2010 Released Qs And Ans38

Front 1

A smooth, elevated, red patch devoid of
filiform papillae, located in the midline of
the dorsum of the tongue immediately
anterior to the circumvallate papillae is
indicative of
A. benign migratory glossitis.
B. median rhomboid glossitis.
C. a granular cell tumor.
D. iron deficiency anemia.
E. a fibroma.

Back 1

B. median rhomboid glossitis.

Front 2

When probing a healthy gingival sulcus
with a 20g force, the tip of the periodontal
probe is most likely located
A. coronal to the junctional epithelium.
B. at the level of the junctional
epithelium.
C. at the level of the supra crestal fibers.
D. apical to the junctional epithelium.

Back 2

B. at the level of the junctional
epithelium.

Front 3

A 20 year old female patient is suspected
of having bulimia. Which of the
following signs will help confirm the
diagnosis?
1. Enamel erosion of maxillary anterior
teeth.
2. Enlargement of the thyroid gland.
3. Calluses on the dorsum of the
fingers.
4. Bulky clothing to disguise weight
loss.

Back 3

E. All of the above.

Front 4

Upon stimulation of salivary flow, which
gland is the main source of salivary
volume?
A. Submandibular.
B. Submaxillary.
C. Sublingual.
D. Parotid.

Back 4

D. Parotid.

Front 5

Which systemic disease does NOT
especially predispose to periodontitis?
1. Cyclic neutropenia.
2. Trisomy 21 (Down’s Syndrome).
3. Diabetes mellitus.
4. Aquired immunodeficiency
syndrome.

Back 5

4. Aquired immunodeficiency
syndrome.

Front 6

Crowding of the lower incisors following
orthodontic alignment
1. can be prevented by removal of the
third molars.
2. can be prevented by wearing retainers
until mandibular growth is complete.
3. can be prevented by a post-alignment
circumferential supracrestal
fiberotomy.
4. cannot be predicted from
characteristics of the original
malocclusion.

Back 6

4. cannot be predicted from
characteristics of the original
malocclusion.

Front 7

A 25 year old female in her first trimester
of pregnancy presents with an acute dental
infection. Which of the following is
CONTRAINDICATED for this patient?
A. Prescription of a radiograph.
B. Prescription of penicillin V.
C. Extraction using 2% xylocaine with
1:100,000 epinephrine.
D. Acetylsalicylic acid for pain
management.

Back 7

D. Acetylsalicylic acid for pain
management.

Front 8

With two rescuers performing
cardiopulmonary resuscitation (CPR) on
an adult patient, how many external chest
compressions are given per minute?
A. 40
B. 60
C. 80
D. 100

Back 8

D. 100

Front 9

Which of the following factors
influence(s) the development of root
caries?
1. A diet high in refined carbohydrates.
2. Periodontal disease.
3. The anatomy of the cemento-enamel
junction.
4. Xerostomia.

Back 9

E. All of the above.

Front 10

The average annual dose of ionizing
radiation that a patient receives from
dental radiographs is
A. greater than the average amount
received from natural sources.
B. about the same as the average
amount received from medical
sources.
C. about the same as the average
amount received from cosmic
radiation.
D. low when compared to the average
total amount of radiation received..

Back 10

D. low when compared to the average
total amount of radiation received..

Front 11

Which procedure(s) require(s) antibiotic
prophylaxis in a patient susceptible to
bacterial endocarditis?
1. Impressions for partial dentures.
2. Suture removal.
3. Mandibular block anesthetic
injection.
4. Periodontal surgery.

Back 11

4. Periodontal surgery.

Front 12

Which of the following make the elderly
difficult to treat?
1. The presence of multiple diseases.
2. Prolonged recovery times.
3. Various psychological factors.
4. Under-reporting of symptoms.

Back 12

E. All of the above.

Front 13

A patient presents with hypodontia,
conical teeth, fine, scanty, fair hair, and an
intolerance to hot weather. The most
likely diagnosis is
A. achondroplasia.
B. malignant hyperthermia.
C. ectodermal dysplasia.
D. cystic fibrosis.

Back 13

C. ectodermal dysplasia.

Front 14

In a 4-year old the most appropriate
treatment for a chronically infected, nonrestorable
first primary molar is to
A. extract it and place a space
maintainer.
B. observe it until it exfoliates.
C. extract it.
D. observe it until it becomes
symptomatic.

Back 14

A. extract it and place a space
maintainer.

Front 15

Which of the following is a possible cause
for a low density radiograph (light film)?
A. Cold developer.
B. Over exposure.
C. Improper safety light.
D. Excessive developing time.

Back 15

A. Cold developer

Front 16

Which of the following is necessary for
collagen formation?
A. Vitamin A.
B. Vitamin C.
C. Vitamin D.
D. Vitamin E.
E. Vitamin K.

Back 16

B. Vitamin C.

Front 17

Overlapping contacts on a bitewing
radiograph result from
1. malalignment of teeth.
2. incorrect vertical angulation of the xray
beam.
3. incorrect horizontal angulation of the
x-ray beam.
4. patient movement during the
exposure.

