Part 1 Flashcards
1
Q
calcification of primary roots completed?
A
3 -4 yo
2
Q
eruption pattern of primary teeth
A
1) front to back except k9
2) lower before uppers except for laterals
3
Q
primary spacing for anterior teeth is most frequently caused by
A
growth of dental arches
4
Q
direction of PRIMARY enamel rods in the cervical 3rd points
A
occlusal direction
5
Q
primary molars differ from permanent molars in that their____
A
roots more divergent
6
Q
primary molars lack a ______ root ____
A
identifiable root trunk
7
Q
root trunks are
A
cej to the furcation
8
Q
primary mandibular central incisor has the smallest ______ crown dimension
A
faciolingual crown dimension
9
Q
primary and perm man central incisros is _____ ____ tooth
A
bilaterally symmetrical tooth
10
Q
in delayed resorption of primary incisors the permanentn incisors usually erupt _____
A
lingually [shark teeth]
11
Q
primary central incisors exhibits a _____ ____ ___ both on the facial and lingual surfaces
A
prominent cervical ridge both facial and lingual
12
Q
facial view the primary k9 has a ____ ___ slope longer than the __ ___ slope
A
mesial incisal slope
LONGER
than
distal incisal slope
13
Q
cusp tip of the primary k9 is offset to ___
A
distal
14
Q
mesio incisal slope of priamry k9 is longer than the distal incisal slope bc the cusp tip is offset to the distal
TF
A
TRUE
15
Q
primary max 1st Molar the crown resembles
permanent ____
A
premolar
16
Q
primary max 1st molar has how many roots ?
resembles _____ _____
A
3 roots
perm max molars so 3 roots
17
Q
The most prominent cervical ridge is for _____ ___ ___ ___ on the ___ ___ surface
A
primary max 1st M
on the Mesial facial surface
18
Q
which primary tooth has the oblique ridge
A
primary max 2nd Molar
19
Q
what is the obilque ridge
A
triangular ridge of the DB cusp
and
distal cusp ridge of the ML cusp
20
Q
which cusp is the cusp of caribelli on?
which primary tooth has the cusp of caribelli?
A
ML cusp
primary Max 2nd molar
21
Q
the primary 2nd max molar is the only tooth with:
1
2
3
A
transverse ridge
oblique ridge
DL groove
22
Q
what primary tooth is the last tooth to erupt
A
primary max 2nd molar
centrals [6], laterals [9], 1st M [13], k9 [18], 2nd M [2 yo]
23
Q
Primary 2nd Molars exhibits ____ ___ than the primary 1st molar
A
more cusps
24
Q
the primary tooth with the most prominent cervical ridge on the facial
A
primary mand 1st molar
25
primary tooth with the most distinctly prominent facial cervical ridge is
primary mand 1st molar
26
facial view the primary mand 1st molar the CEJ is
apically positioned on
\_\_\_\_\_ \_\_\_\_
mesial 1/3
27
which tooth exhibits the distal triangular fossa
primary mand 1st molar
28
the main fossa or central fossa is displaced to \_\_\_
of which primary tooth
distal
primary mand 1st molar
29
which tooth has the most distinct transverse
primary mand 1st molar
30
which tooth is the most unique and does not look like any perm tooth
primary mand 1st molar
31
the highest and sharpest cusp on the primary mand 1st molar is
ML cusp
32
the biggest cusp on the primary mand 1st molar is
MB
33
teeth whose primary function is for biting
incisors
34
which tooth has the greatest facio-lingual axial inclination
max central incisors
35
which tooth has the greatest cervical curvature than any other tooth?
which surface?
