A. Dimensional change
B. Thermal conductivity
C. Warpage
D. Tarnish and corrosion
Metallurgy
Metallurgy
A. Impurities in gold
B. Improper venting
C. A and B
D. None of the above
A. High gold
B. Low gold
C. Palladium – Ag
D. Ni – Cr
A. Improve bonding
B. Harden the metal ceramic Ag-Pd alloy
C. Both A and B
D. None of the above
A. Iowa wax
B. Modeling wax
C. Green stick wax
D. None of the above
A. More porous investment in the mould
B. Narrow sprue diameter
C. Hollow sprue pin
D. Large reservoir
A. Shrinkage of alloy on cooling
B. Investment breakdown
C. Incomplete wax elimination
D. Incomplete gas elimination
A. 700°C
B. 1,300°C
C. 1,063°C
D. 900°C
A. 30% cobalt and 60% chrominum
B. 60% cobalt and 30% chrominum
C. 1% palladium
D. 20% gold
A. Ti 6Al 4V
B. Ti 5Al 4V
C. Ti 5Al 5V
D. Ti 6Al 6V
