Dental For an unbounded amalgam restoration, what should be done before copal varnish is applied ? A Dentine desensitiser is applied B Smear layer is left intact C Smear layer is modified D After removal of enamel smear layer only 💡 Explanation For an unbounded amalgam restoration, what should be done before copal varnish is applied ? ✓ Correct Answer: A. Dentine desensitiser is applied