max central incisors
mesial surface greatest cervical curvature
36
CEJ dips deeper:
Ant vs posterior
max vs man
mesial vs distal
CEJ dips deeper on
ant
max
mesial
\*\* think of max central incisors
37
max central incisors are the ONLY ANTERIOR tooth that is
wider _____ \_\_\_\_\_ than ____ \_\_\_
wider mesio facially
than
facio - lingually
38
max central inciors has the greatest _____ \_\_\_\_ crown dimension than any other ANTERIOR tooth
Mesio distal
39
which tooth has nearly identical measurments of
inciso cervical vs mesio distal
max central incisors
40
the contact bt the max central incisor and the lateral incisor makes the ____ embrasure larger than the _____ embrasure
lingual embrasure larger than facial embrasure
\*\*this is typical of most teeth
41
the incisor embrasure bt the max centrals are ______ than the incisor embrasure bt the max central and lateral
smaller
42
which tooth has the most crown shape variation
max lateral
43
Except for the 3rd molars which tooth has the most deviation in crown morphology
max lateral incisor
44
which tooth has the most abnormal relation and contact with the adjacent teeth
max lateral incisor
45
other than 3rd molars which tooth is most often congentially missing
max lateral incisors
3rd molars \> max lateral incisors \> man 2nd PM
46
which NON MOLAR tooth is most freq to have mesial and distal pulp horn
max central incisor
47
non molar tooth that is least likely to have bifurcated root
max central incisor
48
max lateral is most likely to have _____ \_\_\_\_\_ caries
lingual pit caries
49
\_\_\_ ___ of max lateral incisors complicates root planning
DL groove
50
\_\_\_ ___ angle of the ____ \_\_\_ has the greatest convexity of all max anterior teeth
distal incisal angle
max lateral
51
which tooth has the most prominent marginal ridges of all anterior teeth
max lateral incisors
52
max lateral incisors has the most
distinct and deepest
\_\_\_\_ \_\_\_
of all anterior teeth
lingual fossa
53
which tooth has the smallest mesio distal crown width of any maxillary teeth
max lateral
54
max lateral has __ \_\_\_ measurement
that is nearly identical to ___ \_\_\_
mesio distal
facio lingual
max lateral
55
mesio distal width of the max lateral is ___ than the max central
narrower mesio distal width
56
max lateral has a distal contact that is ____ \_\_\_\_ of any incisor [usually very incisal]
furthest cervically
\*\* junction of the middle and incisal 1/3
57
max lateral has a distal contact ____ both
inciso cervically
facio lingually
centered
58
IJ [#9] JM [#10] JM [#11]
\*\* I just jacked michael jackson's moped
IJ JM JM
I - mesial contact of #9 is incisal
J - distal contact of #9 is junction of incisal middle
J - mesial of #10 junction of incisal middle
M - distal of #10 is middle
J - mesial of #11 junction of middle and incisal
M - distal of #11 is middle
59
maxillary lateral is ___ to or ___ than the max central in root length
equal to larger
60
mand central is distinguished by the cervical curvature which is greater on ____ than \_\_\_\_
mesial greater than distal
\*\* CEJ question dips further on the mesial
61
which teeth [2] have the most freq concave areas on the M and D root surfaces
man central and man laterals
62
which tooth has the smallest crown dimension of any tooth
mand centrals
63
which tooth has the sharpest set of incisal angles
mesial and distal
mand centrals
64
mand central has proximal contacts taht are \_\_\_
same level
incisally - incisally
65
mand central incisors have proximal contacts a the approximately same level mesial and distal
TF
true
66
man central incisors have contact points at the same incisocervical level
true
67
which teeth [2] generally occlude with only one opposing tooth
man central incisors
max 3rd molars
68
which is the first SUCCENDANEOUS TOOTH to erupt in the mouth
perm mand central incisors
69
perm 1st molar is a succadanenous tooth
false
70
B and L embrasures of man central incisors may be the same size
TF
true
71
which tooth has the crown tilting distally to the long axis of the tooth
man lateral incisor
72
mesio distal width of man lateral incisors is ____ than man central incisor
wider
73
which tooth has the greatest cervical prominence of any
anterior tooth
max k9
74
max k9 from a promixal view [mesial or distal] tends to be positioned with the most _____ axis
vertical axis
75
which tooth ahs the greatest overall total tooth length
max k9
76
which tooth has the longest root of any tooth
max k9
77
max k9 has the greatest ___ \_\_\_ crown dimension
of any anterior tooth
facio lingual
78
max k9 distal contact is located?
