A. Iridium
B. Ruthinium
C. Indium
D. Platinum
A. Supracocclusion of restoration
B. Retained cement in gingival sulcus
C. Excess acid in mix
D. Galvanic current caused by gold onlay occluding with a large restoration
A. 0%
B. 2 to 3%
C. 5 to 10%
D. <1%
A. To felicitate wetting of ring liner
B. To felicitate mixing investment
C. To reduce contact angle of liquid with max surface
D. For better wax elimination
Function of wetting agents used in casting procedure is_________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Palladium
B. Silver
C. Copper
D. Zinc
The deoxidizing agent added to dental alloys is______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. It prevents the formation of copper oxide
B. It prevents the formation of chromium oxide or dissolves chromic oxide layer
C. It prevents the flow of material in undesirable area
D. Increase the strength of solder
Which of the following is function of fluoride flux in soldering process ? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. N 25%
B. 25%
C. >40%
D. 0%
Percentage of gold in high noble alloy is______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Suckback porosity
B. Gas inclusion porosity
C. Localized shrinkage porosity
D. Microporosity
A. Prevent the oxidation of the metal during melting
B. increase the melting point of the flux
C. Flaring the point of the sprue attachment
D. None of the above
Casting flux is used to_______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Candellila wax
B. Paraffin wax
C. Carnauba wax
D. Gum dammar
The main ingredient of inlay wax is__________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy