2010 Released Qs And Ans10

Front 1

The Green Vermillion Index measures
A. periodontal disease.
B. oral hygiene.
C. bone level.
D. periodontal pockets.

Back 1

B. oral hygiene.

Front 2

After tooth eruption, which of the
following materials gradually decreases in
concentration from the enamel surface ?
A. Carbonate.
B. Protein.
C. Fluoride.
D. Calcium.
E. Chloride.

Back 2

A. Carbonate.

Front 3

Which of the following foods is the most
cariogenic?
A. Cheese.
B. Dark chocolate.
C. Jam.
D. Toffee.

Back 3

D. Toffee.

Front 4

The fluoride ion
1. is excreted rapidly by the kidney.
2. passes the placental barrier.
3. is deposited in teeth.
4. is deposited in bone.

Back 4

1. is excreted rapidly by the kidney.
2. passes the placental barrier.
3. is deposited in teeth.
4. is deposited in bone.

Front 5

In chewing, maximum contact between
teeth occurs in the position of
A. habitual occlusion.
B. lateral excursion on the non-working
side.
C. protrusive excursion.
D. All of the above

Back 5

A. habitual occlusion.

Front 6

Epidemiology of disease is best described
as the
A. data obtained from sickness surveys.
B. usual low level of disease normally
found within a population.
C. control of disease.
D. study of disease patterns in a
population.

Back 6

D. study of disease patterns in a
population.

Front 7

Which of the following oral diseases are
largely preventable through lifestyle
adjustments?
1. Dental caries.
2. Periodontal disease.
3. Oral malignancies.
4. Cleft lip and palate.

Back 7

1. Dental caries.
2. Periodontal disease.
3. Oral malignancies.

Front 8

With the development of gingivitis, the
sulcus becomes predominantly populated
by
A. gram-positive organisms.
B. gram-negative organisms.
C. diplococcal organisms.
D. spirochetes.

Back 8

B. gram-negative organisms.

Front 9

The colour of normal gingiva is affected
by the
1. vascularity of the gingiva.
2. epithelial keratinization.
3. thickness of the epithelium.
4. melanin pigmentation.

Back 9

E. All of the above.

Front 10

In health, the crest of the alveolar bone, as
seen in a radiograph, is situated
1~to~2mm apical to the cemento-enamel
junction. .sp 1 Radiographically, the
normal alveolar crest should parallel an
imaginary line drawn between the
cemento-enamel junction of adjacent teeth.
A. The first statement is true, the second
is false.
B. The first statement is false, the
second is true.
C. Both statements are true.
D. Both statements are false.

Back 10

C. Both statements are true.

Front 11

Which of the following cells suggests that
an immunologic response to plaque in the
sulcus occurs in chronic inflammatory
periodontal disease?
1. Mast cells.
2. Macrophages.
3. Plasma cells.
4. Neutrophils.
5. Lymphocytes.

Back 11

2. Macrophages.
3. Plasma cells.
5. Lymphocytes.

Front 12

Which cells migrate into the gingival
sulcus in the largest numbers in response
to the accumulation of plaque?
A. Plasma cells and monocytes.
B. Polymorphonuclear leukocytes.
C. Macrophages.
D. Lymphocytes.
E. Mast cells.

Back 12

B. Polymorphonuclear leukocytes.

Front 13

Histopathologic alterations associated with
the pathogenesis of periodontal disease
include
A. inflammatory exudate that can
involve neutrophils, lymphocytes and
plasma cells.
B. proliferative and degenerative
changes of the epithelium.
C. collagen destruction subjacent to the
junctional epithelium.
D. All of the above.

Back 13

D. All of the above.

Front 14

Mobility of teeth WITHOUT loss of bone
support suggests
A. a primary traumatic occlusion.
B. a secondary traumatic occlusion.
C. an atrophic condition of the
periodontium.
D. A. and C.

Back 14

A. a primary traumatic occlusion.

Front 15

Trauma from occlusion
A. initiates marginal gingivitis.
B. affects the blood supply to gingivae.
C. initiates periodontitis.
D. All of the above.

Back 15

B. affects the blood supply to gingivae.

Front 16

In the analysis of occlusion, which of the
following is potentially damaging?
A. Marginal ridge discrepancies.
B. Extruded teeth.
C. Wide occlusal tables resulting from
excessive wear.
D. Deep overbite with minimal overjet.
E. All of the above.

