All of the following statements about slotretained complex amalgams are true except _____.: (A) Slots should be 1.5 mm in depth., (B) Slots should be 1 mm or more in length., (C) Slots may be segmented or continuous., (D) Slots should be placed at least 0.5 mm inside the DEJ.
Answer is A. The longer a slot, the better. They should be inside the DEJ and prepared with an inverted cone bur to a depth of 1 mm.