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.
(1) (2) (3)
(1) and (3)
(2) and (4)
(4) only
All of the above
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