Creating a denture by using the patients mouth as an intra-oral articulator by use of an upper and/or lower dental impression tray for creating the impression of the edentulous mouth, the trays having platforms or support surfaces which magnetically hold a main frame therebetween. The orientation of the main frame is adjustable and lockable with respect to the lower tray all while within the mouth. Once the main frame is located and locked in place, artificial teeth formed with holding wax and a rearwardly extending fork are slid into a slot of the main frame and also locked. The wax holding the artificial teeth is then melted to integrate the teeth with formed respective upper and lower custom trays.