Composite resin is made of the following materials except one. Which one is the exception?
A) BIS-GMA
B) Quartz
C) Copper
D) Silica
C
Explanation: A) Copper is used in amalgam restorations.
B) Copper is used in amalgam restorations.
C) Copper is used in amalgam restorations.
D) Copper is used in amalgam restorations.
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