| 摘要 |
Time-indicating syringe mixing systems for mixing, storing, and dispensing a two-part dental composition that becomes less stable upon mixing including a first plunger comprising an elongate stem and a plug at a distal end of the elongate stem, a hollow first chamber configured to contain a first component, a hollow second chamber configured to contain a second component, means for providing a region of increased space between an outside surface of the elongate stem of the first plunger and an interior surface of a wall defining the hollow first chamber, and means for protecting a recorded mixing and/or expiration date from damage or alteration. The inventive syringe mixing systems may be configured as syringe-in-syringe systems and/or syringe-to-syringe systems.
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