2010 Released Qs And Ans5

Front 1

Which of the following radiographic
findings are attributable to trauma from
occlusion?
1. Widening of the periodontal ligament
space.
2. Vertical destruction of the interdental
septum.
3. Widening of the lamina dura.
4. Narrowing in width of the periodontal
ligament space.

Back 1

1. Widening of the periodontal ligament
space.
2. Vertical destruction of the interdental
septum.
3. Widening of the lamina dura.

Front 2

Surgery of irradiated bone is complicated
by the fact that the
A. original neoplasm may invade the
area of surgery.
B. bone becomes brittle.
C. blood vessels become sclerosed
compromising normal healing.
D. All of the above.
E. None of the above.

Back 2

D. All of the above.

Front 3

An end result of ionizing radiation used to
treat oral malignancies is
A. deformity of the jaws.
B. reduced vascularity of the jaws.
C. increased vascularity of the jaws.
D. increased brittleness of the jaws.
E. none of the above.

Back 3

B. reduced vascularity of the jaws.

Front 4

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 4

D. tissue density.

Front 5

An osteoma is
A. radiopaque.
B. radiolucent.
C. either radiopaque or radiolucent.
D. radiolucent surrounded by a
radiopaque line

Back 5

A. radiopaque.

Front 6

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

Back 6

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

Front 7

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 7

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

Front 8

In dental radiography, an increase in the
kilovoltage is accompanied by
A. an increase in the quantity of
radiation.
B. greater penetrability.
C. the ability to decrease exposure time.
D. All of the above.

Back 8

B. greater penetrability.

Front 9

The radiographs of dentinal dysplasia
Type I show
A. obliteration of pulp chambers and
root canals.
B. small underdeveloped roots.
C. involvement of primary as well as
permanent teeth.
D. (A) and (B)
E. All of the above

Back 9

E. All of the above

Front 10

A patient complains of acute pain 24 hours
after the insertion of a restoration in a
tooth with no pre-existing periapical
pathology. The tooth is vital and tender to
percussion. The radiograph will show
A. an apical radiolucency.
B. acute osteitis.
C. root resorption.
D. condensing osteitis.
E. none of the above.

Back 10

E. none of the above.

Front 11

Radiographically, a benign bone neoplasm
can be differentiated from a malignant one
because in the benign lesion
1. the margins are irregular and fade into
the surrounding bone.
2. the cortex remains intact.
3. the margins are defined and
demarcated.
4. there can be perforation of the
periosteum.

Back 11

2. the cortex remains intact.
3. the margins are defined and
demarcated.

Front 12

Radiographically, the opening of the
incisive canal may be misdiagnosed as a
1. branchial cyst.
2. nasopalatine cyst.
3. nasolabial cyst.
4. radicular cyst.

Back 12

2. nasopalatine cyst
4. radicular cyst.

Front 13

A periapical radiolucency can represent a
1. periapical granuloma.
2. radicular cyst.
3. metastatic carcinoma.
4. mental foramen.

Back 13

. All of the above.

Front 14

Ankylosis is commonly
A. associated with a non-vital pulp.
B. the result of a root fracture.
C. associated with a root penetrating
cavity.
D. resulting in a submerged tooth, out of
occlusion.
E. found in permanent teeth.

Back 14

D. resulting in a submerged tooth, out of
occlusion

Front 15

In the early stage, a periapical 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 15

D. response of pulp to electrical
stimulation.

Front 16

A periapical radiolucency associated with
a vital maxillary central incisor can
represent a
1. nasopalatine cyst.
2. dentigerous cyst.
3. foramen of the incisive canal.
4. periapical granuloma.

Back 16

1. nasopalatine cyst.
3. foramen of the incisive canal.

Front 17

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 17

A. polymorphonuclear leukocytes.

Front 18

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 18

B. Bell's palsy.

Front 19

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 19

A. a genetic disease.

Front 20

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 20

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

Front 21

The clinical appearance and texture of an
early carcinoma of the floor of the mouth
could be
A. red and soft.
B. white and rough.
C. ulcerated and indurated.
D. All of the above.
E. None of the above.

Back 21

D. All of the above.

Front 22

Signs and symptoms of diabetic patients
include
1. polyuria.
2. polydipsia.
3. glycosuria.
4. dysphagia.

