2010 Released Qs And Ans29

Front 1

Hyperkeratosis, acanthosis, dysplasia,
increased mitosis, intact basal cell layer
and chronic inflammatory cells are
histologic features that may be found in
A. squamous cell carcinoma.
B. carcinoma in situ.
C. papillofibroma.
D. endothelioma.

Back 1

B. carcinoma in situ.

Front 2

Histological sections of a lesion removed
from the apex of a carious tooth show
immature fibrous tissue and chronic
inflammatory cells. The most likely
diagnosis is a/an
A. acute periapical abscess.
B. odontogenic fibroma.
C. radicular cyst.
D. periapical granuloma.
E. central fibroma.

Back 2

D. periapical granuloma.

Front 3

Radiolucent lesions of the jaws can be
seen in
1. hyperparathyroidism.
2. multiple myeloma.
3. fibrous dysplasia.
4. hyperthyroidism.

Back 3

1. hyperparathyroidism.
2. multiple myeloma.
3. fibrous dysplasia.

Front 4

An excisional biopsy of a nodule 5mm in
diameter on the lateral border of the
tongue was diagnosed as a fibroma. This
patient should have
A. hemisection of the tongue.
B. radiotherapy to site of biopsy.
C. no additional therapy.
D. re-excision with wider margins.
E. radium implantation around biopsy
site.

Back 4

C. no additional therapy.

Front 5

Lancinating paroxysmal pain in the
posterior part of the tongue, tonsil,
nasopharynx and pharynx is most likely
diagnostic of
A. Ménière's disease.
B. trigeminal neuralgia.
C. sphenopalatine neuralgia.
D. glossopharyngeal neuralgia.
E. psychotic glosso pyrosis.

Back 5

D. glossopharyngeal neuralgia.

Front 6

The greatest single factor in reducing
radiation exposure in dentistry is
A. higher kVp.
B. proper filtration.
C. high speed film.
D. collimation of the X-ray beam.

Back 6

D. collimation of the X-ray beam.

Front 7

Which of the following sites for squamous
cell carcinoma has the best prognosis?
A. Lower lip.
B. Retromolar area.
C. Gingiva.
D. Buccal mucosa.
E. Hard palate.

Back 7

A. Lower lip.

Front 8

In hyperparathyroidism, typical features of
bone involvement are
1. subperiosteal erosion of the
phalanges.
2. osteopetrosis.
3. pathological fractures.
4. renal stones.

Back 8

1. subperiosteal erosion of the
phalanges.
3. pathological fractures.
4. renal stones.

Front 9

A decrease of which of the following is
indicative of hypoparathyroidism?
A. Serum phosphorus.
B. Serum calcium.
C. Thyroid activity.
D. Serum alkaline phosphatase.

Back 9

B. Serum calcium.

Front 10

Erythroblastosis fetalis may be a cause of
A. supernumerary incisors.
B. pigmented teeth.
C. peg lateral incisors.
D. Fordyce's granules.
E. blue sclerae.

Back 10

B. pigmented teeth.

Front 11

A patient who uses nitroglycerine has
A. rheumatic heart disease.
B. asthma.
C. coronary artery disease.
D. high blood pressure.
E. cardiac arrhythmia.

Back 11

C. coronary artery disease.

Front 12

When a patient experiences continuous
pain in the maxillary premolar and molar
areas and there is no evidence of dental
infection, the most likely diagnosis is
A. trigeminal neuralgia.
B. acute maxillary sinusitis.
C. impacted maxillary canine.
D. impacted maxillary third molar.
E. glossopharyngeal neuralgia.

Back 12

B. acute maxillary sinusitis.

Front 13

For an adult patient, the recommended
time interval between bitewing
radiographic examination for the detection
of dental caries is
A. 6 months.
B. 12 months.
C. 24 months.
D. dependent upon caries risk.
E. None of the above.

Back 13

D. dependent upon caries risk.

Front 14

The benign neoplasm that originates from
squamous epithelium is called a/an
A. adenoma.
B. choriocarcinoma.
C. chondroma.
D. lipoma.
E. papilloma.

Back 14

E. papilloma.

Front 15

Percussion of a tooth is used to evaluate
1. ankylosis.
2. pain.
3. mobility.
4. vitality.

Back 15

1. ankylosis.
2. pain.
3. mobility.

Front 16

The oral examination of the edentulous
patient should include digital palpation
because
1. the arch form can be more accurately
evaluated.
2. the thickness of the mucosa can better
be evaluated.
3. undercut areas may be hard to
visualize.
4. spicules under the mucosa may be
overlooked.
5. the ridge relationship will be better
understood.

Back 16

2. the thickness of the mucosa can better
be evaluated.
3. undercut areas may be hard to
visualize.
4. spicules under the mucosa may be
overlooked.