Back 16

E. All of the above.

Front 17

Elimination or reduction of periodontal
pockets will occur by planing and
curettage alone if the patient's periodontal
condition includes
A. hyperemic and edematous gingival
tissue.
B. gingival hyperplasia due to Dilantin
therapy.
C. chronic periodontal pockets.
D. acute necrotizing ulcerative
gingivitis.

Back 17

A. hyperemic and edematous gingival
tissue.

Front 18

The most common form of periodontal
disease is
A. gingivitis.
B. periodontitis.
C. gingival hyperplasia.
D. juvenile periodontitis.
E. periodontal disease atrophy.

Back 18

A. gingivitis.

Front 19

Which of the following factors may affect
probing depth measurements of a
periodontal pocket?
A. Probing force.
B. Probe type.
C. Angulation of probing.
D. All of the above.

Back 19

D. All of the above.

Front 20

Which of the following contains
microorganisms?
A. Acquired pellicle.
B. Calculus.
C. Dental plaque.
D. B. and C.
E. All of the above.

Back 20

D. B. and C.

Front 21

After periodontal surgery, sensitivity to
thermal change is reduced by
1. replaning the roots.
2. keeping the roots free of bacterial
plaque.
3. adjusting the occlusion.
4. desensitizing the roots with an
appropriate medicament.

Back 21

2. keeping the roots free of bacterial
plaque.
4. desensitizing the roots with an
appropriate medicament.

Front 22

A gingivectomy may be performed when
there is/are
A. horizontal bone loss.
B. no intrabony defects.
C. an adequate zone of attached gingiva.
D. a gingival pocket.
E. All of the above.

Back 22

E. All of the above.

Front 23

If a periodontal probe is inserted 4 or 5mm
to the base of a pocket on the mesialbuccal
of a tooth and then pushed facially
causing blanching, this indicates that
A. gingival hyperplasia exists.
B. there is an inadequate zone of
attached gingiva.
C. the lateral wall of the pocket does not
consist of bone.
D. None of the above.

Back 23

C. the lateral wall of the pocket does not
consist of bone.

Front 24

In periodontal flap surgery, the design of
the incision is influenced by the
A. frenum attachment.
B. depth of the vestibule.
C. amount of attached gingiva.
D. presence of infrabony defects.
E. All of the above.

Back 24

E. All of the above.

Front 25

INITIAL treatment of necrotizing
ulcerative gingivitis includes
1. debridement.
2. oral hygiene instruction.
3. occlusal adjustment.
4. gingivoplasty.

Back 25

1. debridement.
2. oral hygiene instruction

Front 26

Occlusal (night) guards are used to
A. treat bruxism.
B. reduce pocket formation.
C. prevent pulpitis.
D. permit eruption or elongation of
teeth

Back 26

A. treat bruxism.

Front 27

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

Back 27

1. edematous.
2. fibrotic.
4. infrabony.

Front 28

Maximum shrinkage after gingival
curettage can be expected from tissue that
is
A. fibroedematous.
B. edematous.
C. fibrotic.
D. formed within an infrabony pocket.
E. associated with exudate formation

Back 28

B. edematous.

Front 29

Antibiotic coverage should be provided
when performing subgingival curettage for
patients with
A. myocardial infarction.
B. dental implants.
C. valvular heart disease.
D. coronary artery disease.

Back 29

C. valvular heart disease

Front 30

As gingival inflammation progresses to
marginal periodontitis, the associated
changes are:
A. Apical migration and disintegration
of the epithelial attachment.
B. Resorption of the alveolar crest.
C. Destruction of the alveolar crest and
periodontal ligament fibres.
D. All of the above.
E. None of the above.

Back 30

D. All of the above.

Front 31

During tooth development, vitamin A
deficiency may result in
A. peg-shaped teeth.
B. partial anodontia (hypodontia).
C. Hutchinson's incisors.
D. enamel hypoplasia.
E. dentinogenesis imperfecta.

Back 31

D. enamel hypoplasia

Front 32

Dietary deficiency of vitamin D can result
in
A. abnormal formation of osteoid.
B. osteitis fibrosa cystica.
C. Paget's disease.
D. myositis ossificans.
E. osteogenesis imperfecta.

