Abstract: A trigger actuated rotary dental amalgam dispenser is provided with a material distribution shell within which a transport carriage is rotated in a concave depression under the control of a trigger actuator. The shell is constructed with liquid conduit channels to carry mercury from a reservoir atop the shell to a measuring chamber in the carriage. Upon actuation of the trigger, a measuring chamber, otherwise held in communication with the mercury reservoir by a spring bias on the trigger, is rotated relative to the shell so that the mercury in the measuring chamber flows through an outlet channel in the shell and is discharged through a dispensing well. Concurrently, a slide with a silver receptacle tray is repositioned to receive another tablet of silver, and dispense this tablet into the dispensing well when the trigger is released and the biasing spring returns the slide to registration with the dispensing well.

Abstract: A trigger-actuated sliding dental amalgam dispenser is provided with a material distribution shell within which a transport carriage is longitudinally reciprocated under the control of a trigger actuator. Liquid conduit channels in the shell carry mercury from a reservoir above the shell to a measuring chamber in the carriage. Upon actuation of the trigger, the measuring chamber, otherwise held in communication with the mercury reservoir by a spring bias on the trigger, is reciprocated relative to the shell to that the mercury in the measuring chamber is discharged into a dispensing well. Concurrently, a slide with a silver receptacle tray is repositioned to receive another tablet of silver from a tablet dispensing cartridge positioned above the material distribution shell. When the trigger is released, the tray carries the silver tablet into vertical registration with the dispensing well to drop the tablet into the well.

Abstract: A dental amalgam dispenser is provided with a housing having an integrally formed funnel to prevent mercury leakage and with a rectangular plastic carriage framework reciprocal within the housing to carry the silver and mercury from separate inlet ports to the funnel for mixing. The carriage includes a pair of rails lying on either side of the inlet and outlet ports to prevent twisting of the carriage within the housing. A mercury reservoir is located atop the housing and is equipped with a micropore filter which prevents the formation of a vacuum in the reservoir chamber. The fineness of the openings in the filter at the same time prevents the passage of mercury therethrough.

Abstract: A dental alloy container is provided with an insert which includes a concave surface that is directed against the blind end of a receptacle to define an isolated, enclosed cavity, separate from the larger enclosure of the container. Access between the larger enclosure and the separate cavity normally exists, except when a threaded barrel is used to force the insert against the blind receptacle end to isolate the cavity. A cap on the container seals the larger enclosure. A drop of mercury can thereby be placed in the isolated cavity and maintained separate from a quantity of silver until it is desired to mix the mercury and silver, immediately prior to use, to form a dental alloy.