DECKS Flashcards
(204 cards)
1
Q
A stray crown is found in your office. It is an anterior tooth and has a cingulum that is offset from center. What tooth is it most likely to be?
A. maxillary canine
B. maxillary lateral incisor
C. mandibular lateral incisor
D. mandibular central incisor
A
B. Mandibular lateral incisors
2
Q
Which characteristic below is common to all mandibular anterior
teeth?
A. distinct cingula with grooves and pits
B. incisal edges that are facial to the root axis line
C. facial surfaces that are marked by pronounced labial ridges
D. continuous convexity incisoapically on the facial surface
A
D. continuous convexity incisoapically on the facial surface
3
Q
The mesial and distal aspects of the anterior teeth - central incisors,
lateral incisors, and canines, maxillary and mandibular - may be included within triangles.
The base of the triangle is represented by the cervical portion of the
crown and the apex by the incisal ridge.
A. both statements are true
B. both statements are false
C. the first statement is true, the second is false
D. the first statement is false, the second is true
A
A. both statement are true
4
Q
A clinical examination of your patient two lower incisors centered on the midline. The patient gives a history of a car accident. When he was young where he lost two of his lower front teeth. He
says that his dentist used braces to fill in the gaps. Which of the following criteria would be most reliable to decide if the remainingteeth were lateral or central incisors?
A. difference in root length
B. difference in ratio of crown length to root length
C. degree of slope of the incisal edge when viewed facially
D. difference in rotation of the crown on the root
A
D. Difference in rotation of the crown on the tooth of the root
5
Q
Which of the following statements best describes the pulp canal of
the mandibular lateral incisor?
A
D. An elliptical shaped , wider in the faciolingual in the pila chamber,but wider mesiodistal direction in the mid root area.
6
Q
Which of the following line angles is least “square”?
A.mesioincisal of the mandibular lateral incisor
B. distoincisal of the mandibular lateral incisor
C. mesioincisal of the mandibular central incisor
D. distoincisal of the mandibular central incisor
A
B. Distoincisal of the mandibular lateral incisor
7
Q
Which tooth has a pulp chamber that is least like the others?
A.maxillary central incisor
B. mandibular central incisor
C. maxillary lateral incisor
D. mandibular lateral incisor
A
A. Maxillary central incisor
8
Q
When looking at the facial or lingual aspect of all anterior teeth, they
have a:
A. trapezoidal outline
B. triangular outline
C. rhomboidal outline
D. square outline
A
A. Trapezoidal
9
Q
In maximum intercuspation, which anterior tooth is unique in that it
contacts with both anterior and posterior segments of the opposite
arch?
A • maxillary first premolar
B • maxillary canine
C• mandibular first premolar
D• mandibular canine
A
B. Maxillary canine
10
Q
A hockey player comes into your office with his six upper anterior
teeth in his hand. How can you distinguish the right canine from the
left canine?
A • the root always curves to the distal in the apical one-third
B • the distal surface is fuller and more convex than the mesial surface
C •labially, the cusp tip is placed distal to a line which bisects the crown and
root
D. • lingually, the cervical line slopes mesially
A
B. The Distal surface is fuller and more convex than the mesial surface
11
Q
Which of the following terms is specific to canines?
A. labial ridge
B. lingual fossa
C. mamelons
D. cingulum
A
A. Labial ridge
12
Q
A mother brings her three kids to your office for their annual check-
ups. Which of the following statements is most likely to be true?
A• the middle child is 11 and has no adult canine teeth
B• the youngest child is 10 and has adult mandibular canines only
C• the oldest child is 12 and has maxillary canines only
D• the youngest child is 10 and has adult maxillary canines only
C• the oldest child is 12 and has mandibular canines only
A
B. The youngest child is 10 and has adult mandibular canine only
13
Q
A hockey player comes into your office holding his friend’s right
canines (maxillary and mandibular) in his hand. His friend, a lacrosse
player, got hit by a ball flying under his mask. Which of the following
would you look for in the maxillary canine as compared to the
mandibular canine? Select all that apply.
A• it is narrower mesiodistally
B• it has a more pronounced cingulum
C• it is wider mesiodistally
D• it has a shorter root
A
B-it has a more pronounced cingulum
C-it is wider mesiodistally
14
Q
Which cusp ridge is the longest on the permanent canines?
A• labial
B• lingual
C• mesial
D• distal
A
D. Distal
15
Q
A 7-year-old boy visits your dental office with his mom for a routine
check-up. Which succedaneous teeth are expected to be present in
the child’s mouth?
A• permanent mandibular first molars
B• permanent mandibular central incisors
C• permanent mandibular canines
D• permanent mandibular premolars
A
B. Permanent mandibular central incisors
16
Q
A mother brings her 1-year-old into your office the day after his first
birthday. She says the pediatrician said to have the first dental check-
up by this time. What primary teeth are you expecting to see when
the child opens?
A• mandibular incisors only
B•maxillary incisors only
C• mandibular and maxillary incisors
D• all incisors and maxillary canines
E• all incisors and mandibular canines
F• all anterior teeth
A
C. Mandibular and maxillary incisors
17
Q
Tommy, a pediatric patient of your , says he’s lost his top vampire tooth last week and the tooth fairy gave him a dollar for it. What is Tommy’s most likely age range when he lost his maxillary canine
tooth?
A• 6-7 years old
B• 7-8 years old
C• 10-12 years old
D•14-16 years old
A
C. 10-12 years old
18
Q
Which of the following are the cardinal rules regarding the eruption of
teeth?
Select all that apply.
A• boys’ teeth usually erupt before girls’ teeth of the same age
B• girls’ teeth usually erupt before boys’ teeth of the same age
C• maxillary teeth usually erupt before mandibular teeth
D• mandibular teeth usually erupt before maxillary teeth
E• the teeth of slender children usually erupt before the teeth of stocky
children
F• the teeth of stocky children usually erupt before the teeth of slender
children
A
B. Gurls teeth usually erupt before boys teeth of the same age
19
Q
The deciduous dental formula of man is:
A. 10x2-20
B• 10x2-20
C• 12x2-24
D• 16x2-32
E. None of the above
A
B.
20
Q
The permanent dental formula of man is:
A
C. 16 x 2 = 32
21
Q
A child in the ugly duckling stage of dental development belongs to
which of the following age groups?
A• 1 to 6 years
B• 6 to 12 years
C• 12 to 18 years
D• 18 years and above
A
B. 6 to 12 years
22
Q
A 15-month-old child walks into your office and begins to cry and
hold his mouth in pain. Which teeth have probably not been
traumatized, as they are not usually present at 15 months of age?
A• primary lateral incisors and canines
B• primary canines and first molars
C• primary canines and second molars
D• primary central and lateral incisors
E• primary first and second molars
A
C. Primary canines and second molars
23
Q
A pediatric patient of yours complains of severe pain on chewing. On
clinical exam, you see an eruption cyst in the place of the mandibular
second molar. What is the most likely age of this patient?
A• 8
B• 10
C• 12
D• 14
A
C. 12
24
Q
At 9 years of age how many primary teeth are present in the mouth?