Back 32

A. abnormal formation of osteoid.

Front 33

Dental plaque is composed of
A. desquamated epithelial cells.
B. components from oral secretions.
C. bacteria and their products.
D. cuticle or pellicle.
E. All of the above.

Back 33

E. All of the above.

Front 34

The periodontium is best able to tolerate
forces directed to a tooth
A. horizontally.
B. laterally.
C. obliquely.
D. vertically.

Back 34

D. vertically.

Front 35

In the development of gingivitis, the fibre
groups first lost are
A. oblique.
B. horizontal.
C. transeptal.
D. free gingival.

Back 35

D. free gingival.

Front 36

The color of gingiva is influenced by
1. the degree of keratinization.
2. connective tissue vascularity.
3. amount of melanin pigmentation.
4. subgingival deposits.

Back 36

E. All of the above.

Front 37

Supragingival calculus is most often found
on the
A. lingual of mandibular anterior teeth.
B. buccal of mandibular anterior teeth.
C. palatal of maxillary molars.
D. lingual of mandibular molars.

Back 37

A. lingual of mandibular anterior teeth.

Front 38

Radiographs of a periodontally related
osseous defect show the
A. number of bony walls.
B. measurement of the defect.
C. location of the epithelial attachment.
D. None of the above.

Back 38

D. None of the above.

Front 39

Which of the following root surfaces are
most likely to have concavities that will
make root planing difficult?
1. Mesial surfaces of maxillary first
premolars.
2. Mesial surfaces of mandibular
incisors.
3. Mesial surfaces of maxillary incisors.
4. Distal surfaces of mandibular second
premolars.

Back 39

1. Mesial surfaces of maxillary first
premolars.
2. Mesial surfaces of mandibular
incisors

Front 40

Plaque accumulation on tooth surfaces is
affected by
A. the anatomy, position and surface
characteristics of the teeth.
B. the architecture of the gingival
tissues and their relationship to the
teeth.
C. friction at the tooth surface from the
diet, lips and tongue.
D. All of the above.

Back 40

D. All of the above.

Front 41

Calculus contributes to gingival
inflammation by
A. having a porous surface.
B. having cytotoxic bacterial products.
C. promoting bacterial colonization.
D. all of the above.

Back 41

D. all of the above.

Front 42

Abnormalities in blood clotting may be
associated with a deficiency of vitamin
A. B12.
B. C.
C. E.
D. K.

Back 42

D. K.

Front 43

Overhangs on restorations initiate chronic
inflammatory periodontal disease by
A. increasing plaque retention.
B. increasing food retention.
C. causing traumatic occlusion.
D. causing pressure atrophy

Back 43

A. increasing plaque retention.

Front 44

Caries in older persons is most frequently
found on which of the following
locations?
A. Pits and fissures.
B. Proximal enamel.
C. Root surfaces.
D. Incisal dentin.

Back 44

C. Root surfaces

Front 45

The etiology of erosion of the teeth is
A. unknown.
B. hyperacidity of the saliva.
C. deficiency of vitamins A and D.
D. excessive ingestion of citrus fruits.

Back 45

D. excessive ingestion of citrus fruits.

Front 46

Temporo Mandibular Joint disease in
children results from
A. rheumatoid arthritis.
B. middle ear infection.
C. trauma.
D. heredity.
E. All of the above.

Back 46

E. All of the above.

Front 47

Migration of teeth may be associated with
1. lip habits.
2. tongue habits.
3. bruxism
4. periodontitis.

Back 47

E. All of the above

Front 48

The signs of chronic periodontitis include
1. inflammation.
2. degeneration.
3. bone resorption.
4. no bone resorption.
5. periodontal pockets.

Back 48

1. inflammation.
3. bone resorption.
5. periodontal pockets.

Front 49

A characteristic of a true periodontal
pocket is
A. gingival edema.
B. gingival hyperplasia.
C. alveolar bone loss.
D. None of the above.

Back 49

C. alveolar bone loss

Front 50

The predominant cells in the inflammatory
exudate of an acute periodontal abscess
are
A. neutrophils.
B. eosinophils.
C. basophils.
D. lymphocytes.
E. monocytes.

Back 50

A. neutrophils