIAL SIDE LONGER THAN DISTAL SIDE
A
Mx CI Root
11
Q
T/F, Mx CI has narrowest incisal/occlusal embrassure of ALL Mx teeth
A
TRUE
12
Q
T/F, Of all teeth - the GREATEST INCISAL CURVATURE of a cervical line [CEJ] is on the MESIAL SURFACE of Mx Centrals (more so than Mn Centrals)
A
TRUE
13
Q
Which anterior tooth has the LONGEST and WIDEST crown?
A
Mx CI
14
Q
Anatomical features include cingulum, mamelons, marginal ridges, cervical ridges, triangular ridges, and cuspal ridges
A
FALSE. Missing lingual ridges and lingual fossa and lingual ridge
Triangular ridges or cuspal ridges do not exist
15
Q
T/F, Incisal ridge of Mx CI crown is on line with the CENTER OF THE ROOT
A
TRUE
16
Q
T/F, Mx CI prominent cingulum located off-center towards the DISTAL
A
TRUE
17
Q
Which tooth has the greatest axial inclination relative to the occlusal plane?
A
Mx CI
18
Q
Which is least likely to have a divided pulp canal?
A
Mx CI
19
Q
Which tooth in mouth shows the least anatomy?
A
Mn CI (lingual is smooth and nearly lacking in any anatomy)
20
Q
Smallest permanent tooth
A
Mn CI
21
Q
Narrowest mesio-distally tooth
A
Mn CI
22
Q
Most symmetrical tooth
A
Mn CI
23
Q
Smallest facial embrasure in the mouth
A
Mn CI – may be the same size as the lingual embrasure, making it an EXCEPTION to the rule that lingual embrasures are always larger than facial
24
Q
Lingual embrasures are always larger than facial embrasures
A
Mostly TRUE for all teeth, untrue with Mn CI
25
First SUCCADANEOUS tooth (meaning it replaces primary teeth)
Mn CI
26
6 year molars are the 1st permanent teeth, BUT do not qualify as "succedaneous"
They do not replace primary teeth
27
The Mn CI is the only mandibular anterior which has both its mesial and distal contact points at the same level.
TRUE. Mandibular lateral as M/D contact points in the incisal third but the distal contact point is LOW in the incisal third
28
The incisal edge is lingual to the long axis of the tooth, so from an incisal view less of the lingual side is visible than the facial surface
Mn CI - weird way of saying = incisal ridge slightly lingual of the faciolingual bisector
29
Shortest rooth
Mn CI
30
40% have 2 canals or double PDL spaces
Mn CI
31
Most common lower anterior with multiple CANALS
Mn CI (40% have 2 canals/double PDL space)
32
Most likely anterior with multiple ROOTS/bifurcated
Mn Canine
33
Flat mesio-distally and a distal concavity
Mn CI root
34
The pulp appears narrower from the facial view than from the interproximal view.
Mn CI root
35
A cross-section at midroot of a permanent Mn CI is likely to show that the pulp cavity is flattened mesio-distally.
TRUE
36
When viewed from the incisal - mesial and distal outlines are asymmetrical
Mx Canine occlusal outline
37
Longest tooth
Mx Canine
38
Longest root
Mx Canine
39
Longest Crown
Mn Canine
40
2nd Longest Crown
Mx CI
41
3rd Longest Crown
Mx Canine
42
Tooth is wider faciolingually (FL) than mesiodistally (MD)
Mx Canine
43
Largest faciolingual dimension of all ANTERIOR teeth
Mx Canine
*Anterior = key word; posterior teeth can be bigger
44
Widest mesiodistally are
Mx CIs and CLs
45
Wider mesiodistal dimension of the crown on the facial than the lingual
Mx Canine
46
Occlusal outline is asymmetrial
Mx Canine
47
Mx Canine for crown size?
