Stabilization of stainless steel is achieved by adding____________?
A. Carbon
B. Chromium
C. Nickel
D. Titanium
Medical Mcqs
The yield strength of AUstenite (NiTi alloy) is______________?
The yield strength of AUstenite (NiTi alloy) is______________?
A. 100 Mpa
B. 240 Mpa
C. 560 Mpa
D. 700 Mpa
A highly polished surface on a metallic dental restoration aids considerably in the prevention of the____________?
A highly polished surface on a metallic dental restoration aids considerably in the prevention of the____________?
A. Dimensional change
B. Thermal conductivity
C. Warpage
D. Tarnish and corrosion
Tublulence of molten gold is due to _____________?
Tublulence of molten gold is due to _____________?
A. Impurities in gold
B. Improper venting
C. A and B
D. None of the above
In a patient with allergy to costume jewelry, which of the following is contraindicated______________?
In a patient with allergy to costume jewelry, which of the following is contraindicated______________?
A. High gold
B. Low gold
C. Palladium – Ag
D. Ni – Cr
Indium in metal alloys_______________?
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
Mouth temperature waxes are_______________?
Mouth temperature waxes are_______________?
A. Iowa wax
B. Modeling wax
C. Green stick wax
D. None of the above
Incomplete casting is the result of_____________?
Incomplete casting is the result of_____________?
A. More porous investment in the mould
B. Narrow sprue diameter
C. Hollow sprue
D. Large reservoir
Glossy smooth margins of a casting are due to_____________?
Glossy smooth margins of a casting are due to_____________?
A. Shrinkage of alloy on cooling
B. Investment breakdown
C. Incomplete wax elimination
D. Incomplete gas elimination
Gypsum bonded investment should not be heated over______________?
Gypsum bonded investment should not be heated over______________?
A. 700°C
B. 1,300°C
C. 1,063°C
D. 900°C