A• 0
C• 4
D• 8
E• 12
F• 18
A
E. 12
25
A 1-year-old child is expected to have erupted which of the following
primary maxillary and mandibular teeth? Select all that apply.
A• central incisors
B• lateral incisors
C• canines
E• first molars
F• second molars
A. Central Incisor
B. Lateral incisors
26
The teeth that are present at the time of birth are known as
A• primary teeth
B• natal teeth
C• neonatal teeth
D• prenatal teeth
B. Natal teeth
27
A patient comes in with a chief complaint of, "My wife says I wake
her up at night with scraping noises from my mouth." On clinical
exam you will expect to find which of the following characteristics of
his occlusal contacts?
A• point-to-point
B• point-to-area
C• edge-to-edge
D• edge-to-area
E• area-to-area
E. Area-to-area
28
All posterior teeth have proximal contacts in the:
A• middle third
B• junction of the occlusal and middle third
C• occlusal third
D• cervical third
A. Middle third
29
heights of contour/contacts
Which teeth crowns have the facial height of contour located in or
near the cervical third?
A• anterior teeth (incisors and canines)
B• posterior teeth (premolars and molars)
C• only molars
D• all of the above
D. All of the above
30
Which of the following is true regarding proximal contact of teeth with their adjacent teeth in an arch?
A.helps prevent food from being trapped between the teeth
B• stabilizes the dental arch by holding teeth in positive contact with each
other
C• protects the interproximal gingival tissue from trauma during chewing
D• all of the above
D. All the above
31
Cervical line (or CEJ) contours are closely related to the attachment
of the gingiva at the neck of the tooth. When doing a crown prep, your
margin will slope with the contours of the cervical lines and gingival
attachments. On which surfaces will your greatest contour be found?
A• distal surfaces of anterior teeth
B• distal surfaces of posterior teeth
C• mesial surfaces of anterior teeth
D• mesial surfaces of posterior teeth
C. Mesial surface of anterior teeth
32
You are fabricating an interim bridge from 19 to 21. The contact areas
on the pontic when viewed from the occlusal view, should be
of the tooth midline buccolingually.
A• directly in line
B• slightly to the lingual
C• slightly to the facial
C. Slightly to the facial
33
The mesial contact area of a permanent maxillary lateral incisor is
usually located:
A• in the incisal third
B• in the middle third
C• at the junction of the incisal and middle thirds
C. At the junction of the incisal and middle thirds
34
From a facial view, mesial and distal contact areas of mandibular
central incisors are located:
A• in the middle third
B• at the junction of incisal and middle thirds
C• at the junction of cervical and middle thirds
D• cervical to the junction of incisal and middle thirds
E• incisal to the junction of incisal and middle thirds
E. Incisal to the junction of incisal and middle thirds
35
The contact area on the mesial surface of a mandibular canine is
located at the:
A• middle third
B• incisal third
C• cervical third
D• junction of the middle and cervical thirds
B. Incisal third
36
The lingual height of contour on a permanent mandibular second
molar is located:
A• in the middle third
B• in the cervical third
C• in the occlusal third
at the junction of the cervical and middle thirds
D• at the junction of the middle and occlusal thirds
A. In the middle third
37
Which of the following teeth has its mesial contact located within the
incisal or the occlusal one third?
A• maxillary canine
B• maxillary first molar
C• mandibular second premolar
D• mandibular central incisor
D. Mandibular central incisor
38
What is the location of facial height of contour of the anterior and
posterior teeth?
A• occlusal third
B•lingual third
C• middle third
D• cervical third
D. Cervical third
39
Concrescence is a type of fusion of the adjacent teeth through the
deposition of alveolar bone.
Hypercementosis involves excessive deposition of cementum around
the root which becomes continuous with the normal cementum of the
root.
A• both statements are true
B• both statements are false
C•the first statement is true, the second is false
D. the first statement is false, the second is true
D. The first statement is false , the second is true
40
All of the following are variations from normal anatomy in the oral
cavity EXCEPT one. Which one is the EXCEPTION?
A• mandibular tori
B• exostoses
C• plica fimbriata
D• linea alba
C.Plica fimbriata
41
Which of the following is the loss of tooth structure from non-
mechanical means?
A• attrition
B• abrasion
C• ankylosis
D• erosion
D. Erosion
42
Agents (chemicals) that are capable of causing developmental
abnormalities in utero are called teratogens. For each numbered
teratogen listed below, select the most closely linked effect from the
list provided,
1. Aspirin, valium, dilantin,
and cigarette smoke (hypoxia)
2. Cytomegalovirus, toxoplasma
3. Ethyl alcohol
4. Rubella virus
5. X-radiation
6. Vitamin D excess
A. Microcephaly
B. Central mid-face discrepancy
C. Premature suture closure
D. Cleft lip and palate
E. Microcephaly, hydrocephaly,
microphthalmia
F. Microphthalmia,
cataracts, deafness
1.D,
2.E
3.B
4.F
5.A
6 C
43
As you know, there are several kinds of teeth in the human mouth.
They all serve different functions. You are in an argument with your
friend, a law student, and you test his vocabulary. You call him a
, which simply means he has teeth with different
morphologies and functions.
A•polyphyodont
B• monophyodont
C • heterodont
D• diphyodont
C. Heterodoxy
44
/a terareacialot b an a oars to Mar saental ottino wit., missinianaxillario
have which of the following condition?
A• anodontia
B• oligodontia
C• hypodontia
D• hyperdontia
C. Hypodontia
45
A child has maxillary incisor protrusion, an anterior open bite,
crowded lower anteriors, and a high palatal vault. Which of the
following most likely caused this problem?
A• mouth breathing
B• thumb sucking
C• tongue thrusting
D• using a pacifier
E• nocturnal bruxism
B. Thumb sucking(or any other sucking habit)
46
A patient of yours has enamel hypocalcification. You would expect
quantity of enamel and would describe it As
A• less than normal; hard
B• less than normal; soft
C• normal; soft
D• normal; hard
E• more than normal; hard
F• more than normal; soft
C. Normal:soft
47
Which of the following teeth have the most variability in form?
A• mandibular first premolars
B• maxillary first molars
C• mandibular second molars
D• maxillary lateral incisors
E• maxillary second premolars
D. maxillary lateral incisors
48
A mental foramen would be found on x-ray closest to the root of
which tooth?
A• 19
B• 14
C• 29
E• 22
F•4
C. 29
49
Match the dimensions of an anterior tooth on the left with their respective
descriptions on the right.
1. Length of crown
A. From the crest of curvature on the
2. Length of root
mesial surface to the crest of curvature on
the distal surface
3. Mesiodistal diameter of crown
4. Mesiodistal diameter of crown at the cervix
5.Labiolingual diameter of crown
6. Labiolingual diameter of crown at the cervix
A. From the crest of curvature on the mesial surface to the crest of curvature on
the distal
B. From the junction of the crown and root on the labial surface to the junction of
the crown and root on the lingual surface
C. From the junction of the crown and root on the mesial surface to the junction
cervix
of the crown and root on the distal
surface
D. From the crest of curvature on the
labial surface to the crest of curvature on
the lingual surface
E. From the crest of curvature at the
cementoenamel junction to the incisal
edge
F. From the apex to the crest of curvature
at the crown cervix
1.E
2.F
3.A
4.C
5.D
6.B
50
51
52
In the natural dentition, centric occlusion is, in a majority of people,
to centric relation contact and on the average approximately
mm.