3rd place
48
No mamelons/4 lobes
Mx Canine
49
Does not have lingual fossa; has a lingual ridge which splits the lingual fossa into the mesial fossa and distal fossa
Mx Canine
50
No developmental depressions on the lingual
Mx Canine, developmental depressions are on the facial
51
The structure immediately mesial to the distolingual (DL) fossa is the lingual ridge
Mx Canine
52
The structure immediately distal to the mesiolingual (ML) fossa is the lingual ridge
Mx Canine
53
The mesial and distal fossae meet the proximal surfaces of the tooth that the mesial and distal marginal ridges
Mx Canine
54
The structure immediately mesial to the mesiolingual fossa is the mesial marginal ridge
Mx Canine
55
The facial cusp has a mesial cusp slope that is shorter than the distal cusp slope.
TRUE FOR ALL TEETH, EXCEPT.... PRIMARY Mx Canine and permanent Mx 1st PM
56
Cusp tip may be centered or slightly facial of the faciolingual long axis bisector
Mx Canine
57
From an incisal view, which surface is more visible on a Mx Canine?
Lingual more visible- because the cusp tip of Mx canines are slightly facial
58
Longest root
Mx Canine
59
Pulp cavity has its widest dimension faciolingually in the cervical third of the crown.
Mx Canine
60
Mx canine pulp cavity has its widest dimension faciolingually in the...
Cervical third of the crown
61
Canine eminance
Roots of the Mx canines dictate alveolar wall morphology, although they are under bone
62
Least likely tooth to have 2 roots among canines and PM
Mx canine
63
Pulp cavity in M/D section is pointed at its incisal limit
Mx Canine
64
Pulp cavity in M/D section of Mx Canine is _____ at its incisal limit
POINTED
65
Least likely to be extracted
Mx canine - due to long root
66
Has 3rd longest crown
Mx canine - behind the Mx CI and Mn Canine
67
Most prominent labial ridge
Canines
68
Longest root
Mx canine
69
Longest tooth inciso-apically
Mx canine
70
Widest anterior tooth bucco-lingually
Mx canine - all posterior teeth are wider buccolingually especially the Mx 1st Molar ( = widest in the mouth)
71
Mx canine B/L outline
Pentagonal
72
Mx canine M/D outline
Triangular
73
Mx canine incisal
Diamond + asymmetric
74
Mx canine M contact pt
J(x) (I & M)
75
Mx canine D contact pt
Middle
76
Lingual ridge
Mx canine
77
Mn CI M/D outline
Triangular
78
Mn CI B/L outline
Trapezoidal
79
Mn CI mesial contact pt
Incisal
80
Mn CI distal contact pt
Incisal
81
Mn LI distal contact pt
LOW inscisal
82
Mn CI root is _____ with a mesial and distal concavity.
flat mesiodistally
83
Mx CI M/D outline
Triangular
84
Mx CI B/L outline
Trapezoidal
85
Mx CI occlusal outline
Triangular
86
Mx CI mesial margine
Straight, nearly parallel to the rooth
87
Mx CI distal margin
Rounded (more convex) and shorter
88
Mx CI mesial contact pt
Incisal
89
Mx CI distal contact pt
J(x) (I & M)
90
Mn LI F/L outline
Trapezoidal
91
Mn LI M/D outline
Triangular
92
Mn LI incisal outline
Oval
93
Has incisal edge that appears twisted on its apex (as it goes from mesial to distal, it curves lingually)
Mn LIs
94
The incisal edge follows the arch curvature in relation to the faciolingual axis
Mn LIs
95
Can see the distal marginal ridge (DMR) from the mesial view
Mn LIs
96
Wear facets of the incisal edges of the Mn LIs are caused by occlusion with...
