The invention relates to a cap for removable dental prosthesis, a removable prosthesis and a process for the production of a removable prosthesis the cap for removable dental prosthesis is suitable to be anchored by one or more implants which consist of an artificial root (1) and an abutment (4), said cap (6) being adapted to be received in the prosthesis (8) to be fit on said abutment (4) for defining a stable but removable constraint which allows the detachment of the prosthesis from the abutment the cap is provided with a threaded outer surface (68).