| 摘要 |
A dental amalgam mixing capsule including an inner capsule housed in an outer capsule. The inner capsule includes an elongated pestle telescopically extended into an open ended cap including a resilient, annular skirt formed with an annular sealing lip sized for frictional, gripping engagement with the pestle to define a storage chamber therebetween for storing a liquid component of the amalgam. The inner capsule may be made by subjecting the cap to a partial vacuum, inserting a charge of such liquid component therein, and registering one end of such pestle in sealing engagement with such sealing lip. Thus, when the assembly is returned to atmospheric pressure, the partial vacuum trapped in the cap will provide for a pressure differential across the pestle drawing it into the cap to fill the space therein. |