Mx CI and Mx LI
97
Lingual cervical line is positioned more apically than facial cervical line
Mn LIs
98
Mx LI has lingual cervical line positioned more ____ than facial cervical line
apically
99
Most likely incisor to have 2 canals and 2 roots
Mn LI
100
Mn 1st PM occlusal outline
Diamond
101
Smallest premolar
Mn 1st PM (smaller than Mn 2nd PM - EXCEPT in crown height)
102
Largest premolar
Mx 1st PM
103
Lingual cusp is small, resembles cingulum
Mn 1st PM
104
From an interproximal view, the facial cusp appears centered over the long axis; the non-f(x) lingual cusp tip is in line with the lingual surface of the root
Mn 1st PM
105
Mn 1st PM, mesial lingual developmental groove makes mesial marginal ridge (MMR) run at a
45 degree angle
106
MesioLINGUAL developmental groove
Mn (near tongue) 1st PM
107
Only posterior tooth that has a HIGER DISTAL marginal ridge than mesial marginal ridge
Mn 1st PM
108
More occlusal surfaces can be seen from the mesial than from the distal (Mesial marginal ridge sits lower to the 45 degree angle)
Mn 1st PM
109
SNAKE EYES
Mn 1st PM
110
Only PM that as a buccal cusp with triangular ridge, so uniquely prominent as to frequently separate its mesial pit from its distal pit
Mn 1st PM
111
Has buccal cusp w/ triangular ridge
Mn 1st PM
112
Groove originates in an occlusal pit and extends onto a proximal surface (mesial)
Mn 1st PM
113
No central groove, may have central pit
Mn 1st PM
114
Mesiolingual developmental groove
Mn 1st PM - mesial view
115
Broader facially than lingually
Mn 1st PM
116
Frequently seen with a slight concavity on the mesial and distal surface
Mn 1st PM
117
Not flattened faciolingually
Mn 1st PM
118
A bifurcation is the most common root anomaly on
Mn 1st PM
119
Most common root anomaly on Mn 1st PM
Bifurcation
120
Usually free of marked distal curvature
Mn 1st PM
121
During ENDO on #21, you suspect a 2nd canal, most likely on the buccal of lingual?
If a 2nd pulp canal is present, it is most likely found lingual to the 1st canal.
122
Only tooth with its MMR at a grossly different angle than its DMR
Mn 1st PM - 45 degree angle, LOWER, due to mesiolingual developmental groove
123
Smallest premolar
Mn 1st PM
124
Narrowest and smallest root of all the premolars
Mn 1st PM
125
Most prominent transverse ridge of all the premolars without central groove
Mn 1st PM
126
Only tooth with a mesio-lingual groove from the occlusal to the lingual
Mn 1st PM
127
Tilted lingually
Mn 1st PM
128
Gingival papilla is shortest between the Mn 1st and 2nd PM
TRUE
129
Mn 2nd PM B/L outline
Pentagon
130
Mn 2nd PM M/D outline
Rhomboid
131
Mn 2nd PM occlusal outline
Pentagon
132
Lingual HOC in occlusal third
Mn 2nd PM
133
Types of Mn 2nd PM
2 cusp VS. 3 cusp
134
2 cusp Mn 2nd PM occlusal
Crescent = groove pattern forms either H or U
135
Which PM is most likely to exhibit a crescent shaped central developmental groove?
Mn 2nd PM
136
More common type of Mn 2nd PM
3 cusp type
137
3 cusp Mn 2nd PM # pulp horns
3
138
3 cusp Mn 2nd PM occlusal table
Square, groove form a "Y" -- bottom of Y makes lingual groove
139
Occlusal outline VS. Occlusal table for Mn 2nd PM
Occlusal outline: Pentagon
| Occlusal table: Square
140
Largest cusp in Mn 2nd PM
B > ML > DL
141
of lobes for 3 cusp type Mn 2nd PM
5
142
3 cusp type Mn 2nd PM, frequently has ___ pit
Central
143
Only PM that may exhibit 3 pits
Mn 2nd PM
144
SAME total # of pits on the occlusal surface of Mx M1
3, Mn 2nd PM
145
Which of the following teeth have the same # of pits as the Mx M1
3 cusp type, Mn 2nd PM
146
If the Mn 2nd PM is congenitally missing, the roots of the primary Mn 2nd PM will not be resorbed and the primary tooth may be retained.
TRUE
147
Only PM with no mesial root depression
Mn 2nd PM
148
Close to mental foramen
Mn 2nd PM
149
PM most likely to be congenitally missing
Mn 2nd PM
150
PM most likely to have a central pit
Mn 2nd PM, 3 cusp type
151
PM most likely to have 1 root and 1 canal
Mn 2nd PM
152
Root is closest to the mental foramen and is longer than the 1st PM
Mn 2nd PM
153
Mental foramen is located most closely to...
