Abstract: A fastening system for a dental implant, the fastening system comprising: a locking element comprising a central throughgoing aperture, the aperture having a first distal portion, and a second proximal portion, the second proximal portion having a reduced inner diameter with respect to the first distal portion; a dental superstructure provided with a cavity for receiving the locking element, the cavity having a distal portion and a proximal portion separated by a shoulder, and a fastening element receivable within the cavity and the aperture, the fastening element being substantially restricted from distal displacement by the shoulder of the cavity.