A. Animal
B. Mineral
C. Insect
D. Vegetable
The base constituents of dental waxes come from three main sources except______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Utility wax
B. Base plate wax
C. Beading wax
D. Boxing wax
A. hole porosity
B. Gas inclusion porosity
C. Micro porosity
D. Subsurface porosity
A. To provide a smooth and glossy surface
B. Increase toughness
C. Decrease toughness
D. Decrease flow at room temperature
Function of carnauba wax_________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Platinum
B. Copper
C. Silver
D. Gold
A. Tensile strength
B. Proportional limit
C. Ductility
D. Hardness
Softening heat treatment of alloy increases_________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Form an opening of molten metal to enter the mold
B. Help polish cast restorations
C. Eliminate air bubbles on the wax pattern
D. Reproduce fine detail
The function of a sprue is to_______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Carbon
B. Chromium
C. Nickel
D. Titanium
Stabilization of stainless steel is achieved by adding____________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. 100 Mpa
B. 240 Mpa
C. 560 Mpa
D. 700 Mpa
The yield strength of AUstenite (NiTi alloy) is______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Dimensional change
B. Thermal conductivity
C. Warpage
D. Tarnish and corrosion
