Abstract: A dental capsule for mixing and dispensing dental materials comprised of at least three components, the capsule including: a plunger; a first open-ended liquid receptacle adapted to receive the plunger; a second open-ended liquid receptacle adapted to receive the first liquid receptacle; and a main body with a proximal end, a distal end, a chamber open at the proximal end and an aperture in the distal end. The chamber is adapted to receive the second liquid receptacle, and the dental capsule is adapted to mix various components of the dental materials and form a dental paste for dispensing.

Abstract: A container 10 for mixing and dispensing of material having a liquid receptacle 14 and a plunger 18. The receptacle 14 has a front portion 36 and the plunger 18 has a forwardly projecting sharp protrusion 42 having a shaft 72 which terminates in a sharp outer end 78, 82. Upon the plunger 18 being depressed the sharp protrusion 42 pierces a front portion 36 of the liquid receptacle 14 and the liquid in the receptacle 14 is pushed hydraulically through the front portion 36 into the main chamber 17. Thus the liquid contacts material in the main chamber 17 to form a mixture. The plunger 18 can continue to be depressed so as to break the front portion 36 of the liquid receptacle 14 away and then push the material in the main chamber 17 towards a dispensing nozzle 26. The main chamber 17 has a frangible membrane 22 at a distal end 13 thereof which is hydraulically broken by pressure applied from the material in the main chamber 17 so that the material can be dispensed from the container 10.

Abstract: A mixing and dispensing container for mixing and dispensing dental materials. The mixing and dispensing container includes: a plunger; an open-ended liquid receptacle adapted to receive the plunger; and a main body with a proximal end, a distal end, a chamber open at the proximal end and an aperture in the distal end. The chamber is adapted to receive the liquid receptacle. The dental capsule mixes various components of the dental materials and forms a dental paste for dispensing. The container is especially envisaged for use in mixing of components to provide a paste for dental use.

Abstract: A container 10 for mixing and dispensing of material having a liquid receptacle 14 and a plunger 18. The receptacle 14 has a front portion 36 and the plunger 18 has a forwardly projecting sharp protrusion 42 having a shaft 72 which terminates in a sharp outer end 78, 82. Upon the plunger 18 being depressed the sharp protrusion 42 pierces a front portion 36 of the liquid receptacle 14 and the liquid in the receptacle 14 is pushed hydraulically through the front portion 36 into the main chamber 17. Thus the liquid contacts material in the main chamber 17 to form a mixture. The plunger 18 can continue to be depressed so as to break the front portion 36 of the liquid receptacle 14 away and then push the material in the main chamber 17 towards a dispensing nozzle 26. The main chamber 17 has a frangible membrane 22 at a distal end 13 thereof which is hydraulically broken by pressure applied from the material in the main chamber 17 so that the material can be dispensed from the container 10.

Abstract: A dental treatment tray device comprising a horseshoe shaped insert with peripheral front and rear walls 16 defining a trough shaped device 12 in cross section with an Intermediate base layer. The front and rear walls 14 and 15 and the base layer are lined by means of gauze impregnated with dental treatment material 18.

Abstract: A container 10 for mixing and dispensing of material having a liquid receptacle 14 and a plunger 18. The receptacle 14 has a front portion 36 and the plunger 18 has a forwardly projecting sharp protrusion 42 having a shaft 72 which terminates in a sharp outer end 78, 82. Upon the plunger 18 being depressed the sharp protrusion 42 pierces a front portion 36 of the liquid receptacle 14 and the liquid in the receptacle 14 is pushed hydraulically through the front portion 36 into a main chamber 17. Thus the liquid contacts material in the main chamber 17 to form a mixture. The plunger 18 can continue to be depressed so as to break the front portion 36 of the liquid receptacle 14 away and then push the material in the main chamber 17 towards a dispensing nozzle 26. The main chamber 17 has a frangible membrane 22 at a distal end 13 thereof which is hydraulically broken by pressure applied from the material in the main chamber 17 so that the material can be dispensed from the container 10.

Abstract: A dental capsule (10) for storing a dental powder component (13) and a liquid component (28) in separated condition in which the powder component (13) is contained in a chamber (17) and the liquid component (28) is contained in a pouch (18). The capsule (10) comprises a freely movable member (36) arranged to rupture the pouch (18) upon vibration of the capsule (10) so that the liquid component (28) admixes with the powder component (13) to form a dental paste (38). The compartment of the capsule has a manually removable cap (14) to enable the dental paste (38) to be retrieved for use.

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: A container (10) for mixing and dispensing material includes 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 material.

Abstract: A liquid container (10) has a base (12) and a cap (14) which interengage to form a hermetically sealed chamber (42). The cap (14) has a curved outer wall (18) and the base has a curved inner wall (36). The outer and inner walls (18, 36) have perspective non-circular portions and are of complementary shape. The cap (14) is able to be rotated axially relative to the base (12) by means of a handle (24) so that the outer and inner curved walls (18, 36) interact such that the cap (14) is released from the base (12) upon axial rotation thereof and the hermetic seal is broken.

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 comprising a body (12) having a main chamber (17), a dispensing nozzle (26), a liquid receptacle (14) and a plunger (18). The liquid receptacle (14) has a side wall (37) and a front wall portion (36) which is caused to break away from the side wall under pressure being applied by a plunger (18) so that the plunger and front wall portion can traverse the entire length of the body (12). This enables a charge of material in the main chamber (17) to be dispensed through a frangible wall or membrane (22) into the nozzle (26). The container 10 has a compression zone with a stepped region (50) for providing limited resistance to movement of the plunger and broken away end wall for use with low viscosity material for reducing the risk of uncontrolled extrusion of low viscosity material.

Abstract: A process for producing a particulate dental filler in which a dental particulate inorganic material is admixed with a curable organic monomeric material containing acrylate groups to produce a suspension in a liquid. The suspension is spray dried to produce an atomized powder and the monomeric material is cured.

Abstract: A container (10) for mixing components, the container including a main body (12) defining a main chamber (17), a liquid receptacle (16), and a plunger (18). The main chamber has a distal end (26) which has an end cap (28). The main chamber also includes a central aperture (30) sealed by a frangible membrane (38). In use, the plunger causes liquid in the liquid receptacle to be pushed through an internal wall (22), having a weakened portion (24) therein, into the main chamber to mix the liquid with a powder contained in the main chamber. The liquid and powder are mixed to form a paste that is accessed by an applicator which is used to break the frangible membrane (38). The paste is preferably of the type used in dentistry.

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: 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).