Multiple Choice
Why is the alloy substructure degassed in a ceramic oven during fabrication of a ceramic-alloy restoration?
A) Remove organic impurities from the alloy surface.
B) Promote the formation of an oxide layer on the alloy.
C) Remove hydrogen cyanide gas formed during the metal casting process.
D) A, B, and C are all correct.
E) Only A and B are correct.
Correct Answer:
Verified
Correct Answer:
Verified
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