Amalgam achieves 70% of the strength by____________?
Correct answer: C. 8 hours
- A. hours
- B. 4 hours
- C. 8 hours
- D. 16 hours
Explanation
Amalgam gains strength gradually after placement and reaches about 70% of its ultimate strength at approximately 8 hours. It continues to strengthen over the following days, so early loading should be avoided.
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