A• posterior; 2
B• anterior; 1
C• medial; 2
D•lateral; 1
B. Anterior 1
53
During sleep, the mandible is in its physiologic rest or postural
position. The contact of teeth is:
A• maximum
B• not present
C• premature
E •slight
B. Not present
54
Which of the following masticatory muscles is the principal positioner
of the mandible during elevation?
A• the temporalis muscle
B• the digastric muscle
C• the geniohyoid muscle
E• the lateral pterygoid muscle
A. The Temporalis muscle
55
A dental patient is complaining of unilateral jaw pain when chewing.
You notice that she only chews on her right side. When a mandibular
povemant,*at'himiahahig,performed, which condyle moves forward,
A• working condyle (right)
B• non-working condyle (left)
B. Non-working condyle(left)
56
Which of the following modalities can be used to treat symptoms of
malocclusion by changing the shape of the teeth? Select all that
apply.
A• occlusal equilibration
B• full-mouth rehabilitation
C• orthodontic treatment
E• all of the above
A. Occlusal equilibration
B. Full- mouth rehabilitation
57
During a right working side movement, the right side molar teeth may
contact along the buccal inclines of the maxillary buccal cusps and
the lingual inclines of the mandibular buccal cusps.
Mandibular protrusion will result in the mesiolingual cusp of the
maxillary first molar passing through the central groove toward the
distal marginal ridge of the mandibular molar.
A• both statements are true
B• both statements are false
C•the first statement is true, the second is false
D• the first statement is false, the second is true
D. The first statement is false , the second is true
58
Retrusive movement requires the condyles to move backward and
upward.
In protrusive movement, the condyles of the mandible have moved in
a downward and forward direction.
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D• the first statement is false, the second is true
A. Both statement are true
59
In regards to the picture below, the arrows indicate the path of
movement of mandibular teeth over the maxillary teeth on
the
side.
59
A• right lateral; working
B• left lateral; working
C• right lateral; non-working
D• left lateral; non-working
D. Left lateral: non-working
60
Anterior guidance is a result of:
A• horizontal and vertical overlap
B• vertical and posterior cusp height
C• horizontal overlap and posterior cusp height
D• intercondylar distance and free way space
E• intercondylar distance and postural vertical dimension
A. Horizontal and vertical overlap
61
In a patient with a left canine protection, the mesiolingual surface of
the maxillary right first molar contacts the distofacial surface of the
mandibular right first molar during a left lateral excursion. This
contact is:
normal
A• evidence of group function
B• a working side interference
C• a nonworking side interference
D• normal, and a nonworking side interference
C. a nonworking side interference
62
An endodontist is performing root canal therapy on a permanent
maxillary first molar. Since he is a very thorough endodontist, he
knows he should look for a fourth canal. Which root of a maxillary
first molar commonly has two root canals?A• the palatal root
B• the distobuccal root
C• the mesiobuccal root
D• none of the above
'C• the mesiobuccal root
63
All of the following teeth show bifurcation from the root trunk
EXCEPT one. Which one is the EXCEPTION?
A• maxillary first premolar
B• mandibular second molar
C• maxillary second premolar
D• all of the above
C• maxillary second premolar
64
molar teeth information
During a surgical extraction of the maxillary first molar, a rough oral
surgeon accidentally perforates the maxillary sinus. If he perforated
the sinus with one of the roots of the first molar, which root is the
most likely candidate, given that it is the largest, longest, and
strongest of the three roots?
A• mesiobuccal
B• distobuccal
C• palatal
'C• palatal
65
From a developmental viewpoint, all mandibular molars have
major cusps, whereas maxillary molars have only
major
cusps.
A• 6; 5
B• 5; 4
C• 4; 3
D• 3; 2
C• 4; 3
,
66
A fissured groove is most frequently found on the:
A• facial surface of maxillary molars
B• lingual surface of maxillary molars
C• facial surface of mandibular molars
D• lingual surface of mandibular molars
'B•lingual surface of maxillary molars
67
The photo below is a cervical cross section of the pulp cavity of a:
A• maxillary first molar
B• mandibular first molar
C• maxillary second molar
D• mandibular second molar
B.• mandibular first molar
68
A dental student is performing root canal therapy on an extracted
maxillary molar in her preclinical endodontics course. Her pre-
operative radiograph shows four canals (two canals in the MB root).
She should expect the shape of the floor of the pulp chamber in this
maxillary molar to be roughly
A• square
B• rhomboidal
C• triangular
D• circular
C• triangular
69
The photo below is a buccolingual section of the pulp cavity of a:
A• a mandibular right first molar
B• a mandibular right second molar
C• a mandibular right third molar
A• a mandibular right first molar
70
'From a mesial or distal aspect, all mandibular posterior teeth have a:
A• triangular outline
From a mesial or distal aspect, all mandibular posterior teeth have a:
• triangular outline
• rhomboidal outline
• trapezoidal outline
• square outline
• rectangular outline
C• trapezoidal outline
D• square outline
E'• rectangular outline
B• rhomboidal outline
71
The distolingual cusp on the permanent maxillary molars is also
called a:
A• cusp of Carabelli
B• talon cusp
C• dens evaginatus
D• trigone
B• talon cusp
72
A dentist is completing a disto-occlusal restoration on a permanent
maxillary first molar. He is carving the distal marginal ridge. He
makes sure to give it width for support and must round it to create an
embrasure. In order to get the correct height occlusocervically, he
should match the distal marginal ridge of the maxillary first molar to
the:
A• mesial marginal ridge of the maxillary second premolar
B• mesial marginal ridge of the mandibular first molar
C• mesial marginal ridge of the maxillary second molar
D•distal marginal ridge of the maxillary second premolar
C• mesial marginal ridge of the maxillary second molar
73
How many roots are visible from the buccal aspect of a maxillary first
molar?
A• one root
B• two roots
C• three roots
D• four roots
C. three roots
74
Fibers from the ventral ramus of C1 travel with the hypoglossal nerve
(CN XIl) to the geniohyoid and thyrohyoid.
Fibers from the ventral rami of C1-C3 combine to form the ansa
cervicalis, which gives off branches to the omohyoid, sternohyoid,
and sternothyroid.
A• both statements are true
B• both statements are false
C•the first statement is true, the second is false
D•the first statement is false, the second is true '
A.• both statements are true
75
Which of the following suprahyoid muscles are innervated by the
facial nerve?
Select all that apply.
75
A•mylohyoid muscle
B• anterior belly of digastric muscle
C• posterior belly of digastric muscle
D• stylohyoid muscle
E• geniohyoid muscle
C-D • posterior belly of digastric muscle
• stylohyoid muscle
76
There are two sets of lingual muscles: extrinsic and intrinsic. The
extrinsic muscles:
A.• alter the shape of the tongue
B• move the tongue as a whole
C• all originate from the mandible
D• are all innervated by the hypoglossal nerve
B• move the tongue as a whole
77
Which muscle presses the cheek against molar teeth, working with
the tongue to keep food between the occlusal surfaces and out of the
oral vestibule?
