Time-Indicating Syringe Mixing Devices And Related Methods For Storing and Dispensing Two-Part Dental Compositions

A time-indicating mixing, storing, and dispensing syringe system for use with a two-part dental composition, that when mixed together, yields a time-sensitive dental composition having a shelf-life significantly less than the shelf-life of first and second components before they are mixed, the system comprising:

• a first pre-dosed composition pre-packaged so as to be contained in a first syringe having a barrel with a first plunger slidable within the first barrel;
• a second pre-dosed composition pre-packaged so as to be contained in a second syringe having a barrel, with a second plunger slidable within the second barrel;
• the first and second plungers being operable so that by first sliding the first plunger into the first syringe barrel the first pre-dosed composition is introduced into the second syringe barrel so that it contacts the second pre-dosed composition, the two compositions thereafter being either further mixed using one or both syringe barrels, or else applied in a dental procedure by expressing the mixed contents from the second syringe barrel;
• and
• a plurality of selectively removable plugs disposed on at least one of:
• i) a proximally disposed head of the first plunger;
• ii) a proximally disposed head of the second plunger;
• iii) a proximally disposed flange of the first syringe barrel;
• or
• iv) a proximally disposed flange of the second syringe barrel;
• such that a practitioner can selectively remove one or more of the plurality of plugs, the removed plugs designating at least:
• a month;
• and
• a day or a week;
• so as to thereby provide an irreversible indicator of the mixing date by reference to the removed plugs.