Multiple-part dental material delivery system
AssigneeMinnesota Mining and Manufacturing Company
InventorsLarry D. Fleisher, Thomas W. Martin
Life of this patent
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Abstract
A cartridge for delivery of multiple-part dental materials comprising a) a cartridge body made from an injection moldable material comprising polyalkylene oxide homopolymer or polyalkylene oxide copolymer wherein said homopolymer or copolymer comprises a repeat unit that is ##STR1## wherein R is H or an aliphatic moiety. The cartridge body has a Burst Pressure greater than that of an otherwise identical cartridge made entirely of polypropylene, and a flexural modulus greater than 1.3.times.10.sup.3 MPa at 50% relative humidity and 23.degree. C., and b) a multiple-part dental material. The cartridge is specially adapted to be mounted in a hand-held ejector-type gun.
Claims15
A cartridge for delivery of multiple-part dental materials, said cartridge comprising
- a) a cartridge body made from an injection moldable material comprising a polymer selected from the group consisting of a polyalkylene oxide homopolymer and a polyalkylene oxide copolymer wherein said homopolymer or copolymer comprises a repeat unit that is ##STR7## wherein R is selected from the group consisting of H and an aliphatic moiety, said cartridge body having a Burst Pressure greater than that of an otherwise identical cartridge made entirely of polypropylene, and wherein the material of the cartridge body has a flexural modulus greater than 1.3.times.10.sup.3 MPa at 50% relative humidity and 23.degree. C., said cartridge body comprising a plurality of separate chambers adapted for holding separate parts of a multiple-part dental material and simultaneously dispensing same;
- and
- b) a multiple-part dental material contained within said separate chambers of said cartridge body;
- wherein said cartridge is specially adapted to be mounted in a hand-held ejector-type gun.
Dependencies are inferred from the claim text.