A• zygomaticus major
B• depressor labii inferioris
C• buccinator
D• levator anguli oris
C• buccinator
78
A new patient comes in with a history of malignant cancer. When the
patient opens, the mandible deviates to the left. You suspect a tumor
blocking nervous innervation to which muscle?
A• right medial pterygoid
B• left medial pterygoid
C• right lateral pterygoid
D• left lateral pterygoid
D• left lateral pterygoid
79
After seating a new crown on tooth #19 you need to check excursive
movements. You ask the patient to slide her jaw to the right to make
sure there are contacts on #19 during this movement. What muscle
does the patient use to move her jaw like this?
A• right medial pterygoid
B• left medial pterygoid
C• right lateral pterygoid
D• left lateral pterygoid
D• left lateral pterygoid
80
Retrusion (retruding the jaw) results from:
A• the bilateral contraction of the anterior (vertical) fibers of the temporalis
muscle
B• the bilateral contraction of the posterior (horizontal) fibers of the temporalis
muscle
C• the unilateral contraction of the anterior (vertical) fibers of the temporalis
muscle
D• the unilateral contraction of the posterior (horizontal) fibers of the
temporalismuscle
A• the bilateral contraction of the anterior (vertical) fibers of the temporalis
muscle
81
A 22-year-old female dental student comes into your dental practice
for a regular check-up. She states that she has never had any
problems with her teeth, and upon examination you notice that only
one pair of teeth seem to have contact during lateral movements of
the mandible. Which teeth should ideally provide the predominant
guidance through the full range of movement in lateral mandibular.
excursions?
A• premolars
B• first molars
C• incisors
D• Canine
D• canines
82
In an ideal intercuspal position, the mesiobuccal cusp of the
permanent maxillary first molar opposes the:
A• the distobuccal groove of the mandibular first molar
B• the buccal groove of the mandibular second molar
C• the mesiobuccal groove of the mandibular first molar
D• the developmental groove between the distobuccal and the distal cusps of
the mandibular first molar
C• the mesiobuccal groove of the mandibular first molar
83
Identify the following pictures of dental arch relationships as being
either Class I, Class Il Div I, Class Il Div. Il, or Class IlI.
84
An archaeologist consults a dentist about some findings he had on a
dig. The teeth the archeologist finds have four cusps - two of them
taller and pointed, two of them shorter, rounded, and dull. The dentist
tells the archaeologist that these teeth are similar to our human
molars. The broader, more rounded cusps are:
A• non-supporting and working
B• supporting and balancing
D• non-supporting and balancing i
C.• supporting and working
85
Which permanent teeth occlude with only one tooth in the opposite
jaw, assuming ideal relations exist?
A• maxillary canines
B• maxillary central incisors
C• mandibular central incisors
D• mandibular third molars
C• mandibular central incisors
86
In an ideal intercuspal position, the facial cusp tip of a maxillary
first premolar opposes the:
A• facial embrasure between the mandibular first and second premolars
B• facial embrasure between the mandibular second premolar and the
mandibular first molar
C• opposing central fossa
D• opposing mesial marginal ridge
A• facial embrasure between the mandibular first and second premolars
87
In the intercuspal position, where does the mesiolingual cusp of a
permanent maxillary first molar occlude?
A• the distal triangular fossa of first premolar
B• the distal triangular fossa of second premolar
C• the central fossa of the mandibular first molar
D• the distal marginal ridge of mandibular first molar
C• the central fossa of the mandibular first molar
88
In the intercuspal position, where does the distal cusp of a permanent
mandibular first molar occlude?
A• the distal triangular fossa of the maxillary second premolar
B• the distal fossa of the maxillary first molar
C• the central fossa of the maxillary second molar
D• the mesial marginal ridge of the maxillary first molar and distal marginal
ridge of the maxillary second premolar
B• the distal fossa of the maxillary first molar
89
Match the following diagrams on the left with the proper Angle's
classification on the right.
NOTE: JUST REVIEW THE ANGLES CLASSIFICATION
A. ClassI
B. Class Il
C. Class Ill
90
A dental student is finalizing the temporary crown he fabricated for
his patient. The patient's occlusion is in an ideal relationship, and the
crown has ideal centric contacts. The student has a bad habit of
forgetting about working and balancing contacts. He does remember
the rule that he should avoid laterotrusive contacts on the guiding
cusps on posterior teeth. Which two of the following are considered
to be guiding cusps?
A• maxillary lingual cusps
B• maxillary buccal cusps
C• mandibular lingual cusps
D• mandibular buccal cusps.
B• maxillary buccal cusps
C• mandibular lingual cusps
91
In an ideal intercuspal position, the mesiolingual cusp of a.
permanent mandibular molar opposes
A• the opposing central fossae
B• the lingual embrasure between their class counterpart and the tooth distal
to it
C• the opposing distal marginal ridge
-
D• the lingual embrasure between their class counterpart and the tooth
mesial to it
D• the lingual embrasure between their class counterpart and the tooth
mesial to it
92
The curve of Wilson is concave in the maxillary arch and convex in
the mandibular arch.
The maximum intercuspation position yields the smallest
measurement of vertical dimension,
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D• the first statement is false, the second is true
D• the first statement is false, the second is true
93
A patient presents to the dentist for examination and bites into centric
occlusion. The permanent maxillary canine is found to be mesial to
the mandibular canine. This type of occlusion is classified as:
A• class I
B• class Il
C• class Ill
D• class IV
B• class Il
94
Which of the following are the areas of centric contacts (centric
stops). Select all that apply.
A• marginal ridges
B• central fossae
C• height of cusp contour
A• marginal ridges
B• central fossae
C• height of cusp contour
95
The basic principles for occlusal adjustment include all of the
following EXCEPT one. Which one is the EXCEPTION?
A• the maximum distribution of occlusal stresses in centric relation
B• the forces of occlusion should be borne as much as possible by the long
axis of the teeth
C• when there is surface-to-surface contact of flat cusps, it should be
changed to a point-to-surface contact
D• once centric occlusion is established, never take the teeth out of centric
occlusion
E• when a slide from CR to ICP is natural, it should never be modified
E• when a slide from CR to ICP is natural, it should never be modified
96
The determinant factors of occlusion include all of the following
EXCEPT one. Which one is the EXCEPTION
A• the temporomandibular joint
B• the masticatory muscles
C• the tongue and buccal mucosa position
D• the biomechanics of the temporomandibular joint
E• the dentition and the occlusal table
C• the tongue and buccal mucosa position
97
The centric relation (CR) is the most untrained, retruded anatomic
and functional position of the heads of the condyles or the mandible
in the
of the temporomandibular joints. This is a relationship of
the
of the upper and lower jaws
tooth contact. The
presence or absence of teeth, or the type of occlusion or
malocclusion,
factors.
A• mandibular fossae/bones/independent of/are not
B• mandibular foramen/teeth/dependent on/are
C• mandibular fossae/bones/dependent on/are
D• mandibular fossae/teeth/dependent on/are
E• mandibular foramen/bones/independent of/are not
A• mandibular fossae/bones/independent of/are not
98
Anterior guidance (anterior coupling) is the guidance provided by the
anterior teeth when the mandible goes into a lateral or protrusive
movement.
