National Dental Examining Board of Canada ( Operative dentistry)

[Editor Keymaster]

most common malignant tumors of minor salivary gland ?
a..adenoid cystic carcinoma and adenocarcinoma.

b..mucoepidermoid carcinoma and adenoid cystic carcinoma.

d..mucoepidermoid carcinoma and polymorphous low grade adenocarcinoma
A

[Editor Keymaster]

Antibiotic can not be given in:
a..rheumatic fever.
b..congenital heart disease.
c..diabetes.
B

[Editor Keymaster]

What is a pier abutment
1.single tooth holding one Pontiac
2.tooth supports removable partial denture
3.all of the above
4.non of the above
4

[Editor Keymaster]

Prophylaxix for patient with bacterial endocarditis
A ortho band placement
B routine dental cleaning
C Non ligamentary injection
D suture removal
A

[Editor Keymaster]

The root canal treated teeth has the best prognosis when the root canal is instrumented and obturated
1.to the radiograph apex
2.1mm beyond the radiograph apex
3.1-2mm short of the radiograph apex
3

[Editor Keymaster]

Matrix band is a problem when placing a two surface amalgam in which surface
A mesial of upper 6
B distal of upper 4
C mesial of upper 5
D distal of lower 6
b

[Editor Keymaster]

which one worst prognosis ?
a. avulsed tooth with closed apex with less than 1 houre
b. avulsed tooth with closed apex with more than 1 houre**
c. avulsed tooth with open apex with less than 1 houre
d. avulsed tooth with open apex with more than 1 houre
b

[Editor Keymaster]

Pt is fine with trauma to specific area best diagnosis
A papilloma
B fibroma
C hematoma
c

[Editor Keymaster]

Serial extraction done for space deficiency in
A lower anterior
B lower posterior
C upper anterior
D upper posterior
A

[Editor Keymaster]

Organism implicated on causing severe spreading abscesses include
A bacteriodes
B enterococcus
C fusobacterium
D campylobacter
c

[Editor Keymaster]

Type of approved probe for exploring pit & fissure sealant
A blunt
B periodontal
C naber
A

[Editor Keymaster]

patient presented with a complaint that he has a burning mouth,upon examination you found his tongue to be bald and red, what are the investigations you will order?
a. exfoliation cytology
b. cytology
c. bone marrow cytology
A

[Editor Keymaster]

Porous denture management
A reline
B rebase
C remake
c

[Editor Keymaster]

PDL cell coordinates bone resorption and deposition “remodling”?
A- fibroblasts (in collagen not bone )
B- osteoblasts
C- osteoclasts
D- cementoblast
c

[Editor Keymaster]

If you do implant and there is only 4 mm interocclusal space what to do?

A- Remove the implant and put it deeper in bone

B- make RPD instead of implant
b

[Author]

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