Method for producing a dental prosthesis comprising a plastic prosthesis base and a prefabricated standard prosthetic tooth in an ablative machining device, digitally recorded data of an oral cavity being stored in a computer connected to the machining device, the dental prosthesis being digitally created and stored on the basis of the digitally recorded data of the oral cavity by means of a CAD method, the machining device being controlled on the basis of the digitally created and stored dental prosthesis, with the following steps: a. providing a plastic workpiece having a first machining side and a second machining side; b. selection of a digitally acquired pre-assembled standard prosthetic tooth by comparison with the digitally acquired data of the oral cavity; c. a chewing surface impression is accurately worked into the first machining side of the plastic workpiece using the selected prefabricated standard prosthetic tooth and the prefabricated standard prosthetic tooth is inserted so that a basal side of the prefabricated standard prosthetic tooth protrudes from the plastic workpiece; d. the basal side of the prefabricated standard prosthetic tooth is machined by the machining device at a height (h), a width (b) and a shape, an actual/target comparison constantly being made between the prefabricated standard prosthetic tooth to be machined and the digitally recorded data of the prosthetic tooth produced in the CAD method; e. the height (h), the width (b) and the shape of the machined basal side of the prefabricated standard prosthetic tooth are stored in the computer as basal machining data; f. the second machining side of the plastic workpiece is processed on the basis of the data of the oral cavity and the digitally recorded data of the dental prosthesis produced in the CAD method for the prosthesis base, an alveolus being produced on the basis of the basal machining data; g. the machined pre-fabricated standard prosthetic tooth is inserted into the alveolus and fixed. a. providing a plastic workpiece having a first machining side and a second machining side; b. selection of a digitally acquired pre-assembled standard prosthetic tooth by comparison with the digitally acquired data of the oral cavity; c. a chewing surface impression is accurately worked into the first machining side of the plastic workpiece using the selected prefabricated standard prosthetic tooth and the prefabricated standard prosthetic tooth is inserted so that a basal side of the prefabricated standard prosthetic tooth protrudes from the plastic workpiece; d. the basal side of the prefabricated standard prosthetic tooth is machined by the machining device at a height (h), a width (b) and a shape, an actual/target comparison constantly being made between the prefabricated standard prosthetic tooth to be machined and the digitally recorded data of the prosthetic tooth produced in the CAD method; e. the height (h), the width (b) and the shape of the machined basal side of the prefabricated standard prosthetic tooth are stored in the computer as basal machining data; f. the second machining side of the plastic workpiece is processed on the basis of the data of the oral cavity and the digitally recorded data of the dental prosthesis produced in the CAD method for the prosthesis base, an alveolus being produced on the basis of the basal machining data; g. the machined pre-fabricated standard prosthetic tooth is inserted into the alveolus and fixed.