Abstract: An amalgam capsule includes two chambers separated by a piston detachably formed as a part of the capsule end cover. One compartment is formed in part by a resilient flange portion of the capsule which is deformable to provide communication of the chambers and to permit a mixing of the contents of the chambers in the larger of the chambers. Delivery of the mixed amalgam is accomplished by removing a cap from one end of the capsule to expose an aperture therein, and connecting the opposite cover end of the capsule to a syringe, the plunger of which detaches the piston from the capsule cover and drives the piston through the mixing chamber to eject the amalgam therefrom.

Abstract: A dental container receives and separately stores mercury and silver ingredients until they are subsequently brought together and mixed within the container for making a ready-to-use amalgam which is directly injected from the container into a prepared tooth cavity. Visual indicators are provided on the container to advise a dental operator of the current status of the dental container.

Abstract: A ring-like adjustment member having a plurality of adjustable elements is mounted in a tooth-encircling relationship with a prepared tooth having a finish line. Each element is adjustably movable so that its leading edges may be moved toward an attachment line defined by the neck of the tooth and its immediately adjacent gingival tissue below the visible gum line. The leading edges, after adjustment, define an impression line whose contour resembles the contour of the finish and/or attachment lines. Accurate custom-made impressions of the prepared tooth may be obtained. The adjustment member may also be mounted on the prepared tooth to assist in the formation of a temporary crown, and may further be mounted as a readily removable matrix on a tooth requiring filling.