National Dental Examining Board of Canada (Prosthodontic)

[Editor Keymaster]

Which factor is not important in remineralisation and demineralisation of early carious lesions:
a. Plaque composition
b. Frequency of sugar intake
c. Fluoride content of dentifrices
d. Gingival inflammation
e. Salivary flow
d

[Editor Keymaster]

A 55-year-old gentleman presents to you in general practice complaining of an

extremely sore mouth and the recent appearance of white patches on his cheeks.

He thinks he may be allergic to his dentures. The patient was fitted with a new set

of complete dentures 3 weeks ago and since then his mouth has become

progressively more sore. In recent days he has noticed the appearance of white

patches on his cheeks. He had not noticed these before. One year ago the patient

was diagnosed as a noninsulin-dependent diabetic and he has a history of peptic

ulceration. Current medications are “metformin” and “ranitidine”. He is otherwise

fit and well.

***The patient’s right and left buccal mucosa on presentation.

Q1. According to history and clinical presentation, the lesion might be:

a. Candidal Leukoplakia

b. Erosive lichen planus

c. Lupus erythematosus

d. Lichenoid drug reaction

Q.2. In this case which of the following will be useful for diagnosis?

a. Incisional biopsy

b. Microbiological test

c. Serological test

d. None of the above

e. All of the above
d,a

[Editor Keymaster]

A change in continuity of the occlusal plane is often observed after ankylosis of a tooth. This change is caused by:
A. differential eruption sequences.
B. the ankylosed teeth sinking into the alveolar bone.
C. localized growth inhibition of the alveolar process.
D. continued eruption of non-ankylosed teeth and growth of the alveolar process.
d

[Editor Keymaster]

Instability of denture When chewing food causes:
1. Loss of post dam seal
2. Anterior teeth too far labially
4. Improper incising habits
5. Lower posteriors set off ridge
4

[Editor Keymaster]

A 4mm diameter carious exposure occurs on a permanent first molar of a 7-year old child. The tooth is vital and has no periapical involvement. The appropriate initial treatment would be to perform a(n)
A. pulp capping.
B. pulpotomy.
C. pulpectomy.
D. extraction.
b

[Editor Keymaster]

What is the treatment of displaced left condylar fracture?
A. Soft diet.
B. Closed reduction.
C. Open reduction.
D. Inter maxillary fixation.
E. elastic inter maxillary fixation
d

[Editor Keymaster]

Which of the following techniques would be the best preventive measure?
A elimination of sugars from diet
B reduce frequency of intake of cariogenic food stuffs
C rinse and swish with water after meals and snacks
D substitution of alcohol based sugar for sucrose
b

[Editor Keymaster]

Good oral hygiene and fluoridation is LEAST useful in preventing caries of:
A. Pit and fissure
B. Smooth surface
C. Inaccessible area
c

[Editor Keymaster]

After you have successfully treated an Angle’s Class II division I malocclusion. The ideal Class I incisor relationship has been produced and 14, 24 were extracted. The arches are now well aligned. What molar occlusion will there be at the end of treatment when all spaces are closed:
A.​Full unit Class II
B.​½ unit class II
C.​Class I
D.​½ unit Class III
E.​Full unit Class III
a

[Editor Keymaster]

Good oral hygiene and fluoridation is LEAST useful in preventing caries of:
A. Pit and fissure
B. Smooth surface
C. Inaccessible area

Fluoride application is most effective for prevention of:
A. Pit and Fissure Caries B. Smooth Surface Caries
C. Occlusal Caries
D. Deeply Caviated Caries
a,b

[Editor Keymaster]

Tests to investigate nerve sensation. What is INCORRECT?
a. two-point discrimination
b. sharp test
c. blunt test
d. pressure test (Refer to Odell)
e. thermal test
f. direction test
d

[Editor Keymaster]

Lignocaine 2% when compared with prilocaine 4% with 0.5%IU felypressin
a) equally effective
b) more effective
c) less effective

Incase of injecting with lignocaine and procaine, what are the chances of nerve damage with procaine?
A. Same
B. Less
C. Twice
a,a

[Editor Keymaster]

the first priority in the tooth with multiple carious exposure is

a-control of pain

b-complete examination

c-restoration of all teeth

d-planning of the treatment
a

[Editor Keymaster]

– Which nerve is affected if a patient is unable to gaze laterally to the left
a)right abducens
(b) left abducens
(c)right trochlear
(d)left trochlear

– Which nerve is affected if the tongue deviates to the right when protruded
a)right hypoglossal
(b)left hypoglossal
(c)right glossopharyngeal
(d) left glossopharyngeal
b,a

[Editor Keymaster]

Which one is true about gingival tissue regeneration?

i) It prohibits epithelial growth and let bone growth to heal the lesion
ii) It prohibite epithelial grwth and let the cemento blasts to growth and make new
cementom
iii) It provoke periodontal granulation tissue to growth and heal periodontal problem
3

[Author]

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