Key Concepts of Amalgam Cavity Design Quiz

1. Which of the following 'allows the tooth and restorative material to withstand masticatory forces, down the long axis of the tooth'?

Resistance Form

Outline Form

Convenience Form

Final Form

Retention Form

2. Which of the following is not a property of amalgam?

Good wear resistance

Adhesive

Brittle in thin sections

Contains mercury

High compressive strength

3. What is the ideal cavosurface angle for an amalgam restoration?

45°

70°

100°

40°

90°

4. Which of the following 'designing the cavity to resist displacement of the restorative material from lifting forces'?

Retention Form

Final Form

Convenience Form

Resistance Form

Outline Form

5. What is the minimum cavity depth required for amalgam?

2mm

0.5mm

2.5mm

1mm

1.5mm