The blank has a restoration segment (4), a holder (2), and a partition segment (3) that connects the holder (2) to the restoration segment (4). The material of the partition segment (3) visually differs from that of the restoration segment (4). In preparation for machining, in the context of CAD/CAM machining, the outer shape of the workpiece (6) to be produced is fitted into the restoration segment (4) such that a smooth surface of the outer shape comes to lie in the interface plane (5) between the segments. The blank is then worked mechanically in order to create the outer shape. A partition pin (3b, 3c) remains between the holder (2) and the restoration segment (4) and is removed. A partition-pin-base (13) remaining in the restoration segment (4) can then be removed manually. A color marker simplifies this work step.