Mn 2nd PM
154
Mx PMs have roots that are longer than incisors but shorter than canines
TRUE
155
Mx PMs have crowns that are shorter than canines but longer than molars
TRUE
156
Crown height decreases as you go posterior
TRUE
157
Like all Mx posteriors, they have a trapezoidal shape when viewed interproximally
TRUE
158
They have inciso-gingival contact points in the middle third
TRUE
159
** Questions are more heavily weighted towards the Mx 1st PM VS. Mx 2nd PM
Important Test Taking Tip, if you don't know the answer choose Mx 1st PM
160
Mx 1st PM B/L outline
Pentagonal
161
Mx 1st PM M/D outline
Trapezoidal
162
Mx 1st PM occlusal outline
Hexagon w/ unequal sides; kinda looks like a kidney bean in cross-section DUE TO the mesial concavity
163
Largest of all PMs
Mx 1st PM
164
PM or molar tooth with greatest cervico-occlusal crown height
Mx 1st PM
165
cusps on Mx 1st PM
2 = 1 buccal, 1lingual
166
Lingual cusp is typically 1.0 mm shorter than the facial cusp
Mx 1st PM
167
Buccal cusp is slightly to the distal
Mx 1st PM
168
PM where mesial cusp ridge is longer than distal cusp ridge (B cusp slightly to distal)
Mx 1st PM (so does primary maxillary canine)
169
Mx 1st PM occlusal view
Long central groove, few supplemental grooves
170
Mesial marginal ridge developmental groove that moves onto the root surface (also a mesial concavity)
Mx 1st PM
171
Mesial marginal ridge is taller than distal marginal ridge ( = the DMR is more cervical than the MMR)
Mx 1st PM
172
roots for Mx 1st PM
2 pulp horns, 2 roots (bifurcate halfway down), 2 canals
173
Canals for Mx 1st PM
Lingual canal is bigger than facial canal
174
Largest PM
Mx 1st PM
175
Has a concavity in its crown gingival to the mesial contact area
Mx 1st PM
176
On facial cusp, has a longer mesial cusp slope than distal cusp slope
Mx 1st PM (so does primary Mx canine)
177
Has mesial marginal ridge developmental groove
Mx 1st PM
178
Lingual cusp is to the mesial
Mx 1st PM
179
Has the shape of a kidney in cross-section
Mx 1st PM
180
Bifurcates halfway down the root
Mx 1st PM
181
Has the greatest demarcation between the pulp chamber and the pulp canals
Mx 1st PM
182
Lingual cusp is the sam height as the facial cusp
Mx 2nd PM (unlike Mx 1st PM)
183
No concavity on the crown
Mx 2nd PM
184
Instead of a long central groove w/ few supplemental grooves, it has a short central groove w/ a lot of supplemental groves that make it look wrinkly.
Mx 2nd PM
185
WRINKLY occlusal anatomy
Mx 2nd PM - Instead of a long central groove w/ few supplemental grooves, it has a short central groove w/ a lot of supplemental groves that make it look wrinkly.
186
The mesial cusp slope is shorter than the distal cusp slope
Mx 2nd PM
187
The Mx 2nd premolar has 1 root and 50% have 2 canals
TRUE
188
Mx 2nd PM B/L outline
Pentagonal
189
Mx 2nd PM M/D outline
Trapezoid
190
Mx 2nd PM occlusal outline
Rounded hexagon
191
Smaller than the Mx 1st PM
Mx 2nd PM
192
Buccal lingual cusps are same height
Mx 2nd PM
193
Lingual cusp is 1 mm shorter than buccal cusp
Mx 1st PM
194
Mn Canine B/L outline
Pentagonal
195
Mn Canine M/D outline
Triangular
196
Mn Canine incisal outline
Diamond/oval
197
Mn Canine viewed form the proximal, the facial outline is made up of:
One continuous arc & differs from the outline of a Mx canine = Mx canine has 3 planes
198
of planes on Mn canine
3
199
Mn Canine viewed from the facial, the mesial outline from the contact area to the root apex....
