A. Prolonged heating:
B. Rapid heating me
C. Water film contamination
D. Too high pressure during casting
A. More
B. Less
C. Equal
D. Depends on the alloy type
A. Passivity
B. High Fusion Temperature
C. High Molecular Weight
D. Co-efficient of Thermal Expansion
A. Boric acid
A. Borax
B. Fluoride
C. Rouge
A. Greater than the substrate material
B. Lesser than the substrate material
C. Equal to the substrate material
D. Temperature not relevant
A. Tin
B. Beryllium
C. Molybdenum
D. Carbon
A. Hydrogen
B. Natural gas
C. Acetylene
D. Propane
A. Magnesium oxide & Phosphate
B. Magnesium oxide & Phosphoric acid
C. Magnesium oxide & Monoammonium phosphate
D. Magnesium oxide & Ortho Phosphoric acid
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