Method for producing an auxiliary device for fastening at least one attachment element to an assigned tooth of a patient, the method comprising the steps of: 1a) creating a three-dimensional digital model of the actual position of the at least one assigned tooth and, if precisely one attachment element is to be fastened to an assigned tooth, of at least one tooth adjacent to said tooth, 1b) transforming the model, created in step 1a), of the actual position of the teeth into a three-dimensional digital model of a desired position of the teeth, 1c) modifying the three-dimensional digital model, determined in step 1b), of the desired position of the teeth by virtually arranging a three-dimensional digital model of each attachment element in a corresponding desired position on the model, determined in step 1b), of the desired position of the teeth, 1d) transforming the modified three-dimensional digital model, obtained in step 1c), of the desired position of the teeth into a modified three-dimensional digital model of the actual position of the teeth, the transformation undertaken in this step being the inverse transformation to the transformation undertaken in step 1b), characterised in that either before or after the transformation carried out in step 1d), the at least one three-dimensional digital model representing the at least one attachment element is replaced with a three-dimensional digital model of a corresponding holding device, which is connected to the corresponding tooth and holds the at least one attachment element in the corresponding desired position in an interlocking manner, and in that it comprises the following additional steps: 1e) producing a three-dimensional real model of the actual position of the teeth including the at least one, integrally formed holding device on the basis of the modified three-dimensional digital model, obtained in step 1d), of the actual position of the teeth including the at least one holding device, 1f) inserting the at least one attachment element in the at least one holding device of the real model, 1g) embedding the attachment element received in the at least one holding device and a plurality of characteristic planar portions of the real model by means of a curable moulding compound, 1h) curing the moulding compound, and 1i) removing the cured moulding compound including the at least one attachment element held thereby as an auxiliary device for fastening the at least one attachment element to the assigned tooth from the real model. 1a) creating a three-dimensional digital model of the actual position of the at least one assigned tooth and, if precisely one attachment element is to be fastened to an assigned tooth, of at least one tooth adjacent to said tooth, 1b) transforming the model, created in step 1a), of the actual position of the teeth into a three-dimensional digital model of a desired position of the teeth, 1c) modifying the three-dimensional digital model, determined in step 1b), of the desired position of the teeth by virtually arranging a three-dimensional digital model of each attachment element in a corresponding desired position on the model, determined in step 1b), of the desired position of the teeth, 1d) transforming the modified three-dimensional digital model, obtained in step 1c), of the desired position of the teeth into a modified three-dimensional digital model of the actual position of the teeth, the transformation undertaken in this step being the inverse transformation to the transformation undertaken in step 1b), 1e) producing a three-dimensional real model of the actual position of the teeth including the at least one, integrally formed holding device on the basis of the modified three-dimensional digital model, obtained in step 1d), of the actual position of the teeth including the at least one holding device, 1f) inserting the at least one attachment element in the at least one holding device of the real model, 1g) embedding the attachment element received in the at least one holding device and a plurality of characteristic planar portions of the real model by means of a curable moulding compound, 1h) curing the moulding compound, and 1i) removing the cured moulding compound including the at least one attachment element held thereby as an auxiliary device for fastening the at least one attachment element to the assigned tooth from the real model.