A method for detecting the position and the relative positioning on the corresponding a master model, the master model being a three-dimensional digital model of the patients mouth or the part of it involved , of the relative images in digital format (3a), of dental implants (3) on a dental arch (2), the dental arch (2) bearing a superstructures (1) coupled with the same said implants (3), the method comprising: of the type using scanning a scanbody (5) applied on each of said implants (3) and using a corresponding digital positioner scanbody reference model coupled with a digital implant (3a) of the same type as the respective implant (3a) and digital interface (4a) of said superstructure (1) to be configured, characterized in that said digital scanbody reference model is a single non-generic reference model (7) obtained by detecting the form and dimensions of said scanbody (5) directly on said scanbody (5). With respect to the known art, the method of the invention uses a single reference model, consisting of the digitalized image of the same scanbody actually used on the implant. In this way, a specific single reference model is attributed to each scanbody, and dimensional and form errors to which the methods of the known art are subject, are practically annulled. The positioning of the digital implant (3a) and digital interface (4a) on the master model are consequently always repeatable and within the tolerances allowed.