Which of the Following Statements Is True Regarding the Strength

question 37

Multiple Choice

Which of the following statements is true regarding the strength of dental amalgam?

• A) Amalgams are stronger in compression than composites but weaker than glass ionomers.
• B) Amalgams are relatively weak in tension and shear and therefore require adequate bulk to resist breaking.
• C) Some high-copper amalgams gain approximately 80% of their strength in the first hour.
• D) High-copper amalgams have a much higher compressive strength than low-copper amalgams once they have completely set at about 24 hours.

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Definitions:

Voucher System

A control mechanism in accounting where vouchers are used to authorize the disbursement of cash and record financial transactions.