IJ JM JM
distal of k9 is middle = centered
79
which tooth is the only tooth that has potential contacting both anterior and posterior teeth
max k9
80
max k9 cusp tip is located _____ to the ___ axis
facial to the lingual axis
81
TF
if the max k9 cusp tip is located slightly facial than the
lingual view is more visible from the incisal view
true
82
the ___ \_\_\_\_ lobe of max k9 includes the cusp tip
[different from mand k9]
middle facial lobe includes the cusp tip
83
max k9 has a ____ bulge
making the mesial and distal \_\_\_\_\_
distal
assymetrical
84
which tooth from the facial view has a crown form
pentagonal
max k9
85
which tooth has the straightest mesial alignment from crown to root
mand k9
86
the ____ surface of the crown of man k9 us
almost ___ to the long axis of the tooth
mesial surface of mand k9
parallel to the long axis of tooth
87
mand k9 has the _____ crown dimension of any tooth
longest crown of any tooth
88
mand k9 has less ____ \_\_\_
than max k9
less prominent cingulum
89
mand k9 is narrower _____ \_\_\_ than
max k9
narrower mesio distally
90
which anterior tooth most frequently exihibits a bifurcated root
mand k9
91
bifurcation of mand k9 roots when present creates
\_\_\_\_ and ___ root
facial
lingual
roots
92
which tooth has the longest root length of any mandibular tooth
mand k9
\*\*\*careful the longest root of any tooth is max k9
93
cross section of the root of mand k9 is _____ \_\_\_\_
irregularly oval cross section
94
cross section of the mand k9 at the CEJ
is ____ but wider ___ \_\_\_ at the labial
ovoid
but wider mesio distally at the labial
95
cervical cross section the root of mand k9 is ___ in mesio distal dimension
flattened mesio distally
96
compared to the max k9 the mand k9 has contact areas located more \_\_\_\_
incisally located contacts
97
which tooth has a continuous covex facial surface from incial to apical end
mand k9
98
mand k9 makes a ___ shape from
crown tip to root apex
C shape
99
mand k9 has incial edge ____ to the long axis
lingual
[opposite of max k9 with more facial that is why we can see more the lingual from the incisal view]
100
which tooth has the most pronounced developmental marginal groove of any maxillary tooth
max 1st PM
101
which surface is the developmental marginal groove of the max 1st PM on
mesial marginal developmental groove
102
max 1st PM has a ___ \_\_\_ that makes it difficult
to adapt to a matrix band
mesial concavity
103
which tooth exhibits a cervical cross section that is
kidney shaped root outline
max 1st PM
104
TF
the cervcial cross section of max 1st PM exhibits a kidney shaped pulp chamber floor
true
\*\* the indent that makes the kidney shape is the mesial concavity
105
non molar tooth that freq exhibits 3 roots
max 1st PM
106
the facial cusp of max 1st PM is offset to the \_\_\_\_
distal
107
TF
mesio facial cusp ridge is longer than the distal facial cusp ridge of
max 1st Pm
true
bc of the facial cusp offset to the distal
108
which tooth has a longer mesial cusp ridge just like the
primary max k9
perm max 1st PM
109
max 1st Pm has the ___ \_\_\_\_\_ inclines
steepest cusp inclines
110
which teeth [2] where the lingual cusps are offset to the mesial
Max PM 1 and Max 2nd PM
111
maxillary 1st PM is the posterior tooth with
greatest ____ \_\_\_\_ crown height
cervico occlusal crown height
112
the non molar tooth having the sharpest
demarcation bt the pulp chamber and canal
Max 1st Pm
113
TF
size and position of the cusps are more identical for
max 2nd PM than max 1st PM
true
114
max 2nd PM the two cusp are ____ height
equal
115
which tooth is the most symmetrical posterior tooth
max 2nd Pm
116
why does the max 2nd PM look wrinkly
A) long central groove with few supplemental grooves
B) short central groove with lots of supplemental grooves
B) short central groove with lots of supplemental grooves
max 2nd Pm
117
which tooth has a fossa that are closest in size
compared to other posterior teeth
max 2nd PM
118
which Pm has a uniquely prominent triangular ridge
mand 1st PM
119
which PM has snake eyes and no central groove
mand 1st PM
120
TF
mand 1st PM has freq both a separate mesial and distal pit
[snake eyes] due to the triangular ridge
true
121
which tooth has mesiolingual developmental groove
mand 1st PM
122
where did the mesiolingual developmental groove on #21 originate from?
