Method for modelling an individual dental prosthesis, which includes an abutment, wherein a first geometry is ascertained by a detection device, wherein an auxiliary element is affixed to at least one manipulation implant/implant, and a first data set is determined therefrom. A second data set describing a geometry having at least one manipulation implant/implant without an auxiliary element is ascertained. Using the second data set, which includes no data from auxiliary elements, or using the first and second data sets, a direction of insertion is determined by which a dental prosthesis part is to be pushed onto the abutment. A production method and a system for modelling an individual dental prosthesis and a computer-readable medium having instructions, which, when loaded into a computer, execute the methods A further method is provided for automatically determining a direction of insertion for a dental prosthesis part.
