Method for modelling positions of implants in the patient's mouth in order to calculate the program for milling the structure of the prosthesis, which can be coupled onto the implants, where the operation of modelling the implants includes: a placing posts, which can be detected by X-ray, on the implants in the patient's mouth； performing a CAT scan of the patient's mouth with the posts； converting the CAT result into a three-dimensional computer model for the CAD/CAM manipulation thereof； defining the posts in the computer model； CAD/CAM modelling of the structure on the computer model with the defined posts； and generating a file containing positions and orientations for calculating the structure milling program.