If anterior guidance can be accomplished, the least amount of force
will be placed on the posterior teeth during lateral and protrusive
movements.
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D•the first statement is false, the second is true
A• both statements are true
99
A patient's mother comes in to complain that her child's upper front
teeth rest in front of his lower lip. You explain to her that this is called
A• overjet
B• overbite
C• underjet
D• open bite
A• overjet
100
Generally, the deeper the curve of Spee, the more difficult it is to
make and adjust interocclusal appliances that are used in the
treatment of bruxism.
Increasing the curve of Spee can reduce the vertical overlap of the
teeth. '
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D• the first statement is false, the second is true
C• the first statement is true, the second is false
101
The mandible functions as a:
A• class I lever
B• class Il lever
C• class Ill lever
C• class Ill lever
102
Which of the following types of oral mucosa are keratinized under
normal conditions?
Select all that apply.
A• vermillion border of the lips
B• hard palate
C• gingiva
D• buccal mucosa
E• dorsal surface of the tongue
A• vermillion border of the lips
B• hard palate
C• gingiva
E• dorsal surface of the tongue
103
The principal fibers of the periodontal ligament are arranged in four
groups.
The molecular configuration of collagen fibers in the periodontal
ligament provides them with a tensile strength greater than that of
steel.
A• both statements are true
B• both statements are false
C•the first statement is true, the second is false
D• the first statement is false, the second is true
D• the first statement is false, the second is true
104
The gingival fibers are arranged in five groups. Which of the following
is NOT one of those groups?
A• circular group
B• dentogingival group
C• apical group
D• transseptal group
E• dentoperiosteal group
F• alveologingival group
C• apical group
105
What is the depth of the gingival sulcus in an ideal or absolutely
normal (germ-free) condition?
A• 2 mm to 4 mm
B• 6 mm to 8 mm
C• 0 mm or near to 0 mm
D• 1.5 mm to 1.8 mm
C• 0 mm or near to 0 mm
106
Which of the following characteristics are observed in a diseased
gingiva?
A• rolled-in margins
B• soft and spongy consistency throughout the gingiva
C• bleeding upon probing
D• all of the above.
D• all of the above
107
The average width of the periodontal ligament is approximately 20
mm.
The width of the periodontal ligament decreases with increasing age.
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D•the first statement is false, the second is true
D•the first statement is false, the second is true
108
All of the following statements are true regarding epithelial cell rests
of Malassez EXCEPT one. Which one is the EXCEPTION?
A•they are epithelial remnants of the Hertwig's epithelial root sheath
B• they are present as isolated islands or clusters throughout the cementum
C• they play a role in periodontal regeneration
D• they can be the source of dental cysts
B• they are present as isolated islands or clusters throughout the cementum
109
Which of the following is NOT an age-related change in the
periodontium?
A• decreased keratinization of the gingival epithelium
B• decrease in number of fibroblasts and epithelial cell rests in the periodontal
ligament
C• decrease in the width of cementum
D• coarser and denser gingival connective tissues
C• decrease in the width of cementum
110
The attachment apparatus is composed of all of the following
EXCEPT one. Which one is the EXCEPTION?
A• periodontal ligament
B• cementum
C• alveolar process of the maxillae and mandible
D• gingiva
D• gingiva
111
The principal fibers of the periodontal ligament are composed mainly
of collagen type I.
The amount of collagen in a tissue can be determined by its glycine
content.
A• both statements are true
B• both statements are false
D•the first statement is false, the second is true
C•the first statement is true, the second is false
112
The ground substance in the periodontal ligament consists of
proteoglycans.
Gingival tissues show increased scarring after surgical procedures.
A• the first statement is true, the second is false
B• the second statement is true, the first is false
C• both statements are true
D• both statements are false
A• the first statement is true, the second is false
113
The narrowest band of attached gingiva is found:
A• on the lingual surfaces of maxillary incisors and the facial surfaces of
maxillary first molars
B• on the facial surfaces of mandibular second premolars and the lingual
surface of canines
C• on the facial surfaces of the mandibular canine and first premolar and the
lingual surfaces adjacent to the mandibular incisors and canines
D• none of the above
C• on the facial surfaces of the mandibular canine and first premolar and the
lingual surfaces adjacent to the mandibular incisors and canines
114
Which tooth is most likely to be unnecessarily endodontically treated
by a novice dentist who sees a radiolucency on the radiograph?
A• mandibular canine
B• mandibular second premolar
C• mandibular first molar
D• maxillary first premolar
B• mandibular second premolar
115
Which tooth has a mesial marginal ridge that is distinctly shorter in
length and less prominent in height than the distal marginal ridge?
A• maxillary second premolar
C• mandibular second premolar
D• maxillary first premolar
B• mandibular first premolar
116
On mandibular premolars, the lingual cusps are much smaller than
the buccal cusps.
On maxillary premolars, the buccal cusps are smaller than the lingual
cusps.
A• both statements are true
B• both statements are false
C•the first statement is true, the second is false
D• the first statement is false, the second is true
C•the first statement is true, the second is false
117
The pulp cavity shown below is the:
A• maxillary right first premolar
B• maxillary left second premolar
C• mandibular right first premolar
D• mandibular left second premolar
A• maxillary right first premolar
118
Which premolar is the only one that has a mesial buccal cusp ridge
that is longer than its distal buccal cusp ridge?
A• mandibular first premolar
B• mandibular second premolar
C• maxillary first premolar
D• maxillary second premolar
A• mandibular first premolar
119
The largest of all the premolars are the___
and the smallest are the_____
A• maxillary first, mandibular first
B• maxillary first, ma'ndibular second
C• maxillary second, mandibular first
D• maxillary second, mandibular second
A• maxillary first, mandibular first
120
A hockey player comes into your office with both of his maxillary
right premolars in hand. Which of the following characteristics would
you NOT use to distinguish the first from the second maxillary
premolar?
A• number of roots
B• symmetry (one is more symmetrical than the other)
C• mesial to distal cusp ridge ratio
D• presence of mesio-lingual developmental groove
E• central groove size and supplemental groove number
D• presence of mesio-lingual developmental groove
121
The dental lamina is a horseshoe-shaped band of epithelial tissue that
arises from the___and is surrounded by mesenchymal cells.
A• basement membrane
B• basal lamina
C• ectomesenchyme
D• oral epithelium
D• oral epithelium
122
Enamel matrix is an ectodermal product because ameloblasts are
derived from the inner enamel epithelium of the enamel organ, which
was originally derived from the ectodermal layer of the embryo.
Enamel matrix is first formed in the incisal/occlusal portion of the
future crown near the forming DEJ.
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D•the first statement is false, the second is true
A• both statements are true
123
Mature enamel is by weight:
A• 74% mineralized or inorganic material, 20% organic material, and 6%
water
B• 80% mineralized or inorganic material, 18% organic material, and 2%
water
C• 90% mineralized or inorganic material, 9% organic material, and 1% water
D• 96% mineralized or inorganic material, 1% organic material, and 3% water
D• 96% mineralized or inorganic material, 1% organic material, and 3% water
124
Which of the following are partially calcified vertical defects in the
enamel resembling cracks or fractures that traverse the entire length
of the crown from the surface to the DEJ.
