A coupling assembly, particularly for dental implants, having at least one pin, which can be coupled rigidly to a bone portion, and a supporting element, which can be associated with a prosthesis. The pin has, at its end portion that lies opposite the one designed for connection to the bone portion, a protruding tab that can be accommodated by elastic forcing in a respective cavity formed in the supporting element so as to produce a stable coupling configuration between the pin and the supporting element. The tab is shaped like a substantially equatorial portion of a sphere with an outer lateral surface adapted to abut, with at least one part thereof, against the internal side wall of the cavity, to determine stable coupling configuration.
