Abstract: A device for storing and dispensing a flowable dental composition, comprising: a first layer and a second layer, wherein the first layer and second layer form a first chamber for containing a flowable dental composition, a transition zone, and a second chamber; an applicator retained within the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the device includes an inactive state and an active state.

Abstract: A syringe for dispensing a flowable material. The syringe has a cartridge with a cartridge front end and at least a first dispensing nozzle arranged at the cartridge front end. The syringe further has closure for openably closing the first dispensing nozzle. The closure includes a cap and at least a first seal. The cap is telescopically placeable on the cartridge front end. The closure or the cartridge has a first magnet for establishing a magnetic attraction between the closure and the cartridge. In a situation in which the closure is placed on the cartridge front end, the closure and the cartridge can be positioned in a sealing position in which the first seal spaces the cap and the cartridge front end away from each other against a magnetic attraction that urges the cap and the cartridge toward each other.

Abstract: A cartridge and a piston for storing and dispensing a two-component dental material. The cartridge and the piston have a cross-section which substantially correspond to a D-shape in which the perimeter of the D-shape is defined by a plurality of circle segments only. At least two of the circle segments are based on different radii. The invention helps maximizing the time period over which a dental material can be stored in the compartment.

Abstract: A method of layerwise building up an object from at least a first and a second light hardenable resin on a 3D printing device, and a 3D printing device that is configured to perform such a method. The 3D printing device has a build platform on which the object can be built up, a light-transmissive carrier comprising a plurality of recesses and a light projector for projecting a light-pattern through the carrier.

Abstract: A syringe assembly being assembled from a syringe for dispensing a dental or medical substance, and a protective cover. The protective cover has a geometrically determined, non-foldable tubular protective shaft. The syringe has a cartridge having an outlet for the substance. Further, the cartridge and the protective cover are assembled with the cartridge being received within the protective shaft. The syringe further comprises a dispensing tip that is connected to the outlet for dispensing the substance from the dispensing tip. A first seal is provided between the dispensing tip and the outlet, and a second seal is provided between the dispensing tip and the protective shaft.

Abstract: A syringe for storing and dispensing a first and a second component of a material. The syringe has a first chamber containing the first component and a second chamber containing the second component. The syringe further has an empty blank chamber that spaces the first and second chamber from each other.

Abstract: A syringe for dispensing a flowable material. The syringe has a cartridge with a cartridge front end and at least a first dispensing nozzle arranged at the cartridge front end. The syringe further has closure for openably closing the first dispensing nozzle. The closure includes a cap and at least a first seal. The cap is telescopically placeable on the cartridge front end. The closure or the cartridge has a first magnet for establishing a magnetic attraction between the closure and the cartridge. In a situation in which the closure is placed on the cartridge front end, the closure and the cartridge can be positioned in a sealing position in which the first seal spaces the cap and the cartridge front end away from each other against a magnetic attraction that urges the cap and the cartridge toward each other.

Abstract: A mixer assembly with a static mixing element arranged within a mixing channel. The mixer assembly has an inlet end, for receiving components of a substance and a dispensing end for dispensing a mixture from the components. The inlet end comprises for each component an inlet and an associated non-return valve. Each of the inlets is connectable for fluid communication with the mixing channel via the associated non-return valve.

Abstract: A method of layerwise building up an object from at least a first and a second light hardenable resin on a 3D printing device, and a 3D printing device that is configured to perform such a method. The 3D printing device has a build platform on which the object can be built up, a light-transmissive carrier comprising a plurality of recesses and a light projector for projecting a light-pattern through the carrier.

Abstract: A dispenser has a bottle (2) and a closure (3) for the bottle (2). The closure (3) has abase (4) forming a dispensing outlet (6) and a flip-cap for openably closing the dispensing outlet (6). The base (4) is attached on the bottle (2). The dispenser (1) further having a hinge (7) which interconnects the flip-cap and the base (4) for swiveling the flip-cap relative to the base (4) between a closed position, in which the flip-cap closes the outlet (6), and an open position in which the outlet (6) is open. The hinge (7) forms a swivel axis. The closure (3) forms a first end (18, 19) in a direction toward the flip-cap and a second end (18, 19) in a direction toward the base (4). The closure (3) in an area between the hinge-level plane and the second end (18, 19) forms an outer surface circumferentially around the longitudinal axis which is at least partly provided by an outer surface of the base (4) and an outer surface of the flip-cap.

