Which of the Following Is True Concerning Grain Formation in Dental

Multiple Choice

Which of the following is true concerning grain formation in dental casting alloys?

A) Large crystals produce more desirable properties in the metal alloy than small crystals do.
B) Iridium or ruthenium is added to gold-base alloys to keep the crystals from growing too large.
C) Reheating gold-based alloys will degrade the physical properties.
D) Reheating base-metal alloys will not degrade the physical properties.