Abstract: Material for a dental prosthesis consisting of fiber glass reinforced plastic. The material is used to produce a blank by means of a special injection-molding process, which can be worked by means of a machining process. A method and a device for determining the shape of a duplicate of a remaining tooth area to be provided with a dental prosthesis. The shape of the duplicate is determined, as is the shape of duplicate sections into which the duplicate has been divided, the determined data are stored and combined. A method and arrangement for producing a dental prosthesis. The shape of a duplicate (42) of a remaining tooth area to be provided with the dental prosthesis is determined by means of a shape determination device (110), the determined data are stored in the form of digital data (DD), and the dental prosthesis (143) is produced in a production machine (114), which is controlled by means of production data (FD).