Violation
In order to achieve a proper interproximal contact when using a spherical alloy, which of the following is/are essential? 1. A larger sized condenser. 2. A thinner matrix band. 3. An anatomical wedge. 4. Use of mechanical condensation.
(2) and (4)
(1) (2) (3)
(1) and (3)
All of the above
(4) only