Relatively straight, mesial axial surface is almost parallel to the long axis of the tooth
200
Mn canine mesial contact pt
Incisal
201
Mn canine distal contact pt
Middle
202
Longest crown
Mn canine
203
2nd longest tooth
Mn canine (Mx canine is longest)
204
2nd longest root
Mn canine (Mx canine is longest)
205
FL measurement > MD measurement
Mn and Mx canine
206
Canine relatively flat in the fossa area, poorly developed in the marginal ridge and cingulum area
Mn canine
207
Cusp tip lingual to the faciolingual long axis bisector
Mn canine
208
From an incisal view of Mn canine, which surface is more visible?
Facial
209
ONLY tooth with root inclined mesially
Mn canine
210
Anterior tooth most likely to have a bifurcated root
Mn canine (more often than Mx canine, Mx center, L root of Mx M1, DB root of Mx M2)
211
Mx M1 B/L outline
Trapezoid
212
Mx M1 M/D outline
Trapezoid
213
Mx M1 occlusal outline
Rhomboid
214
Mx M1 acute angles
DL (smallest cusp) and MB
215
Mx M1 obtuse angles
DB and ML (largest cusp)
216
4 f(x) cusps + cusp of Carabelli
Mx M1
217
3 pits - mesial, central, distal
Mx M1 (Mn 2nd PM, Y type also has 3 pits)
218
of cusps for Mx M1
4 f(x) + cusp of Carabelli; but, 5 lobes
219
of pits for Mx M1
3 pits - mesial, central, distal
220
of grooves for Mx M1
4 grooves
221
Lingual groove Mx M1
Extends onto occlusal and becomes the distal oblique groove; ends in distal pit; in middle of tooth on Mx 2nd & 3rd, it is more positioned distally)
222
Central groove Mx M1
Runs from mesial pit to central pit
223
Mx M1 mesial border of the oblique ridge
Mesial pit
224
Cusp of Carabelli
Mx M1, lingual side of mouth; lingual to ML cusp
225
of lobes Mx M1
5 lobes
226
Teeth that form from 5 lobes
Mx M1
Mn M1
Mn 2nd PM, 3 cusp type "Y"
227
Only tooth with 2 triangular ridges on one cusp
Mx M1
228
Mx M1 - ridge head down the cusp to the central groove, where it meets the triangular ridge from the mesio-buccal cusp to form the...
Transverse Ridge
229
Mx M1 - triangular ridge heads down the mesiolingual cusp to meet the triangular ridge of the distobuccal cusp and forms the...
Oblique Ridge (oDBML)
DBML
230
The transverse groove of the oblique ridge connects..
the distal fossa and central fossa
231
Occlusal surface usually distinctly divided by a ridge from the ML to the DB cusp
Oblique Ridge
232
Forms the distal boundary of the central fossa in Mx M1
Oblique Ridge*
233
Passes through the DF sulcus (or angular sulcus) of the permanent Mn M1
Oblique Ridge
234
Opposes the developmental groove between the DF and distal cusps of Mn M1
Oblique Ridge
235
Same height as marginal ridges in Mx M1
Oblique Ridge
236
4 f(x) cusps, but only 3 form cusp triangle
MB, ML, DB
DL cusp gets progressively smaller on Mx M2 and M3
237
Found on all Mx molars
Cusp triangle (MB, ML, DB)
238
Mx M1 cusp size
ML > MB > DL (but gets smaller more posteriorly) > DB
239
Largest and longest cusp of any Mx molar tooth
ML cusp (also, cusp of Carabelli adds to size)
240
Mx M - ML cusp tip located ___ to the MB cusp tip
Distal
241
Mx M - DB cusp tip located ___ to the MB cusp tip
Lingual
242
Mx M - Transverse ridge is up and down like a T
Made of ML and MB
243
of roots in Mx M1
3 roots
244
Mx M1 root length
P (longest) > MB (widest faciolingually, MB2 canal) > DB
245
Only root in the mouth with both facial and lingual concavity
Mx M1 Palatal Root
246
Longest Mx M1 root
Palatal
247
Widest faciolingual root of Mx M1
MB root
248
Mx M1, when viewed form the buccal, in line with buccal groove
Palatal root
249
Mx M1, when viewed form the lingual, in line with the midpoint of MD diameter
Palatal root
250
of pulp horns for Mx M1
4 pulp horns
251
Mx M1 distance of furcations from cervical line
M (shortest)
252
Only tooth that is wider lingually than facially
Mx M1
253
The widest tooth faciolingually
Mx M1
254
