Amalgam restorations give the best clinical service when the residual mercury content is_______________?
Correct answer: B. 48-52%
- A. 38-42%
- B. 48-52%
- C. 58-62%
- D. 68-72%
Explanation
Amalgam generally provides the best clinical service when the residual mercury content is approximately 48 to 52%. Excess mercury leaves a weaker matrix and increases creep, corrosion and marginal breakdown.
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