Cartridge for storing, discharging and applying a dental compound

The cartridge as claimed in one of the preceding claims, characterized in that,

• at 23° C., the plastic of the cannula (3) has a bending modulus of from 2.2 to 2.9 GPa, preferably of from 2.3 to 2.6 GPa, preferably of about 2.4 GPa, in accordance with DIN EN ISO 178:2013.

The cartridge as claimed in one of the preceding claims, characterized in that

• the outlet opening (5) and the actuator opening (6) of the hollow chamber (4) lie on a common axis (7), wherein the cannula (3) preferably extends parallel to or along the axis (7) in the initial state.

The cartridge as claimed in one of the preceding claims, characterized in that

• the cannula (3) is formed integrally with the container (2), wherein the cannula (3) is preferably produced together with the container (2) by 1-component or multicomponent injection molding.

The cartridge as claimed in one of the preceding claims, characterized in that

• the cannula (3) and/or the container (2) is made from a thermoplastic, preferably a substantially amorphous thermoplastic copolymer, terpolymer and/or quadropolymer, further preferably a partially cross-linked, substantially amorphous thermoplastic copolymer, terpolymer or quadropolymer, further preferably from acrylonitrile butadiene styrene (ABS).

The cartridge as claimed in one of the preceding claims, characterized in that

• the cartridge (1) is designed for use with a standard dispenser.

The cartridge as claimed in one of the preceding claims, characterized in that

• a piston (8) is provided in the hollow chamber (4), said piston being arranged in such a way in the initial state of the cartridge (1) that a dental compound can be accommodated in the hollow chamber (4) between the piston (8) and the outlet opening (5).

The cartridge as claimed in one of the preceding claims, characterized in that

• the outlet opening (10) of the cannula (3) has an inside diameter of from 0.4 mm to 2 mm, preferably 0.6 mm to 0.9 mm, wherein the outlet end of the cannula (3) is preferably rounded, preferably with a radius of from 0.5 mm to 1.5 mm.

The cartridge as claimed in one of the preceding claims, characterized in that

• the flexible region of the cannula (3) has a length of from 15 mm to 25 mm, preferably of about 20 mm.

The cartridge as claimed in one of the preceding claims, characterized in that

• the container (2) is substantially tubular, has an outside diameter of from 6 mm to 7 mm, preferably of from 6.2 mm to 6.6 mm, and has a wall thickness of at least 0.5 mm, preferably at least 0.9 mm and/or a wall thickness of less than 1.5 mm, preferably less than 1.0 mm.

The cartridge as claimed in one of the preceding claims, characterized in that

• the container (2) has an annular enlargement of the outside diameter (9) in the region of the outlet opening (5) and/or of the actuator opening (6).

The cartridge as claimed in one of the preceding claims, characterized in that

• the hollow chamber (4) of the container (2) is filled substantially by a pasty dental compound, wherein the dental compound is preferably an astringent retraction paste.