Back 22

1. polyuria.
2. polydipsia.
3. glycosuria.

Front 23

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 23

A. tooth mobility.

Front 24

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

Back 24

1. Enlargement.
2. Bleeding.
3. Ulceration

Front 25

Which one of the following is the most
common tumour of the salivary glands?
A. Adenocystic carcinoma.
B. Adenoma.
C. Pleomorphic adenoma.
D. Muco-epidermoid carcinoma.

Back 25

C. Pleomorphic adenoma.

Front 26

Which of the following landmarks are
recognizable in periapical radiographs of
the mandible?
1. External oblique ridge.
2. Coronoid process.
3. Mylohyoid ridge.
4. Mental foramen.
5. Incisive canal.

Back 26

1. External oblique ridge.
3. Mylohyoid ridge.
4. Mental foramen.

Front 27

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

Back 27

B. lower lip.

Front 28

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

Back 28

D. anterior teeth.

Front 29

Geographic tongue is characterized by
A. congenital deformity of tissue.
B. atrophic filiform papillae.
C. association with scrotal tongue.
D. predominance in elderly patients.

Back 29

B. atrophic filiform papillae.

Front 30

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

Back 30

D. cleidocranial dysplasia.

Front 31

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 31

D. no special treatment.

Front 32

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 32

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

Front 33

The radicular or root-end cyst occurs as a
result of
A. trauma.
B. pulpal necrosis.
C. hyperparathyroidism.
D. poorly calcified bone.

Back 33

B. pulpal necrosis.

Front 34

Which of the following is/are associated
with xerostomia?
1. Atropine administration.
2. Acute anxiety state.
3. Mikulicz's disease.
4. Sjögren's syndrome.

Back 34

E. All of the above.

Front 35

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 35

E. Radiographic changes of the joint.

Front 36

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 36

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

Front 37

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 37

D. rheumatic fever.

Front 38

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 38

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

Front 39

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 39

A. Mycobacterium tuberculosis.

Front 40

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 40

B. a keloid.

Front 41

A well circumscribed 3mm radiolucent
lesion is present in the apical region of the
mandibular second premolar. The lesion
may be
1. a periapical granuloma.
2. a periapical cyst.
3. a chronic periapical abscess.
4. the mental foramen

Back 41

E. All of the above.

Front 42

The earliest radiographic sign of occlusal
trauma is
A. hypercementosis.
B. root resorption.
C. alteration of the lamina dura.
D. widening of the periodontal ligament
space.
E. ankylosis.

Back 42

D. widening of the periodontal ligament
space.

Front 43

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 43

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

Front 44

Which lesion(s) may appear
radiographically as multilocular
radiolucencies?
1. Ameloblastoma.
2. Odontogenic myxoma.
3. Primordial cyst.
4. Keratocyst.

Back 44

E. All of the above.

Front 45

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

Back 45

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

Front 46

Which of the following conditions are
associated with AIDS?
1. Acute marginal periodontitis.
2. Hairy leukoplakia.
3. Candidiasis.
4. Geographic tongue.

Back 46

1. Acute marginal periodontitis.
2. Hairy leukoplakia.
3. Candidiasis.

Front 47

White lesions of the oral mucosa may be
produced by
1. thickening of the epithelium.
2. increase of the keratinized layers.
3. coagulation by heat or chemicals.
4. mycotic infection.

Back 47

E. All of the above.

Front 48

Aphthous stomatitis
1. is considered to be an autoimmune
condition.
2. is more frequent in men than in
women.
3. may be related to the menstrual cycle.
4. is rarely seen clinically with vesicle
formation.
5. is of three to four days duration.

Back 48

1. is considered to be an autoimmune
condition.
3. may be related to the menstrual cycle.
4. is rarely seen clinically with vesicle
formation.

Front 49

The most common site of intra-oral
squamous cell carcinoma is the
A. palate.
B. floor of the mouth.
C. gingiva.
D. buccal mucosa.

Back 49

B. floor of the mouth.

Front 50

A biopsy specimen should
1. not be distorted by instruments.
2. be fixed within 30 minutes after
removal.
3. be representative of the lesion.
4. be obtained using electrosurgery

Back 50

1. not be distorted by instruments.
2. be fixed within 30 minutes after
removal.
3. be representative of the lesion