Abstract: A flip-top cap (83) for dispensing a flowable dental substance which is monolithically formed of a thermoplastic material. The flip-top cap has a base (4) from which a dropper nose (8) protrudes and a closure that is hingedly connected to the base for pivoting between a closed position, in which the closure closes the dropper nose, and an open position, in which the dropper nose is uncovered from the closure. The closure has an end wall (20) forming an outward planar end face (21) and, opposite thereof, an inner face (22) that has a sealing bulge (23). The end wall forms a first thickness (T1) between the vertex of the sealing bulge and the end face and a second thickness (T2) between a marginal area adjacent the sealing bulge and the end face. The ratio between the first and second thickness is between 1.4 and 1.6.

Abstract: A method of monolithically forming a flip-top cap from a thermoplastic material and a flip-top cap for dispensing a flowable dental substance. The flip-top cap has a base from which a dropper nose protrudes and a closure. The base and the closure are hingedly connected to each other by a living hinge for pivoting between a closed position, in which the closure closes the dropper nose, and an open position, in which the dropper nose is uncovered from the closure. The method has the steps of injection molding the flip-top cap in the open position in an injection molding device and positioning the closure and the base toward the closed position while the flip-top cap is still the injection molding device.

Abstract: A system which has a static mixer and which contains a dental material. The static mixer has a mixing barrel that extends along a longitudinal axis and, accommodated therein, a cascade of mixing elements. Mixing elements have an outer diameter D of between 1.5 mm and 1.6 mm. The barrel has an inner diameter corresponding to the outer diameter of the mixing elements. The system helps minimizing any residual dental material in the mixer and minimizing forces for extruding the dental material through the mixer.

Abstract: A cartridge and a piston for storing and dispensing a two-component dental material. The cartridge and the piston have a cross-section which substantially correspond to a D-shape in which the perimeter of the D-shape is defined by a plurality of circle segments only. At least two of the circle segments are based on different radii. The invention helps maximizing the time period over which a dental material can be stored in the compartment.

Abstract: A process for taking a dental impression and/or conducting a dental retraction. The process includes the steps of: (a) providing a composition (A) having the consistency (a1), composition (A) including curable components, and a catalyst suitable to initiate or catalyze the curing of the curable components, composition (A) being contained in a device, (b) applying a portion (I) of composition (A) with a consistency (a2) into the sulcus of a tooth, (c) applying a portion (II) of composition (A) with a consistency (a1) in contact with composition (A) applied in step (b), (d) removing portion (I) together with portion (II) of composition (A) from the surface of the tooth, consistency (a2) being higher than consistency (a1).

Abstract: A capsule for mixing and dispensing a dental material which has a capsule body and a cavity extending into the capsule body. The cavity is closed by a liquid container. The liquid container has a cartridge forming a channel that extends between a front opening and a rear opening of the cartridge. Further the cartridge has a front foil closing the front opening and a rear foil closing the rear opening. The front foil is attached at the cartridge along a closed path circumferentially around the front opening. The front foil and the cartridge in at least a partial area of the circumferential path are separably sealed with each other, thus defining an openable valve through that path. The capsule has further a piston received in the channel of the cartridge and arranged such that the liquid is enclosed in the cartridge between the front foil and the piston. The capsule facilitates the preparation of a two-component dental material.

Abstract: A dispenser has a bottle (2) and a closure (3) for the bottle (2). The closure (3) has abase (4) forming a dispensing outlet (6) and a flip-cap for openably closing the dispensing outlet (6). The base (4) is attached on the bottle (2). The dispenser (1) further having a hinge (7) which interconnects the flip-cap and the base (4) for swiveling the flip-cap relative to the base (4) between a closed position, in which the flip-cap closes the outlet (6), and an open position in which the outlet (6) is open. The hinge (7) forms a swivel axis. The closure (3) forms a first end (18, 19) in a direction toward the flip-cap and a second end (18, 19) in a direction toward the base (4). The closure (3) in an area between the hinge-level plane and the second end (18, 19) forms an outer surface circumferentially around the longitudinal axis which is at least partly provided by an outer surface of the base (4) and an outer surface of the flip-cap.