occlusal pit
123
TF
ML developmental groove on #21 extends onto the proximal surface
true
124
which tooth is the only tooth with mesio lingual groove
mand 1st PM
125
ML developmental groove of #21 makes the
mesial marginal ridge run at ____ degree angle
45 degree angle
mesial marginal ridge
126
mand 1st pM the mesial marginal ridge is more _____ than the distal marginal ridge
more cervical
127
more of occlusal surface can be seen from the ___ than the ___ for the mand 1st PM
mesial see more occlusal
\*\* due to the 45 degree MMR
128
which tooth from the occlusal view is diamond shaped
mand 1st Pm
129
in the rare event of a second canal for mand 1st PM it is likely to be \_\_\_\_
lingual
130
which tooth is frequently likely to have only one pulp horn
mand 1st Pm
131
lingual cusp of mand 1st PM is ____ height of facial cusp
2/3 lingual cusp height
132
TF
lingual cusp of mand 1st PM is similar to
development of the cingulum of k9
true
133
TF
lingual cusp of mand 1st PM in normal occlusion occludes
false
lingual cusp does NOT occlude
134
\_\_\_\_ has the most variation of all posteior teeth in facial versus lingual cusp height
mand 1st PM
135
facial masticatory mucosa [attached gingiva] is the narrowest on the facial aspect of _____ \_\_\_\_
mand PMs [both]
136
which tooth is the smallest facio lingually of any posteior tooth
mand 1st PM
137
which tooth is closest of all MANDIBULAR TEETH in
FL vs MD diameter
mand 1st Pm
138
occlusal view, coronal outline of mand 2nd PM is \_\_\_\_
pentagonal
139
the occlusal table of mand 2nd Pm is
rectangular
140
the PM that is most likely to have crescent - shaped central developmental groove is \_\_\_\_\_\_
mand 2nd PM
141
shortest interdental papilla is bt the ____ and the \_\_\_\_
mand 2nd Pm and mand 1st M
142
Y type mand PM has ____ facial and ___ lingual cusp
Y type mand PM
1 facial cusp
2 lingual cusp
143
Y type mand 2nd PM has the same number of occlusal pits as the \_\_\_\_
maxillary 1st M
144
which PM is the only PM with multiple lingual cusps
mand 2nd Pm
145
Mand 2nd PM is the only Pm with ___ \_\_\_\_
lingual groove
\*\* as seen on the Y type mand 2nd Pm [2 lingual cusps and 1 facial cusp]
146
the mandibular 2nd PM is the only PM with a _____ fossa
central fossa
147
which PM is the one that is most frequently with a single central pit
mand 2nd PM
148
most congentially missing PM
mand 2nd PM
149
occlusal outline for max 1st molar is
rhomboidal
150
mesiofacial and distolingual angles from the occlusal outline tend to be ____ angles
acute angles
MF and DL [NOT OBLIQUE RIDGE]
so skinny bc not obese = oblique
151
mesiolingual and distofacial angles from the occlusal outline tend to be ___ angles
obtuse angles = oblique ridge = obese
152
max 1st Molar tends to taper towards facial rather than lingual so the buccal embrassure is ____ than the lingual
buccal is larger than the lingual
\*\* max central the lingual is larger than the buccal
153
most prone facial and lingual surfaces of molars:
\_\_\_\_ of max
\_\_\_\_ of mand
lingual of max
buccal of mand
154
largest root of the max 1st molar is
palatal
155
the smallest root of max 1st molar is
DB
palatal \> MB [needs room for mb2] \> DB
156
facial view the apex of the ____ root is in line with facial groove
lingual root aka palatal
157
lingual view the, palatal root is in line with the midpoint of the MD diameter