A• enamel tufts
B• enamel spindles
C• enamel rods
D• enamel lamellae
125
The mesenchymal cells in the dental papilla adjacent to the inner
enamel epithelium differentiate into:
A• ameloblasts
B• odontoblasts
C• cementoblasts
D• fibroblasts '
B• odontoblasts
126
Which structure is the central core and fills the bulk of the enamel
organ?
A• outer enamel epithelium
B• inner enamel epithelium
C• stratum intermedium
D• stellate reticulum
127
A patient comes into your dental clinic holding a bag of ice to the side
of his face and a sliver of ice tucked between his cheek and teeth. He
says the cold relieves the pain in his tooth. This is almost indicative
of partial necrosis of the structure which innervates the whole tooth.
This structure is a connective tissue that develops from the:
A• enamel organ
B• dental papilla
C• epithelial rests of Malassez
C• dental sac
B• dental papilla
128
Which of the following statements concerning dentin are true? Select
all that apply.
A• it is hard, elastic, 70% inorganic, 20% organic, and 10% water
B• the main cell type is the odontoblast, which is derived from
ectomesenchyme
C• the inorganic component consists of mainly calcium hydroxyapatite
D• it is less mineralized than cementum or bone but more mineralized than
enamel
A• it is hard, elastic, 70% inorganic, 20% organic, and 10% water
.
B• the main cell type is the odontoblast, which is derived from
ectomesenchyme
C• the inorganic component consists of mainly calcium hydroxyapatite
129
A 3-year-old boy is being rushed by his mother to finish up his ice-
cream. He is unwilling to bite into it because it hurts his teeth. The
reason the teeth of children are more sensitive to thermal changes
than those of an adult is that:
A• newly erupted teeth have more dentin than older teeth
B• newly erupted teeth have larger dental pulps
C• newly erupted teeth have more differentiated mesenchymal cells
D• newly erupted teeth have less ground substance
B• newly erupted teeth have larger dental pulps
130
Gemination and fusion occur during which stage of tooth
development?
A• initiation
B• bud stage
C• cap stage
D• bell stage
E• appositional stage
F• maturation stage
C• cap stage
131
A 14-year-old boy comes into the dental office for a prophylaxis. A
diet evaluation reveals that he consumes 3-4 cans of soda a day and
eats a box of fruit snacks every week. Radiographs show multiple
incipient interproximal carious lesions and one cavitated carious
lesion in his premolar. The cavitated lesion in the premolar is
beginning to encroach on the pulpal tissue. Reparative dentin is
usually formed in response to injury. The primary function of which
tissue is responsible for forming this reparative dentin?
A• enamel
B•Hertwig's epithelial root sheath
C• dental pulp
D• cementum
C• dental pulp
132
The dental tissue which most closely mimics bone is:
A• enamel
B• dentin
C• dental pulp
D• cementum
D• cementum
133
Which of the following statements concerning cementum are true?
Select all that apply.
A• it is formed by cementoblasts from the . periodontal ligament
B• the organic portion is primarily composed of collagen and protein
C• cellular cementum occurs more frequently on the coronal two-thirds of the
root
D• it is avascular
A• it is formed by cementoblasts from the . periodontal ligament
B• the organic portion is primarily composed of collagen and protein
D• it is avascular
134
The junction between primary and secondary dentin is characterized
by a sharp change in the direction of dentinal tubules.
Tertiary dentin is the dentin formed in a tooth before the completion
of the apical foramen of the root.
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D• the first statement is false, the second is true
C•the first statement is true, the second is false
135
Which of the following is formed inside the walls of the dentinal
tubules?
135
A• tertiary dentin
B• mantle dentin
C• peritubular dentin
D• intertubular dentin
C• peritubular dentin
136
After the inner enamel epithelium differentiates into preameloblasts,
dentinogenesis is initiated by the odontoblasts.
In a cross section, enamel tufts and lamellae are seen as a series of
lines extending from the dentinoenamel junction toward the tooth
surface, while in a longitudinal section, they appear as concentric
rings.
A• both statements are true
B• both statements are false
C•the first statement is true, the second is false
E•the first statement is false, the second is true
C•the first statement is true, the second is false
137
The application of excessive heat to a tooth results in pain because:.
A• excessive stimulation of a heat receptor always results in pain
B• heat receptors in the pulp have a low threshold to pain
C• all stimuli to the pulp results in a pain sensation
D• blood vessels of the pulp expand and cause strangulation of the tissue
C• all stimuli to the pulp results in a pain sensation
138
For each numbered term on the left, select the most closely linked
description from the list on the right.
1. sulcus
2. fossa
3. pit
4. fissure
A. an irregular depression or
concavity on the occlusal surfaces of
posterior teeth and on the lingual
surface of incisors
B. V-shaped depression on the
occlusal surface of posterior teeth
C. Crack-like fault, caused by incomplete fusion of enamel during tooth development
D. formed at the depth of fossa where
two or more grooves meet
139
When two teeth in the same arch are in contact, their curvatures
adjacent to the contact areas form spillway spaces called
embrasures.
The design of contact areas, interproximal spaces, and embrasures
varies with the form and alignment of the various teeth; each section
of the two arches shows similarity of form.
A• both statements are true
B• both statements are false
C•the first statement is true, the second is false
D• the first statement is false, the second is true
A• both statements are true
140
When viewed from the facial, all posterior teeth have proximal
contacts in the middle third.
The more posterior teeth (the molars) have contacts higher in the
middle third than the premolars.
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D• the first statement is false, the second is true
C• the first statement is true, the second is false
141
A 16-year-old patient is referred to the orthodontist's office needing
work to fix her malocclusion. Before the patient's first appointment,
the orthodontist reviews the clinical photographs of the patient and
notices mamelons. Mamelons are unusual in older patients and
would indicate that the patient most likely has which of the following
malocclusions?
A• posterior crossbite
B• posterior open bite
C• anterior open bite
D• edge-to-edge class Ill dental occlusion
C• anterior open bite
142
Which of the following are true concerning developmental grooves?
Select all that apply.
A• they are formed during tooth development
B• they usually separate the primary parts of the crown or root
C• they are important escape ways for cusps during lateral and protrusive jaw
motions and for food particles during mastication
D• they are broad, deep, linear depressions
A• they are formed during tooth development
B• they usually separate the primary parts of the crown or root
C• they are important escape ways for cusps during lateral and protrusive jaw
motions and for food particles during mastication
143
In many older individuals, gingival recession leads to an unaesthetic
problem affectionately known as
"black triangle disease." This is
caused by the loss of gingival tissue in the interdental space. The
interdental space is the:
A• occlusal (incisal) border at which the gingiva meets the tooth
B• portion of the gingiva that fills the interproximal space
C• collar of tissue that is not attached to the tooth or alveolar bone
D• band or zone of gray to light or coral pink keratinized masticatory mucosa
that is firmly bound down to the underlying bone
DENTAL ANATOMY & OCCLUSION
B• portion of the gingiva that fills the interproximal space
144
Which of the following types of ridges is unique to permanent
maxillary molars?
