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What is The cavity varnish applied reduces post operative sensitivity in amalgam restoration by: and explain in detail?
Varnish reduces the infiltration of irritating fluids through marginal crevices and lessens pulpal irritation. Varnish is also claimed to prevent the penetration of corrosion products of amalgams into the dentinal tubules, thereby reducing the unsightly tooth discoloration often associated with amalgam restorations.
Phillips 12 ed page 314