Front 17

The apical region of a non-vital tooth with
a deep carious lesion may radiographically
show
1. widening of the periodontal space.
2. loss of lamina dura.
3. a circumscribed radiolucency.
4. calcification of the periodontal
membrane.

Back 17

1. widening of the periodontal space.
2. loss of lamina dura.
3. a circumscribed radiolucency.

Front 18

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

Back 18

2. secondary radiation.
5. radiation received by patient.

Front 19

Which of the following combinations of
milliamperage and kilovoltage will give
X-radiation with the maximum
penetration?
A. 10kVp - 65ma
B. 85kVp - 5ma
C. 90kVp - 10ma
D. 65kVp - 15ma
E. 75kVp - 40ma

Back 19

C. 90kVp - 10ma

Front 20

Intensifying screens are used when
exposing extra-oral radiographic films to
A. improve detail.
B. decrease exposure time.
C. decrease scatter radiation.
D. increase the quantity of X-rays
necessary to produce a certain
photographic effect on silver.
E. None of the above.

Back 20

B. decrease exposure time.

Front 21

Selection of the appropriate kilovoltage
for dental films is influenced by
A. line voltage fluctuation.
B. diameter of the primary beam of
radiation.
C. type of timer.
D. tissue density.
E. filter thickness.

Back 21

D. tissue density.

Front 22

The fixing solution serves the purpose of
1. carrying on development.
2. hardening the emulsion.
3. removing unexposed silver salts.

Back 22

2. hardening the emulsion.
3. removing unexposed silver salts.

Front 23

A radiolucent area in a radiograph occurs
as a result of
1. decreased density of tissue.
2. increased density of tissue.
3. more radiation affecting the silver
halide crystals.
4. increased exposure time.

Back 23

1. decreased density of tissue.
3. more radiation affecting the silver
halide crystals.

Front 24

In the early stage, a periradicular abscess
can be differentiated from a lateral
periodontal abscess by
A. pain.
B. type of exudate.
C. tenderness to percussion.
D. response of pulp to electrical
stimulation.
E. radiographic examination.

Back 24

D. response of pulp to electrical
stimulation.

Front 25

In the presence of an acute bacterial
infection, laboratory tests will show an
increase in
A. polymorphonuclear leukocytes.
B. plasma cells.
C. lymphocytes.
D. monocytes.
E. eosinophils.

Back 25

A. polymorphonuclear leukocytes.

Front 26

A patient presents with apparent paralysis
of one side of the face which appeared the
day before. What is the most likely
diagnosis?
A. Glossodynia.
B. Bell's palsy.
C. Myasthenia gravis.
D. Trigeminal neuralgia.

Back 26

B. Bell's palsy.

Front 27

Sickle cell anemia is
A. a genetic disease.
B. caused by exposure to radiation.
C. a viral infection.
D. a drug reaction.
E. an auto-immune disease.

Back 27

A. a genetic disease.

Front 28

An ameloblastoma is most frequently
found in
A. the anterior region of the maxilla.
B. the mandible, near the junction of the
body and the ramus.
C. the posterior region of the maxilla.
D. in the anterior region of the mandible
near the midline.

Back 28

B. the mandible, near the junction of the
body and the ramus.

Front 29

Which of the following bone lesions of the
mandible is/are malignant?
1. Osteosarcoma.
2. Osteochondroma.
3. Ewing's tumor.
4. Fibrous dysplasia.

Back 29

1. Osteosarcoma.
3. Ewing's tumor.

Front 30

A common clinical sign of occlusal
traumatism is
A. tooth mobility.
B. pocket formation.
C. gingival recession.
D. temporomandibular joint pain -
dysfunction syndrome.
E. pulp calcifications.

Back 30

A. tooth mobility.

Front 31

Which gingival manifestation(s) would be
expected in a patient with a blood
dyscrasia?
1. Enlargement.
2. Bleeding.
3. Ulceration.
4. Atrophy.

Back 31

1. Enlargement.
2. Bleeding.
3. Ulceration.

Front 32

Mucoceles are most commonly found in
the
A. upper lip.
B. lower lip.
C. tongue.
D. buccal mucosa.
E. soft palate.

Back 32

B. lower lip.

Front 33

The main purpose of collimation of an xray
beam is to
A. permit the use of lower kilovoltage
during exposure.
B. filter out useless short rays.
C. permit use of the long cone
technique.
D. reduce the diameter of the primary
beam.
E. reduce exposure time.

Back 33

D. reduce the diameter of the primary
beam.

Front 34

"Dens in dente" (dens invaginatus) is
associated with
A. supernumerary teeth.
B. dentinogenesis imperfecta.
C. osteogenesis imperfecta.
D. anterior teeth.
E. amelogenesis imperfecta.