Back 17

1. malalignment of teeth.
3. incorrect horizontal angulation of the
x-ray beam.

Front 18

The washing of hands must be performed
before putting on and after removing
gloves because it
1. reduces the number of skin bacteria
which multiply and cause irritation.
2. completely eliminates skin bacteria.
3. minimizes the transient bacteria
which could contaminate hands
through small pinholes.
4. allows gloves to slide on easier when
the hands are moist.

Back 18

1. reduces the number of skin bacteria
which multiply and cause irritation.
3. minimizes the transient bacteria
which could contaminate hands
through small pinholes.

Front 19

A recommended method for disinfecting
alginate impressions is to immerse the
impression for 10 minutes in
A. a complex phenolic.
B. 2% glutaraldehyde.
C. 10% ethyl alcohol.
D. a 1:10 dilution of sodium
hypochlorite.

Back 19

D. a 1:10 dilution of sodium
hypochlorite.

Front 20

Gingival enlargement may result from the
administration of
1. nifedipine.
2. cyclosporine.
3. phenytoin sodium.
4. prednisolone.

Back 20

1. nifedipine.
2. cyclosporine.
3. phenytoin sodium.

Front 21

Pontic design for a porcelain fused to
metal bridge should
1. provide for a rigid restoration.
2. allow for complete coverage of the
metal by the porcelain.
3. place the porcelain metal joint away
from the soft tissues.
4. control thermal conductivity.

Back 21

1. provide for a rigid restoration.
3. place the porcelain metal joint away
from the soft tissues.

Front 22

When designing a removable partial
denture, changing the tilt of the cast on the
surveyor alters the
1. path of insertion of the planned
removable partial denture.
2. the position of the survey line on the
cast.
3. the undercut and non-undercut areas.
4. the direction of forces applied to the
partial denture.

Back 22

1. path of insertion of the planned
removable partial denture.
2. the position of the survey line on the
cast.
3. the undercut and non-undercut areas

Front 23

The best way to protect the abutments of a
Class I removable partial denture from the
negative effects of the additional load
applied to them is by
A. splinting abutments with adjacent
teeth.
B. keeping a light occlusion on the
distal extensions.
C. placing distal rests on distal
abutments.
D. using cast clasps on distal abutments.
E. regular relining of the distal
extensions.

Back 23

E. regular relining of the distal
extensions.

Front 24

Which of the following can increase the
chances of successful osseointegration of a
dental implant?
1. An atraumatic surgical approach.
2. The availability of dense cancellous
bone.
3. A good initial stability of the
implant.
4. Immediate loading of the implant.

Back 24

1. An atraumatic surgical approach.
2. The availability of dense cancellous
bone.
3. A good initial stability of the
implant.

Front 25

The custom tray used in making a final
complete denture impression must
A. extend to the bottom of the vestibule.
B. create adequate space for the
impression material.
C. have a horizontal handle.
D. be stored in water until ready for use.

Back 25

B. create adequate space for the
impression material.

Front 26

Healthy attached gingiva
A. has no basal cell layer.
B. is closely bound to underlying
periosteum.
C. contains elastic fibers.
D. has no rete pegs.

Back 26

B. is closely bound to underlying
periosteum.

Front 27

Difficulty in seating a stainless steel crown
following the preparation of a primary
molar is most likely a result of
A. inadequate lingual reduction.
B. “ledging” at the gingival area of the
preparation.
C. supraeruption of the opposing molar.
D. impingement of gingival tissue under
the crown margin.

Back 27

B. “ledging” at the gingival area of the
preparation

Front 28

The angle SNA can be used to evaluate the
A. maxillary protrusion.
B. overbite.
C. upper incisor inclination.
D. facial height.
E. mandibular angle.

Back 28

A. maxillary protrusion.

Front 29

Cephalosporin antibiotics
1. may be cross-allergenic with
penicillin.
2. have a narrower spectrum than
penicillin.
3. have a mechanism of action similar
to that of penicillin.
4. may cause cholestatic hepatitis.

Back 29

1. may be cross-allergenic with
penicillin.
3. have a mechanism of action similar
to that of penicillin.

Front 30

A survey of the master cast shows that the
3.5 and 3.7 abutments for a fixed partial
denture have different paths of insertion
with respect to 3.7. A semi-precision
attachment is chosen rather than preparing
the teeth again. Where should the male
part of the attachment ideally be located?
A. Distal of the 3.5 retainer.
B. Distal of the 3.6 pontic.
C. Mesial of the 3.7 retainer.
D. Mesial of the 3.6 pontic.

Back 30

D. Mesial of the 3.6 pontic.

Front 31

What is the earliest age that the diagnosis
of a congenitally missing mandibular
second bicuspid can be confirmed?
A. 2 years.
B. 4 years.
C. 6 years.
D. 8 years.

Back 31

B. 4 years.

Front 32

A Bolton relationship has determined a
 maxillary “12” excess of 3.5mm
 maxillary “6” excess of 3.0mm
What effect(s) could this Bolton
relationship have on a Class I
malocclusion?
1. Deeper overbite.
2. Maxillary crowding.
3. Reduced overjet.
4. Increased overjet.