A• a labial ridge
B• a marginal ridge
C• an oblique ridge
D• a transverse ridge
C• an oblique ridge
145
Transverse ridges are very common on which of the following?
Select all that apply.
A• mandibular premolars
B• mandibular molars
C• maxillary premolars
D• maxillary molars
B• mandibular molars
C• maxillary premolars
146
A 7-year-old patient comes into your pediatric practice for a routine
prophylaxis. When conducting an intra-oral exam you comment to
him that you notice that he has just eaten something sticky like
gummy worms or fruit snacks. The chewing surface of posterior
teeth, and the likely location of sticky food deposits in this patient, is
referred to as the:
A• clinical crown
B• incisal edge
C• occlusal surface
D• anatomic crown
C• occlusal surface
147
All anterior teeth show traces of:
A• one lobe
B• two lobes
C• three lobes
D• four lobes
D• four lobes
148
A young patient comes to the clinic complaining that he gets too
much food stuck behind his front tooth when he bites. On
examination, the dentist notes an anomalous, claw-shaped cusp
which projects from the cingulum of tooth #9. This small elevation of
enamel found on the crown portion of a tooth would be classified as
a:
A• tubercle
B• mamelon
C• ridge
D• developmental depression
A• tubercle
149
How many line angles are there in an anterior tooth?
A• four
B• five
C• SiX
D• eight
C• SiX
150
Any linear elevation on the surface of a tooth is called:
A• an incline
B• a prominence
C• a ridge
D• a tuberosity
C• a ridge
151
Which tooth in the mouth has the greatest axial inclination relative to
the occlusal plane?
A• maxillary canine
B• maxillary lateral incisor
C• maxillary central incisor
'C • maxillary central incisor
152
Which teeth have the most variable crown shape of all permanent
teeth?
A• maxillary lateral incisors
B• mandibular lateral incisors
C• maxillary third molars
D'• mandibular second premolars '
C• maxillary third molars
153
Which of the following statements concerning the mandibular lateral
incisor are true?
Select all that apply. '
A• the mandibular lateral incisor is a little larger in all dimensions than the
mandibular central incisor
B• the crown of the mandibular lateral incisor is not as bilaterally symmetrical
as the mandibular central incisor
C• the cingulum is directly in the center of the lingual surface
D• the single root is usually straight, slightly longer and wider than that of a
mandibular central
A• the mandibular lateral incisor is a little larger in all dimensions than the
mandibular central incisor
B• the crown of the mandibular lateral incisor is not as bilaterally symmetrical
as the mandibular central incisor.
D• the single root is usually straight, slightly longer and wider than that of a
mandibular central
154
Which tooth is considered the "cornerstone" of the permanent
dentition?
A• maxillary canine
B• maxillary second molar
C• mandibular canine
D• mandibular first molar
D• mandibular first molar
155
A patient walks into your office holding three crowns in her hand and
claims that they fell out during a car accident. You notice that one of
the crowns has a mesiolingual developmental groove. This is a dead
giveaway that this tooth is a:
A• maxillary first premolar
B• mandibular first premolar
C• maxillary second premolar
D'• mandibular second premolar
B• mandibular first premolar
156
You are sifting through extracted teeth to practice a root canal. Since
you will rarely do a third molar root canal in practice, you throw those
out right away. What is the most reliable distinguishing feature of the
mandibular third molar?
A• fused and compressed root system
B• short, bulbous outline of the crown
C• marginal ridge forming a smooth circle
D• marked distal inclination of the r oot trunk
E• great morphologic resemblance to the first molar
D• marked distal inclination of the r oot trunk
157
The most distinguishable difference between the maxillary first and
second permanent premolars is:
A.• the size of the crown
B• the number of roots
C.• the curvature of the facial surface
D• the length of the lingual cusp
B• the number of roots
158
The maxillary first molar is the largest tooth in the maxillary arch and
also has the largest crown in the permanent dentition.
All maxillary molars are wider buccolingually than mesiodistally; in
comparison, the mandibular molars are wider mesiodistally..
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D• the first statement is false, the second is true
A• both statements are true
159
The are the only teeth in the permanent dentition with a vertical and centrally placed labial ridge.
A• central incisors
B• lateral incisors
C,• canines
D• premolars
C,• canines
160
A linguogingival groove may be present on the root( possibly on the crown) A maxillary lateral incisor has a single conical root that is relatively
smooth and straight but may curve slightly to the distal.
A• both statements are true
B• both statements are false
C•the first statement is true, the second is false
D•the first statement is false, the second is true
A• both statements are true
161
When filling a Class Il amalgam you are having trouble fitting the
matrix band perfectly and keep getting an overhang in the cervical
area. What surfaces are you preparing?
A• mesio-occlusal of a maxillary first premolar
B• disto-occlusal of a maxillary first premolar
C• mesio-occlusal of a maxillary second premolar
D• disto-Occlusal of a maxillary second premolar
E• mesio-occlusal of a mandibular first premolar
F• disto-occlusal of a mandibular first premolar
A• mesio-occlusal of a maxillary first premolar
162
A mandibular canine is wider labiolingually and mesiodistally than a
maxillary canine.
The crown of the mandibular canine can be as long or even longer
than that of a maxillary canine.
A• both statements are true
B• both statements are false
C.•the first statement is true, the second is false
D•the first statement is false, the second is true
D•the first statement is false, the second is true
163
Which tooth has two forms: the three-cusp type and the two-cusp
type?
A• maxillary first premolar
B• mandibular second premolar
C• mandibular first premolar
D• maxillary second premolar
B• mandibular second premolar
164
The outline of the crown of a maxillary second molar is narrower
mesiodistally than that of a maxillary first molar but is about the same
width buccolingually.
Two crown outline types are possible on the maxillary second molar
when viewed from the occlusal: rhomboidal and heart-shaped.
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D• the first statement is false, the second is true
A• both statements are true
165
You buy a batch of pre-fabricated temporary crown restorations for
your office for the first time. Your assistant drops the entire box on
Teh Prom night wih Ye the et mixed up. The hardest tooth to distinguish

A• maxillary second molar
B.• maxillary first molar
C• mandibular first molar
D• mandibular second molar '
D• mandibular second molar '
166
The mandibular central incisors are the smallest and simplest teeth of
the permanent dentition.
The mandibular central has a simple root, which is very narrow
labiolingually and wide mesiodistally.
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D• the first statement is false, the second is true
C• the first statement is true, the second is false
167
A permanent maxillary central incisor usually has how many
mamelons and developmental lobes?
A• two mamelons and two developmental lobes
B• two mamelons and three developmental lobes
C• three mamelons and two developmental lobes
D• three mamelons and four developmental lobes
D• three mamelons and four developmental lobes
168
Which permanent tooth is shown below?
A•the permanent maxillary right first molar
B• the permanent maxillary right first premolar
C•the permanent mandibular right first premolar
B•the permanent maxillary right first molar
169
The picture below is:
A•the mesial view of a maxillary right first molar
B• the distal view of a maxillary right first molar
C• the mesial view of a maxillary right second molar
D• the distal view of a maxillary right third molar
A•the mesial view of a maxillary right first molar
170
Which permanent tooth is shown below?
