The invention relates to a computer-implemented method for generating a 3-D data model (10) of a jaw (12, 14) of a patient, said 3D data model (10) of the jaw (12,14) at least one 3D part data model (16) the crowns (K) comprises the that are available in a predetermined position of the teeth teeth (Z) of the jaw (K) and a 3D data model part of the gums. According to the invention are in the course of carrying out the process a time at which the 3D Datenrvrodell the jaw (12, 14) free of any actual gums (Fis) Of the patient repräsentierendem 3D part data model (18). Then a 3D part data model of a fictitious gums based on at least the 3D part model data (16) of the tooth crowns (K) created and added to the 3D data model of the jaw (12, 14).