The only tooth with 2 triangular ridges on 1 cusp (the mesio-lingual cusps)
Mx M1
255
Has a concavity on the distal surface of its crown
Mx M1
*hard to adapt matrix band
256
Roots are closest to the maxillary sinue
Mx M1
257
Mn M1 B/L outline
Trapezoid
258
Mn M1 M/D outline
Rhomboid
259
Mn M1 occlusal outline
Pentagon
260
cusps Mn M1
5 cusps (3 buccal, 2 lingual)
261
pulp horns Mn M1
5 pulp horns
262
Mn M1 largest cusp
MB
263
Mn M1 2nd largest cusp
ML
264
Is the largest proximal crown surface of a Mn M1 mesial or distal?
Mesial of Mn M1
265
Mn M1 smallest cusp
D (distal cusp projects into the distal fossa of Mx M1)
266
Distal cusp of Mn M1 projects into the..
distal fossa of Mx M1
267
Mn M1 lingual cusps are __ and more __ than buccal cusps
higher; pointed
268
All 5 cusps viewable from the facial
Mn M1
269
of triangular ridges Mn M1
5
270
of grooves on Mn M1
4 grooves (1 central, 2 buccal [B and DB], 1 lingual)
271
Buccal groove of Mn M1 separates..
MB and DB cusps
272
Mn M1 DF groove separates DF and distal cusps
** Don't mix distal with distofacial
THERE IS NO DISTAL GROOVE, only A DISTOFACIAL/DISTOBUCCAL GROOVE
273
Which developmental groove is between the distofacial cusp and the distal cusp of Mn M1?
Distofacial groove
274
of developmental grooves distinguishing Mn M1 from Mn M2?
```
4 = Mn M1
3 = Mn M2
```
275
Of all the molars, the mesial fossaa of the Mn M1 is most distinctly separated by the remainder of the occlusal table by a...
Transverse ridge
Don't be tricked by Oblique Ridge (only on Mx M)
276
MD dimension (slightly) ___ BL dimension in Mn M1
Greater than; the Mn M1 is 1mm wider mesiodistally than faciolingually
5 cusps with 3 cusps on the buccal
277
Has longest MD measurement of all permanent molars
Mn M1
278
f(x)ing cusps on Mn M1
5 cusps
279
of pulp horns on Mn M1
5 pulp horns
280
of roots on Mn M1
2 roots
281
canals Mn M1
3 canals (2 in MB*)
282
Roots incline ____ in Mn M1
distally
283
Pulp CHAMBER (not canal) is ___ MD than FL in Mn M1
wider
284
Mesial root of Mn M1 is typically very thin MD, much wider FL, and concave on both M & D surfaces
TRUE
285
Mn M1 mesial root has a strong distal curvature in the apical 1/3rd
TRUE
286
Mn M1's biggest and straightest canal
Distal root
287
of canals in Mn M1 mesial root
2, very small
288
Primary teeth have thinner (1 mm VS. 2.5 mm) whiter, less calcified enamel that is more uniform in depth than the enamel of permanent teeth
TRUE
289
Primary teeth are smoother with less pits and grooves
TRUE
290
In primary teeth, enamel stops abruptly at
CEJ
291
Primary teeth buccal and lingual surfaces are flatter above the HOC
TRUE
292
Deciduous/primary teeth have enamel rods which go from the
DEJ occlusally (permanent teeth have rods directed gingivally)
293
Primary teeth have bigger cervical bulges (especially the M1s)
TRUE - more bulbous, CEJ more obvious (dips gingivally)
294
Primary teeth have ____ root trunks
Shorter; may be absent
295
Primary teeth have roots which are more flared/divergent and skinny
TRUE - gotta make room for developing succadenaous teeth
296
Primary dentition: fewer molars and NO premolars
2 VS. 3 molars
297
Primary teeth have proportionately _____ pulp cavities than permanent teeth
Larger; think that they don't have much time to develop secondary and tertiary dentin
298
Primary teeth have ___ DEJ
thinner; thus, easier to have pulp exposure
299
Primary teeth have more prominent pulp horns that extend closer to cusp tip
True - long and pointed
300
Primate spaces: Maxillary
Btwn lateral & canine
301
Primate spaces: Mandibular
Btwn canine & 1st molar
302
Only incisory in both dentitions with MD diameter > height
Primary Mx Centrals
303
Wider MD & shorter incisocervically than permanent teeth
Primary Mx Centrals
304
Which tooth has prominent labial and lingual cervical ridges?
