The cavity varnish applied reduces post operative sensitivity in amalgam restoration by____________?
Correct answer: B. Minimize marginal leakage around restoration
- A. Decreasing conduction of heat to pulp
- B. Minimize marginal leakage around restoration
- C. By altering the chemical composition of restoration materials
- D. By preventing penetration of corrosion products into the dentinal tubules
Explanation
Varnish seals dentinal tubules and reduces marginal microleakage, limiting movement of fluids that stimulates pulpal nerves. Its very thin film provides little meaningful thermal insulation, so minimizing leakage is the best answer.
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