Abstract: The invention relates a blank for producing a dental prosthesis (tooth crown) comprising a mechanically processable material block (10) and a holder (11) connected thereto for clamping in an automatic processing tool. Said block (10) is provided with a sub-gingival anatomic implant connecting part (14) which is protrusively arranged thereon and in which an implant fixture for fixing it to the implant head is formed. The holder (11) is arranged on the surface (12) of the block (10) arrangement side and the implant fixture to a surface (13) on the implant side, thereby making it possible to work the blank by means of a computer-controlled conventional tool.

Abstract: A blank for preparing artificial tooth parts, such as inlays, overlays or partial and complete crowns and bridges comprises a body of laminate material. The body has at least one layer of high abrasive resistance, at least one layer of high breaking strength, and at least one layer of lower hardness and breaking strength. For forming the tooth part, material is removed from the blank in such a way that the layer having high fracture strength forms a reinforcing structure. In a single working step, a tooth part of high strength can be machined.