Back 34

D. anterior teeth.

Front 35

Multiple supernumerary teeth are most
commonly found in
A. cherubism.
B. cretinism.
C. hypothyroidism.
D. cleidocranial dysplasia.
E. Down's syndrome.

Back 35

D. cleidocranial dysplasia.

Front 36

A draining fistula of short duration related
to a tooth undergoing endodontic therapy
requires
A. irrigation of canals.
B. antibiotics.
C. surgical excision.
D. no special treatment.

Back 36

D. no special treatment.

Front 37

Among the following, which may be
associated with root resorption?
1. Excessive orthodontic forces.
2. Periapical granuloma.
3. Cementoma.
4. Hypercementosis.
5. Traumatic injury.

Back 37

1. Excessive orthodontic forces.
2. Periapical granuloma.
5. Traumatic injury.

Front 38

A radicular cyst
A. enlarges rapidly.
B. infiltrates bone.
C. contains fluid.
D. cannot cause cortical bone
expansion.
E. is associated with a vital tooth.

Back 38

C. contains fluid.

Front 39

Which of the following is NOT a sign or
symptom of the myofascial pain
dysfunction syndrome?
A. Pain.
B. Muscle tenderness.
C. Limitation of jaw motion.
D. "Clicking" or "popping" noise in the
joints.
E. Radiographic changes of the joint.

Back 39

E. Radiographic changes of the joint.

Front 40

In radiography, a parallel technique or
right angle technique as opposed to a
bisecting angle technique will result in
1. less gonadal radiation.
2. greater entrance dosage.
3. less dimensional distortion.
4. a more heterogenous beam of X-rays.

Back 40

1. less gonadal radiation.
3. less dimensional distortion.

Front 41

A 12 year old boy has a history of severe
sore throat followed by migratory
arthralgia and swollen joints of the
extremities. This history is suggestive of
A. gout.
B. osteoarthritis.
C. Still's disease.
D. rheumatic fever.
E. rheumatoid arthritis.

Back 41

D. rheumatic fever.

Front 42

The most logical explanation for causing
swelling beneath the eye caused by an
abscessed maxillary canine is that the
A. lymphatics drain superiorly in this
region.
B. bone is less porous superior to the
root apex.
C. infection has passed into the angular
vein which has no valves.
D. the root apex lies superior to the
attachment of the caninus and levator
labii superioris muscles.

Back 42

D. the root apex lies superior to the
attachment of the caninus and levator
labii superioris muscles.

Front 43

The finding of “acid-fast” microorganisms
in sputum suggests the presence of
A. Mycobacterium tuberculosis.
B. Diplococcus pneumoniae.
C. Streptococcus pyogenes.
D. Neisseria gonorrhoeae.

Back 43

A. Mycobacterium tuberculosis.

Front 44

Excessive formation of scar tissue beyond
the wound margin is called
A. a fibroma.
B. a keloid.
C. a fibro-epithelial polyp.
D. epithelial hyperplasia.

Back 44

B. a keloid.

Front 45

A clinical finding common to alcoholism,
poorly-controlled diabetes mellitus,
uremia and liver disease is
A. smooth tongue.
B. increased blood pressure.
C. coated tongue.
D. labial fissures.
E. halitosis.

Back 45

E. halitosis.

Front 46

In radiography, minimum magnification
and maximum definition are achieved by
A. minimum OFD (object-film distance)
and minimum FFD (focal-film
distance).
B. minimum OFD (object-film distance)
and maximum FFD (focal-film
distance).
C. maximum OFD (object -film
distance) and maximum FFD (focalfilm
distance).
D. maximum OFD (object-film
distance) and minimum FFD (focalfilm
distance).

Back 46

B. minimum OFD (object-film distance)
and maximum FFD (focal-film
distance).

Front 47

An acute periapical abscess must be
associated with
1. pain.
2. sensitivity to percussion.
3. non-vital tooth.
4. periapical radiolucency.

Back 47

1. pain.
2. sensitivity to percussion.
3. non-vital tooth.

Front 48

Granulation tissue is composed of
A. plasma cells and giant cells.
B. fibroblasts, capillaries and chronic
inflammatory cells.
C. fibroblasts and eosinophils.
D. epithelioid cells and tissue
phagocytes.

Back 48

B. fibroblasts, capillaries and chronic
inflammatory cells.

Front 49

Intermittent painful swelling in the
submandibular region that increases at
mealtime is indicative of
A. a ranula.
B. a blockage of Wharton's duct.
C. Ludwig's angina.
D. a blockage of Stensen's duct.
E. an epidemic parotitis.

Back 49

B. a blockage of Wharton's duct.

Front 50

A syphilitic gumma is most commonly
found on the
A. lip.
B. tongue.
C. palate.
D. buccal mucosa.
E. gingiva.

Back 50

C. palate.