MCQ MED EXAM
DM
2016-2017
1-The dental materials should be non toxic in relation to:
a.Biological requirement
b. Idial requirement
c. General requirement
d-all of the above
2-Translucence is the property that deals with:
a.Esthetics
b.Density
c. Thermal conductivity
d. Electrical activity
3- linear coefficient of thermal expansion and contraction means:
a.Increase the kinetic energy of the atoms b. Increase the size of atoms
c. Increase the volume of the material
d. all of the above
4- To compensate the contraction of metal crown the investment material should be:
a- contract also
b- remain stable
c- expand
d- none of the above
5-The density of lower complete denture should be high in order to
,a.control its mobility
b.withstand masticatory forces
c.easy to insert and remove
d. none of the above.
6- Resin cement solubility is:
a- 6.5 mg/mm
b- 7.5 mg/mm
c- 7.5kg/mm
d-none of the above.
7-Tin or lead used in complete denture in order to:
a.To increase stability
b. To increase retention
c. To be more strong against fracture.
d. All of the above
8- Absorption of fluids in dental materials is not acceptable due to:
a. Toxicity
b. Un hygienic
c. dimensional changes
d. b and c
9-Type I gypsum product is:
a.Die stone
b.Impression plaster
c. Model plaster
, d. stone
10-heating gypsum produced:
a- (Cas04.2H20)
b- (CaSO4. H20)
c- (CaSO4.unhydrate)
d- (CaS04 1/2H20)
11- Plaster produced when the gypsum is heated in open container to:
a.110-120 C
b. 125 C
c. 110-130 C
d. 150 C
12- Die stone produced by boiling gypsum with:
a - 30 % NaCl
b - 40 % CaCl
c- 30 % CaCl
d - 30 % AlCl
13-The more accepted theory of setting of gypsum is:
a-crystalline theory
b- gel theory
c -spherical theory
d- none of the above.
DM
2016-2017
1-The dental materials should be non toxic in relation to:
a.Biological requirement
b. Idial requirement
c. General requirement
d-all of the above
2-Translucence is the property that deals with:
a.Esthetics
b.Density
c. Thermal conductivity
d. Electrical activity
3- linear coefficient of thermal expansion and contraction means:
a.Increase the kinetic energy of the atoms b. Increase the size of atoms
c. Increase the volume of the material
d. all of the above
4- To compensate the contraction of metal crown the investment material should be:
a- contract also
b- remain stable
c- expand
d- none of the above
5-The density of lower complete denture should be high in order to
,a.control its mobility
b.withstand masticatory forces
c.easy to insert and remove
d. none of the above.
6- Resin cement solubility is:
a- 6.5 mg/mm
b- 7.5 mg/mm
c- 7.5kg/mm
d-none of the above.
7-Tin or lead used in complete denture in order to:
a.To increase stability
b. To increase retention
c. To be more strong against fracture.
d. All of the above
8- Absorption of fluids in dental materials is not acceptable due to:
a. Toxicity
b. Un hygienic
c. dimensional changes
d. b and c
9-Type I gypsum product is:
a.Die stone
b.Impression plaster
c. Model plaster
, d. stone
10-heating gypsum produced:
a- (Cas04.2H20)
b- (CaSO4. H20)
c- (CaSO4.unhydrate)
d- (CaS04 1/2H20)
11- Plaster produced when the gypsum is heated in open container to:
a.110-120 C
b. 125 C
c. 110-130 C
d. 150 C
12- Die stone produced by boiling gypsum with:
a - 30 % NaCl
b - 40 % CaCl
c- 30 % CaCl
d - 30 % AlCl
13-The more accepted theory of setting of gypsum is:
a-crystalline theory
b- gel theory
c -spherical theory
d- none of the above.
