Medical MCQs

5099 MCQs  (Page 73 of 510)

Incomplete casting is the result of_____________?
A. More porous investment in the mould
B. Narrow sprue diameter
C. Hollow sprue pin
D. Large reservoir
Mouth temperature waxes are_______________?
A. Iowa wax
B. Modeling wax
C. Green stick wax
D. None of the above
Indium in metal alloys_______________?
A. Improve bonding
B. Harden the metal ceramic ag-pd alloy
C. Both a and b
D. None of the above
Tublulence of molten gold is due to _____________?
A. Impurities in gold
B. Improper venting
C. A and b
D. None of the above
Which material undergoes hysteresis ?
A. Irreversible hydrocolloid
B. Reversible hydrocolloid
C. Impression plaster
D. Metallic oxide paste
Syringe material is______________?
A. High viscosity elastomer
B. Medium viscosity elastomer
C. Medium & low viscosity elastomer
D. Low viscosity elastomer
Alginate impression material is________________?
A. Non-elastic impression material
B. Thermoplastic impression material
C. More mucostatic than zoe
D. Less mucostatic than zoe