A device for supporting, on a respective support (5, 22, 27) having a base (6, 24, 18), at least one preformed element (1), having a shoulder (9) provided protruding from the base thereof, of single superstructures (2) for dental prostheses. It comprises a stem or an insert (8,19) having an interface (26, 21) for supporting said preformed element (1) on the above-mentioned base (6, 24, 18) of said support (5, 22, 27), means being further provided for holding said element (1) on said base (6, 24, 18). With respect to known supporting devices, that forming object of the present invention, offers the advantage of not requiring the previous formation of a hole for the insertion channel of the screw in the preformed element. Superstructures can therefore be prepared, in which the channel for anchoring screw to the implant is produced according to the design specifications and consequently with a variable angulation, in relation to the final position of the channel in the mouth, as established by the doctor. The visible exposure of the closing material of the above-mentioned channel can therefore be avoided, with a considerable aesthetic benefit.La présente invention concerne un dispositif de support, sur un support respectif (5, 22, 27) comportant une base (6, 24, 18), dau moins un élément préformé (1), comportant un épaulement (9) disposé en saillie à partir de sa base, de superstructures simples (2) pour prothèses dentaires. Il comprend une tige ou un insert (8, 19) comportant une interface (26, 21) de support dudit élément préformé (1) sur la base susmentionnée (6, 24, 18) dudit support (5, 22, 27), des moyens étant en outre prévus pour le support dudit élément (1) sur ladite base (6, 24, 18). Par rapport à des dispositifs de support connus, ledit objet de formage de la présente invention offre lavantage de ne pas nécessiter de formation au préalable dun trou pour le canal dinsertion de la vis dans lélément préformé. Des superstructures peuvent ainsi être préparées, d
