Abstract: A container (10) has a base (12) on a cap (14). The container (10) has a chamber (38) for liquid. The base (12) on the cap (14) are arranged to be interengaged so as to seal hermetically the chamber (38). The base (12) and the cap (14) have multi-sided portions which interengaged to form the hermetic seal. The cap (14) has outwardly flared sides so that as the cap (14) is rotated relative to the base (12) the cap is caused to move out of the base and the hermetic seal is broken so that the contents of the chamber (38) may be accessed.

Abstract: An apparatus and method for determining the tensile strength of dental materials utilizing a mold. The dental material is placed in the mold and is adhered to a surface. The mold containing the dental material is then engaged with a pulling device which subjects the mold to a measured force to disengage the dental material from the surface. This provides a measure of the tensile strength of the dental material.

Abstract: A dental syringe including a hollow piston having threads on the inner wall thereof, and an exterior threaded rod disposable within the hollow piston and upon rotation of the rod moving the piston longitudinally for dispensing dental material from the syringe.

Abstract: An apparatus (10) for determining the adhesive strength of materials has a test rig (12) with a base plate (14). A compression plate (20) is provided above a support (18). The compression plate (20) is urged into engagement with the support (18) by means of springs (22). The compression plate (20) has a recess (30) which receives a mould (32). The support (18) contains a substrate (34) which engages with material to be tested contained in the mould (32). The application also relates to a method which involves measuring the force required to remove the mould (32) from the substrate (34).

Abstract: A container (10) for mixing and dispensing material comprises a body (12) having a main chamber (17), a dispensing nozzle (26), a liquid receptacle (16) and a plunger (18). The liquid receptacle (16) has a front portion arranged to break away upon hydraulic pressure being applied by the plunger (18) so that the plunger (18) can traverse the entire length of the body (12). This enables a charge of material in the main chamber (17) to be entirely dispensed through a frangible wall (22) into the nozzle (26). The container (10) has a compression zone with a stepped region (50) to provide limited resistance to movement for use with low viscosity material. This reduces the risk of uncontrolled extrusion of the low viscosity material.

Abstract: A liquid container (10) has an outer wall (12) to which is mounted a liquid material receptacle (18). The liquid material receptacle has an open end (20) and a closed end (24). The open end (20) of the liquid material receptacle (18) is sealed by a membrane (34). Further, the liquid material receptacle (18) tapers inwardly from the open end (20) to the closed end (24).

Abstract: A container (10) for mixing and dispensing material comprises a body (12) having a main chamber (17), a dispensing nozzle (26), a liquid receptacle (16) and a plunger (18). The liquid receptacle (16) has a front portion arranged to break away upon pressure being applied by the plunger (18) so that the plunger (18) can traverse the entire length of the body (12). This enables a charge of material in the main chamber (17) to be entirely dispensed through a frangible wall (22) into the nozzle (26). The container (10) is particularly envisaged for use in mixing and dispensing of dental materials.

Abstract: A container (10) for mixing components comprises a main body (12) defining a main chamber (17) and a liquid receptacle (16) and a plunger (18). The main chamber (17) has a distal end (26) which has an end cap (28). The main chamber (17) has a central aperture (30) sealed by a frangible membrane (38). In use, the plunger (18) causes liquid in the liquid receptacle (16) to be pushed through an internal wall (22) containing a weakened portion (24) into the main chamber (17) which contains a powder. The liquid and powder are mixed to form a paste. The paste is accessed by an applicator which breaks the frangible membrane (38). The container is especially envisaged for use in mixing of components to provide a paste for dental use.

Abstract: An apparatus and method for determining the tensile strength of dental materials utilizing a mould. The dental material is placed in the mould and is adhered to a surface. The mould containing the dental material is then engaged with a pulling device which subjects the mould to a measured force to disengage the dental material from the surface. This provides a measure of the tensile strength of the dental material.

Abstract: An apparatus (10) for determining the adhesive strength of materials has a test rig (12) with a base plate (14). A compression plate (20) is provided above a support (18). The compression plate (20) is urged into engagement with the support (18) by means of springs (22). The compression plate (20) has a recess (30) which receives a mould (32). The support (18) contains a substrate (34) which engages with material to be tested contained in the mould (32). The application also relates to a method which involves measuring the force required to remove the mould (32) from the substrate (34).

Abstract: A dental cartridge (10) for dispensing a dental cartridge substance (26). The dental cartridge (10) has a dispensing region (18) which is of substantially constant internal diameter. The dispensing region (18) is at least partially curved. A deformable piston (24) is provided and arranged to pass through the curved portion of the dispensing region (18).

Abstract: A dental cartridge (10) comprising a container portion (14) and a nozzle (12). The container portion (14) includes an aperture (34) having a first end (38) adjacent the interior of the container portion (14) and a second end (36) adjacent the exterior of the container portion (14). The nozzle (12) is received within the second end (36) of the aperture (34) and the first end (38) of the aperture (34) is arranged to prevent the nozzle (12) passing therethrough. The nozzle (12) is then fixed within the aperture (34).

Abstract: A dental material container comprising a body including a first chamber and a second chamber separated by a first wall member. A dispensing member is provided separated from the second chamber by a second wall member. Also provided is a means for applying pressure to dental material contained within the first chamber. Actuation of the means for applying pressure causes dental material within the first chamber to be expelled through the first wall member and mix with dental material in the second chamber. Further actuation of the means for applying pressure causes the mixed dental material to be expelled through the second wall member to the dispensing member.