TF
true
158
when a 4th pulp canal is present in a max 1st molar it is located in the _____ canal
MB canal
159
what are the 3 furcations of the max 1st M
M
B
D
160
of the 3 furcations, [M B D] of the max 1st molar,
\_\_\_\_ is the closest to the cervical line
mesial furcation is closest to the cervical line
161
distance of furcation to the cervical line [CEJ]
M \< B \< D
so the further distal the further away from CEJ
162
oblique ridge of max 1st molar forms ___ boundary of the central fossa
distal boundary
163
the center of the oblique ridge on max 1st molar is the ___ level of marginal ridge
same level
164
oblique ridge does 3 things
1) connects the cusps DB to ML
2) forms the distal boundary of the central fossa
3) occlusal outline angles, same as DB to ML = obtuse
165
ML cusp of the MAX MOLARS occludes with
\_\_\_\_\_ of MAN MOLARS
central fossa
166
\_\_\_\_ has the greatest faciolingual diameter of the crown of all teeth
max 1st molar
[think cusp of caribelli]
167
\_\_\_\_\_ is the closest in size in FL vs MD of any maxillary posterior teeth
max 1st M
168
max 1st Moalr has wider MD width toward the ____ than \_\_\_\_
wider MD on facial \> lingual
169
\_\_\_\_ cusp of the MAXILLARY MOLARS is the only one that is not part of the molar cusp triangle
DL
170
\_\_\_\_ cusp of the maxillary 1st M is the largest and longest cusp
ML
171
tooth that is most likely forced into the maxillary sinus during extraction is the \_\_\_\_
max 1st M
172
max 1st molar has ____ concavity that pose a problem in matrix placement
distal concavity
173
the crown of the max 1st molar has a ____ distolingual groove than the second max molar
shorter distolingual groove
174
TF
1. DL cusp of max 2nd M is not part of the molar cusp triangle
2. as you move more posterior distal cusp gets smaller
true
true
175
3 cusp type heart shape molar is usually
max 3rd M
176
TF
moving more posterior the roots are less divergent [more fused] and greater distal inclination [curves towards the distal]
true
177
cross sectional outline at the cervical is _____ for the perm Max 2nd Molar
triangular
178
which tooth has a groove pattern that is considered Y or Dryopethicus pattern
mand 1st Molar
179
occclusal outline of mand 1st molar is
pentagon
180
smallest cusp of mand 1st molar
distal
181
cusp size for mand 1st molar
MB \> ML \> DL \> DB \> D
182
which tooth has the largest MD crown dimension of ANY TOOTH
mand 1st M
[think 3 buccal cusp]
183
mandibular molars are the only MANDIBULAR TEETH wider MD than FL
TF
true
184
MAND MOLARS are the only POSTERIOR teeth that are wider MD than FL
TF
true
185
\_\_\_\_ has the greatest MD diameter of ALL MOLARS
mand 1st Molars
186
Mand 1st Molars are wider MD \> FL
1
2
3
4
1. all molars
2. all mandibular teeth
3. posterior teeth
4. all teeth
187
mand 1st molar _____ FL crown dimension of any MAND tooth
largest of any mand tooth
[max 1st M is the largest of all teeth - cusp of caribelli]
188
Mand 1st molar has the largest ___ \_\_\_ crown dimension of any mandibular molar
occlusal cervical
189
facial surfaces of mand molars are located medial to board of \_\_\_\_\_\_\_
ascending ramus
190
mand 1st M has ___ developmental grooves and the mand 2nd molar has ___ developmental grooves
Mand 1st M = 2 developmental grooves [distal cusp]
mand 2nd M = 1 = buccal groove
191
