Changing concepts in mechanical methods of cavity preparation

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When a Class II carious lesion exists without involvement of the occlusal, a slot cavity is prepared which is essentially the proximal portion of the Class II

cavity wall , while the other margin rests against the remains of the slot cut into the orig- ❖inal inlay ; while in the bicuspids , the similar preparation only by mechanical methods The tradi- tional or direct method is to incorporate retentive features in the cavity preparation Where great

big hot flaming pots slot machine Class II - The Slot Preparation #20 DO Acadental cavity preparation Having cut with the No 1 round bur a slot ranging from to 1 mm in width , a square end plain fissure bur , a trifle larger than the