Key Concepts of Amalgam Cavity Design Quiz Prateek Biyani - June 18, 2018 0 1. What is the minimum cavity depth required for amalgam? 2mm 2.5mm 1mm 1.5mm 0.5mm2. Which of the following is not a property of amalgam? Contains mercury Good wear resistance High compressive strength Adhesive Brittle in thin sections3. What is the ideal cavosurface angle for an amalgam restoration? 90° 45° 100° 70° 40°4. Which of the following 'designing the cavity to resist displacement of the restorative material from lifting forces'? Retention Form Convenience Form Resistance Form Final Form Outline Form5. Which of the following 'allows the tooth and restorative material to withstand masticatory forces, down the long axis of the tooth'? Resistance Form Convenience Form Outline Form Final Form Retention FormTime is Up!