The highest mercury concentration in amalgam filling is found_____________?
Correct answer: A. At the margin of the restoration
- A. At the margin of the restoration
- B. In the centre of the restoration
- C. In the deepest part of the restoration
- D. None of the above
Explanation
Mercury concentration tends to be greatest near the margins, where condensation and adaptation can leave a more mercury-rich matrix. This region is therefore more vulnerable to weakness, creep and marginal breakdown.
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