what is the developmental groove bt the distobuccal cusp and the distal cusp of the mand 1st molar called
distofacial
192
mand 1st molar has __ roots and ___ canals
2 roots
3 canals
193
mand 1st molar has the longest root of any other \_\_\_\_\_
molar
[longest root of any tooth is max k9]
194
\_\_\_\_\_ has the greatest root separation than any other tooth
mand 1st molar
195
mid root cross section of mand 1st molar mesial is ____ than distal
mesial largest [mb2]
196
which tooth has the greatest mesial root FL dimension
mand 1st molar
197
\_\_\_\_ cusp of the mand molars occludes in the central fossa of the maxillary molars
DB cusp
198
ideal position and height of lingual cusps of mand 1st molar accomodates working movements
TF
true
199
groove pattern of the mand 2nd molar is considered a ___ pattern
cross + pattern
200
which tooth has cruciform occlusal pattern
mand 2nd molar
201
occlusal view the greatest FL diameter of the Mand 2nd Maolr is in the \_\_\_\_\_
mesial 1/3
[thats how you tell bt Rt and Lt]
202
crown of the mand 2nd molar inclines to the ____ and \_\_\_
M and L
[think of the Mesial 1/3 weighs it down]
203
MAND MOLARS have long axis of their root apices ____ and their crowns \_\_\_\_
facial apices
crowns linguals
204
same as the mand 1st molar, mand 2nd M, the facial surfaces are mesial to the ascending ramus
TF
true
205
which molar most frequently has only 3 cusps
max 3rd molar
206
which tooth most variation in crown morphology
3rd molars
[2nd most variation in crown morphology = max lateral]
207
tooth that has the greatest root inclination than ANY OTHER TOOTH
mand 3rd molars
[greatest cruvature to the distal]
208
tooth that has the shortest root of any MAND TOOH
mand 3rd M
209
mandible moves from CO to edge to edge
condyles move
forward
downward
210
non working condyle moves
downward
forward
medially
211
\_\_\_\_ plays the greatest role in discluding posterior teeth in
latero protrusive
anterior guidance
212
teeth are in ____ during non masticatory swallowing
ICP
213
TF
tooth contact almost exclusively determines ICP
true
214
CR is a ___ position, MOST \_\_\_\_\_\_
CO is ___ position
rest position = \_\_\_\_\_\_
CR is =
1) ligament/ jaw relation position
2) MOST REPEATABLE
CO = tooth position
rest position = musculature
215
in posselts envelope of motion
\_\_\_\_ is the most superior point
most anterior point
most inferior point
SUPERIOR = maximum ICP
that is when ICP = CO
ANTERIOR = protrusion
INFERIOR = max opening
216
side shift of mandible =
bennett movement
217
bennett movement occurs during the ___ stage of lateral movement
earliest
218
bennett movement is the bodily shift of the mandible twoard the \_\_\_\_\_
working condyle
219
physiological rest position aka
postral position
220
in posslets envelope of motion, the PP [postral position = physiological resting position] is ___ mm below ICP/CO
2 - 4 mm
221
TF
postral postion = physiological rest position is a border position
false
not a border position
222
moving form postral postion to CO using ____ fibers
anterior fibers of temporalis
223
elevate mandible =
close the mandible
224
curve of spee
anterior - posterior curvature
seen in the facial view
225
usual overjet is
2 - 4 mm
226
direction of the enamel rods in perm teeth in the cervical 3rd is ____ direction
gingival direction
primary teeth is occlusal
227
main component of enamel
inorganic matter
HA?