A• the permanent maxillary right first molar
B• the permanent maxillary right second molar
C•the permanent mandibular right first molar
D• the permanent mandibular right second molar
B• the permanent maxillary right second molar
171
Which permanent tooth is shown below?•
A•the permanent mandibular right first premolar
B• the permanent mandibular right second premolar
C• the permanent mandibular right first molar
D• the permanent mandibular right second molar
D• the permanent mandibular right second molar
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182
184
185
186
187
188
189
A patient comes into your dental office complaining of chewing
difficulties. When you ask him to protrude his mandible, the mandible
markedly deviates to the right. Which muscle, which inserts fibers
into the capsule and articular disc of the TMJ, is most likely
damaged?
A• right medial pterygoid muscle
B• left medial pterygoid muscle
C• right lateral pterygoid muscle
D•left lateral pterygoid muscle
C• right lateral pterygoid muscle
190
A patient with constant, unexplained headaches is referred to a TMJ
specialist by his physician. In order to check for tenderness, the
specialist must palpate the joint. What is the best way to palpate the
posterior aspect of the mandibular condyle?
A• intraorally
B•externally over the posterior surface of the condyle with the mouth open
C• through the external auditory meatus
D• any of the above
B•externally over the posterior surface of the condyle with the mouth open
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A 56-year-old man comes into the ER with his mouth wide open. His
wife explains that he can't close his mouth. The resident on-call
quickly diagnoses this as a bilateral dislocation of the TMJ and treats
it promptly with reduction. Dislocation of the TMJ is almost always:
A• posteriorly and occurs while sleeping
B• anteriorly and occurs while laughing or yawning
C• anteriorly and occurs while chewing . food
D• posteriorly and occurs while laughing or yawning
B• anteriorly and occurs while laughing or yawning
192
Which component of the TMJ has the most vasculature and
innervation?
A• articular fossa
B• anterior band of the articular disc
C• posterior band of the articular disc
D• articular eminence
E• retrodiscal tissue
E• retrodiscal tissue
193
A relatively unsuccessful treatment option for individuals suffering
from osteoarthritis is to inject or implant hyaline cartilage into areas
of articular cartilage degeneration. If osteoarthritis were to involve the
TMJ, this treatment modality would definitely be unsuccessful
because the articular surfaces of the TMJ are covered with:
A• dense fibrous connective tissue
B• periosteum
C• elastic cartilage
D• periosteum and elastic cartilage
A• dense fibrous connective tissue
194
Reciprocal clicking is always a sign of damage to the ligaments that
fasten the disc in place.
A disc cannot click if the posterior and collateral ligaments are intact.
A• both statements are true
B• both statements are false
C• the first statement is true, the second is false
D• the first statement is false, the second is true
A• both statements are true
195
A patient with temporomandibular disorder comes to the dental office
for treatment. He has bilateral "clicking" of the condyles upon
opening and tenderness on palpation of the joint. An MRI shows
damaged collateral ligaments. The most common direction in which
the articula r disc in the TMJ will be displaced in this patient is:
A• laterally
B• medially
C•posteriorly
D• anteromedially
D• anteromedially
196
The TMJ is a(n):
A• arthrodial joint
B• ginglymus joint
C• ginglymoarthrodial joint
C• ginglymoarthrodial joint
197
All of the following structures make up the articulating parts of each
temporomandibular joint EXCEPT one. Which one is the EXCEPTION?
A• mandibular condyle
B• articular fossa and articular eminence
C• retrodiscal tissue
D• articular disc (meniscus)
C• retrodiscal tissue
198
Which of the following structures secretes the fluid which lubricates
the TMJ?
A• retrodiscal tissue
B• internal synovial layer of the fibrous capsule
C• outer fibrous layer of the fibrous capsule
D• articular disc
B• internal synovial layer of the fibrous capsule
199
Translatory movements take place in which compartment of the
TMJ?
A• upper (mandibular fossa-articular disc) compartment
B• lower (condyle-articular disc) compartment
C• both the upper and lower compartments
A• upper (mandibular fossa-articular disc) compartment
200
All of the following statements are true EXCEPT one. Which one is the
EXCEPTION?
A• the crowns of the primary anterior teeth are wider mesiodistally and shorter
incisocervically than their permanent counterparts
B• the crowns of the primary molars are shorter and more narrow
mesiodistally at the cervical third as compared to the permanent molars
C• the pupal horns are lower in primary molars, especially the distal horns,
and the pulp chambers are proportionately smaller
D• the roots of the primary anterior teeth taper more rapidly than do those of
the permanent anteriors
E• the roots of the primary molars are longer and more slender than those of
the permanent molars
F• the enamel ends abruptly at the cervical line on primary teeth, rather than
becoming thinner, which occurs on permanent teeth
C• the pupal horns are lower in primary molars, especially the distal horns,
and the pulp chambers are proportionately smaller
201
Stainless steel crowns are often used in pediatric dentistry. Also
common in pediatric dentistry are kids throwing temper tantrums.
One day a 4-year-old patient throws a tantrum and knocks over your
case of stainless steel crowns. When picking out the primary
mandibular first molars you remember which of the following
statements?
A• they resemble the permanent mandibular first premolar
B• they resemble the permanent mandibular first molar
C•they resemble the permanent maxillary second molar
E• they resemble the primary mandibular second molar
F• none of the above; their anatomy is unlike any other tooth in the mouth
(primary or permanent)
F• none of the above; their anatomy is unlike any other tooth in the mouth
202
A frantic mother calls you on the phone asking what to do about her
child's first tooth. You want to impress her. Before she can say it, you
tell her what tooth it is. It is a:
A• primary mandibular central incisor
B• primary mandibular first molar
C• primary maxillary central incisor
D• primary maxillary first molar
You got that right, and now you really impress her and tell her how
old her child is. She is about:
E• 4-½ months old
F• 6-½ months old
G• 10-½ months old
H• 1 year old
A• primary mandibular central incisor
F• 6-½ months old
203
A 10-½-year-old patient comes into your office. You are not sure
whether his maxillary canines are permanent or primary. Which of
the following statements will help you determine which they are?
A• the cusp on the primary maxillary canine is much shorter than the cusp on
the permanent maxillary canine
B• the mesial cusp ridge on the primary maxillary canine is shorter than the
distal cusp ridge; this is the opposite of all other canines
C• the cusp on the primary maxillary canine is much longer and sharper than
the cusp on the permanent maxillary canine
D• the primary maxillary canine is much narrower and longer than the
permanent maxillary canine
C• the cusp on the primary maxillary canine is much longer and sharper than
the cusp on the permanent maxillary canine
204
A patient with chronic TMJ inflammation is being treated by a dental
TMJ expert. To supplement his examination, the dentist wants to
image the soft tissues of this patient's TMJ. Which of the following is
the best imaging modality for identifying the position of the articular
disc in the temporomandibular joint?
A• panoramic radiograph
B• magnetic resonance imaging (MRI)
C• computerized axial tomography (CAT Scan)
D•lateral transcranial radiograph
B• magnetic resonance imaging (MRI)
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