Primary Mx Centrals
AFJLT?
305
Mesial cusp ridge longer than distal cusp ridge
Primary Mx Canine (opposite of perm Mx canines)
306
Which other permanent tooth also has a mesial cusp ridge longer than distal cusp ridge (primary mx canine)?
Mx 1st PM
307
Longer and sharper cusp than the permanent
Primary Mx Canine -- makes sense because it hasn't been worn down at all
308
Crown somewhat resembles a permanent PM, but the root form is typical of a permanent molar (3 roots)
Primary Mx M1 (distal half very small, if you knock it off, it looks like a PM)
309
Does not a have a straight cervical line
Primary Mx M1
310
CEJ dips more on the mesial half than the distal half
Primary Mx M1
311
roots for Primary Mx M1
3 roots
312
Primary Mx M1 Occlusal pit-groove area
H-shaped
313
Looks like Mx M1
Primary Mx M2 (it also has a Cusp of Carabelli, oblique ridge, transverse ridge, DL groove)
314
Last primary tooth to erupt
Primary Mx M2
315
Permanent Mx M1
Deciduous Mx M2
316
Has greatest FL dimension of all primary teeth
Primary Mx M2
317
Unlike any other tooth
Primary Mn M1
318
Has prominent transverse ridge distinctly separating the mesial portion from the remainder of the occlusal table
Primary Mn M1
319
Most difficult tooth to restore; Class II very difficult because of prominent MMR
Primary Mn M1
320
of cusps in primary Mn M1
4 cusps = 4 pulp horns (dont' think that it has just because Mn M1 has 5); also, ML cusp is highest and sharpest
321
of cusps in Mn M1
5 pulp horns
322
Prominent MB bulge + cervical ridge
Primary Mn M1
323
S-shaped cervical ridge
Primary Mn M1
324
Which primary tooth has the CEJ apically positioned on the mesial 1/3 of the crown?
Primary Mn M1
325
Which side of the primary Mn M1 is apically positioned?
Mesial side
326
Closely resembles permanent Mn M1 occlusally, EXCEPT MB, DB and distal cusps are nearly equal in size
Primary Mn M2
327
What is the easiest way to distinguish between Primary Mn M2 and Mn M1 (these get smaller)?
Compare size of distal cusps; distal cusp is relatively much bigger in the primary
328
of cusps in primary Mn M2
5 cusps
329
Of the primary molars, which tooth bears the greatest resemblance to a PM?
Primary Mx M1
330
Which primary tooth has a facial cervical ridge which is so distinctly prominent that it is uniquely different from ALL other teeth?
Primary Mn M1
331
Which tooth has an H-shaped occlusal pattern?
Primary Mx M1
332
Which tooth typically has a transverse ridge, oblique ridge, and a DL groove
Primary Mx M2
333
Which tooth would be most difficult to do an MO?
Primary Mn M1
334
Which primary mandibular molar has 5 cusps?
Primary Mn M2
335
Which tooth has prominent labial and lingual cervical ridges?
Primary Mx Centrals
