The invention relates to a prosthetic attachment comprising a support piece (1) which can be fixed in a dental implant (2) and a mounting assembly which can be coupled to a prosthetic structure (3), wherein the joint between the support piece (1) and the mounting assembly is a ball-and-socket type joint. The support piece (1) includes a substantially spherical connection section (11) provided with radially distributed flexible sectors. The mounting assembly comprises a primary element (4) with a substantially spherical cavity and provided with a threaded through hole (41) wherein a screw (5) with a spherical head (52) is inserted. Thus, the spherical head can be introduced into the inner region of the connection section of the support piece and the wall that forms the substantially spherical cavity of the primary element (4) can be adjusted to partially and externally surround the connection section of the support piece (1), such that the mounting assembly is rotatively coupled.