228
Perikymata ____ enamel
Striae of Retzius ____ enamel
Perikymata outside enamel
Striae of Retzius inside enamel
229
primary function of the dental pulp
form dentin
dentinogenesis
230
caries stimulates ____ dentin
tertiary dentin
231
multirooted teeth dentin forms most radidly ____ and ___ of pulp chamber
floor and roof of pulp chamber
232
dentin that is most highly minerlized is
intra or peritubular dentin
233
DEJ occurs at the junction of ____ and \_\_\_\_
dental papilla and IEE
IEE = osteoblast
dental papilla = dentin and pulp
234
softest dental tissue
what are the 2 types
cementum
1. aceullar = coronal 2/3
2. cellular = apical 1/3
235
which primary tooth is the last to erupt
max 2nd molar
236
first pirmary teeth to erupt is
mand central incisors ~ 6 months
237
around 1 yo a child is expected to have what teeth erupted
max and mand incisors and 1st Molars
238
a parent notices a new primary tooth at 12 months which tooth is it likely
mand 1st molar
239
movement through the gums so that the clinical crown slowly gets longer
A) eruption
B) exfoliation
ERUPTION
240
who erupts faster of permanent teeth
A. boys vs girls
B. fat vs skinny
C. man vs. max
girls
skinny
mandible
241
the first permanent tooth to erupt is
mand 1st Molar
242
permanent teeth begin to form at ___ months in utero
mandibular 1st molar
4 months
243
1st succedaneous tooth to erupt is the ____ at 6 - 7 yo
mand centrals
244
when a tooth is partially resorbed by the developing tooth underneath it, the _____ part of htat tooth is longest and most securely attached to the gingiva
facial
[bc the perm is erupting lingual to the primary tooth]
245
the first evidence of root resorption on a primary incisor is seen on the ____ root surface
lingual
246
max and mand 1st molars BEGIN to calcify at \_\_\_\_\_
FORM at \_\_\_\_\_
begin to calcify at birth
form at 4 months utero
247
calcification of perm mand central incisors begins \_\_\_\_
3 -4 months
248
perm 3rd molars begin to calcify \_\_\_\_
8 - 10 years old
249
at eruption ____ % root formed
2 -3 years after eruption ___ % formed
at eruption 50% root formed
2 -3 years after eruption 100% root formed
250
active eruption of teeth occurs _____ of the root is formed
occurs AFTER 1/2 of root is formed
251
tooth makes it appearnce in the mouth when _____ root is complete
1/2
252
\_\_\_\_ % of root calcification is complete at the time of eruption
50%
253
the apex is usually fully developed by ____ years after eruption
2 -3 years
254
at 6 yo which teeth are present
20 primary teeth
4 perm 1st molars
255
first sign of mixed dentition is when ____ erupt at 6 yo
mand 1st molars
256
7 years old which teeth are normally present
18 primary teeth
6 perm teeth
- 4 perm molars
- 2 perm mandibular centrals
257
8 yo
max 1st molar would have ____ contact with \_\_\_\_
but no ___ contact
mesial contact with primary max 2nd molar
no distal contact
258
at 10 years old
would you expect the root of the perm 1st molars to be finished forming at calcifying
YN
yes
2 -3 years after eruption
259
what are the last perm incisors to erupt
max laterals
260
the earliest age by which the roots of max 1st PM are completely formed
10 - 11 is when the max 1st PM erupts
so 2 -3 years after eruption
12 - 13 yo
261
in permanent dentition, the first teeth to begin calfication are?
mand 1st molars
[mand molars begin calcification at birth]
262
perm 3rd molars begin to calcify at what age range
8 - 10 yo
263
how many teeth would a 6 yo have
24
20 primary
4 perm molars
264
around what age are the 3rd molars fully erupted with complete root structure
26 - 27 [2 -3 years after eruption]
22, 23 is when fully erupted 3rd Molars
265
which teeth exhibit a triangular outline cut at the CEJ
max centrals and max 2nd Molar
266
maxillary incisal edges are \_\_\_\_\_while mandibular incisal edges are ____ to root axis except
maxillary canine, which is ___ to root.
max incisors = centered
mand incisors = lingual
max k9 = facial
267
most scalloped tooth
mesial of max central incisor
268
Most prominent cusps on a primary man 1st molar is between which cusps? MB
MB and ML
269
12 year old patient still has which primary teeth?
K and T
270
which perm tooth is like the primary 2nd Molar
perm 1st molar
271
Primary maxillary central is wider ____ than \_\_\_\_\_
wider MD than IC
272
is when two tooth buds fuse together to make one large wide crown.
tooth fushion
273
one tooth bud tries to divide into two teeth.
germination
274
two independent pulp chambers and root canals. will start at the top of the crown and travel possibly to the apex of the root.
fushion
differ chambers and canals, and two crowns form 1 big one
275
The tooth count is normal. On the radiograph, tooth will have one pulp canal but two pulp chambers.
germination
normal count, 1 crown, 1 canal, 2 pulp chambers
276
At what age do all the premolars begin calcification?
2 yo
277
8 yr old boy break permanent maxillary central, how long do you have to wait for a root canal?
2 more years
278