Back 32

2. Maxillary crowding.
4. Increased overjet.

Front 33

Which patient would NOT be predisposed
to liver toxicity following a dose of
1,000mg of acetaminophen?
A. An adult with liver cirrhosis.
B. A chronic alcoholic.
C. A diabetic.
D. A 15kg, 4 year old child.

Back 33

C. A diabetic.

Front 34

A preparation for a porcelain fused to
metal crown with a porcelain butt joint
margin should have a
1. 90o cavosurface margin.
2. subgingival finish line.
3. 1.2mm shoulder.
4. 90o axiogingival angle.

Back 34

1. 90o cavosurface margin.
3. 1.2mm shoulder.

Front 35

In the insulin-dependant diabetic patient,
hypoglycemia is characterized by
1. mental confusion.
2. tachycardia.
3. sweating.
4. nausea.

Back 35

E. All of the above.

Front 36

A patient with pain, fever and unilateral
parotid swelling following a general
anesthetic most likely has
A. Mumps.
B. sialolithiasis.
C. acute bacterial sialadenitis.
D. Sjögren’s syndrome.
E. sarcoidosis.

Back 36

C. acute bacterial sialadenitis.

Front 37

Soft tissue pockets CANNOT be reduced
by
A. occlusal adjustment.
B. scaling and root planing
(debridement).
C. open flap curettage.
D. guided tissue regeneration.

Back 37

A. occlusal adjustment.

Front 38

White lesions of the oral mucosa can
result from
1. thickened epithelium.
2. increased keratin.
3. chemical burn.
4. mycotic infection.

Back 38

E. All of the above.

Front 39

Differential diagnosis for short term pain
and swelling of the gingiva associated
with an endodontically treated tooth
should include
1. periodontal abscess.
2. periapical abscess.
3. vertical root fracture.
4. internal root resorption.

Back 39

1. periodontal abscess.
2. periapical abscess.
3. vertical root fracture.

Front 40

Epinephrine is used in the management of
an acute anaphylactic reaction (Type I
allergic reaction) because it
1. decreases heart rate.
2. relaxes bronchial muscles.
3. decreases systolic blood pressure.
4. produces vasoconstriction in many
vascular beds.

Back 40

2. relaxes bronchial muscles.
4. produces vasoconstriction in many
vascular beds.

Front 41

After pulpotomy of a permanent central
incisor in an 8 year old child, the most
important clinical criterion/criteria of
success is/are
1. completion of root formation.
2. internal resorption.
3. dentin bridge formation.
4. formation of pulp stones.

Back 41

1. completion of root formation.
3. dentin bridge formation.

Front 42

Proper collimation of the useful beam for
the film size and target-film distance will
reduce
1. image definition.
2. secondary radiation.
3. radiographic contrast.
4. radiation received by patient.

Back 42

2. secondary radiation.
4. radiation received by patient.

Front 43

In x-ray equipment, kilovoltage controls
1. contrast.
2. speed of electrons.
3. penetrating power of radiation.
4. amount of radiation produced.

Back 43

1. contrast.
2. speed of electrons.
3. penetrating power of radiation.

Front 44

The amount of radiation to a patient can be
reduced by
1. using a high speed film.
2. using an aluminum filter.
3. increasing target-film distance.
4. using low kVp.

Back 44

1. using a high speed film.
2. using an aluminum filter.
3. increasing target-film distance.

Front 45

Temporomandibular joint disc
morphology is best seen by using
A. arthrography.
B. computed tomography.
C. magnetic resonance imaging.
D. corrected tomography.

Back 45

C. magnetic resonance imaging

Front 46

In composite resin restorations, glass
ionomer cements can be used as a base
because they are
A. sedative to a hyperemic pulp.
B. neutral in colour.
C. biocompatible.
D. compatible with the expansion of
composite resins.

Back 46

C. biocompatible.

Front 47

For an acid-etched Class III composite
resin, the cavosurface margin of the cavity
can be bevelled to
A. eliminate the need for internal
retention.
B. improve convenience form.
C. aid in finishing.
D. increase the surface area for etching.

Back 47

D. increase the surface area for etching.

Front 48

Condensing osteitis in the periapical
region is indicative of a/an
A. acute inflammation of the pulp.
B. pulpal abscess.
C. chronic inflammation of the pulp.
D. early apical abscess formation.
E. None of the above.

Back 48

C. chronic inflammation of the pulp.

Front 49

Root planing is used in the treatment of
pockets which are
1. edematous.
2. fibrotic.
3. below the mucogingival junction.
4. infrabony

Back 49

1. edematous.
2. fibrotic.
4. infrabony

Front 50

A patient complains of the discolouration
of an upper central incisor.
Radiographically, the pulp chamber and
the root canal space are obliterated and the
periodontal ligament space appears
normal. The most appropriate treatment
would be to
A. perform root canal treatment and non
vital bleaching.
B. perform root canal treatment and
fabricate a post retained porcelain
fused to metal crown.
C. perform root canal treatment and
fabricate a porcelain veneer.
D. fabricate a porcelain fused to metal
crown.
E. fabricate a porcelain veneer

Back 50

E. fabricate a porcelain veneer