The invention relates to an interface element for dental prostheses, consisting of a cylindrical hollow body comprising: two different segments, namely a lower segment (a) having a larger outside diameter and an upper segment (b) having a smaller outside diameter, said segments being provided with external circular retaining grooves (2) and an internal seat (4) for the head of the screw (5) that secures same to the implant； and a lower base (6). The interface element is characterised by having a lateral cavity (7) spanning the height of the upper segment (b), defining a lateral opening for the inclined entry of the screw (5) and screwdriver (8), the height and width of said opening permitting an inclination of up to 30º, with respect to the axial axis of the cylindrical body and the lateral freedom of movement of the screwdriver (8) by as much as 90º. Also provided are two flat regions (9) in diametrically opposing points of the external surface of the larger-diameter lower segment (a) of the circular body.
