A. Under vacuum in argon atmosphere
B. Under air pressure in nitrogen atmosphere
C. In specially fabricated aluminium vanadium
D. Using CAD-CAM technique
Related Mcqs:
- The most commonly used Titanium alloy for dental and medical purposes is________________?
A. Ti 6Al 4V
B. Ti 5Al 4V
C. Ti 5Al 5V
D. Ti 6Al 6V - Mechanical properties of Cp Titanium are similar to alloys_____________?
A. Type III and Type IV gold
B. Type V and type VI gold
C. Type VII and type VIII gold
D. None of the above - Advantage of titanium over other base metal alloys_______________?
A. Low weight
B. Low cost
C. Low strength
D. Low melting point - Nickel-Titanium alloy has__________________?
A. Unreliable spring back
B. low spring back
C. Minimal spring back
D. None of the above - The melting point of titanium is __________ degree celsius?
A. 1056
B. 1560
C. 1668
D. 1886 - Addition of large amounts of platinum to a casting gold alloy will________________?
A. Decrease its strength and ability to be hardened
B. Decrease its tarnish resistance
C. Increase its fusion temperature
D. Redden the alloy - Gap between true end of casting ring and wax pattern should be______________?
A. ¼ inch
B. ½ inch
C. 3/8 inch
D. one inch - Reduction in the fusion temperature of dental gold casting alloys is caused by presence of______________?
A. Platinum
B. Copper
C. Silver
D. Gold - Air bubbles formed on the surface of casting is probably due to________________?
A. Improper casting pressure
B. Improper heating of the investment
C. Improper angulation of sprue
D. Improper wetting of the wax pattern by the investment - Casting shrinkage is compensated by_______________?
A. Thermal expansion
B. Hygroscopic expansion
C. Wax expansion
D. All of the above
