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.

A dynamic mixer, useful for mixing components of viscous compounds, in particular for components of dental impression compounds, and use thereof, the mixer having a mixing tube that contains a drivable rotor and that has on one end an end wall having at least two inlet openings for components, and at the other end an outlet opening for the mixture thereof. The rotor has a rotor disk having at least one entraining element that faces the end wall, and at least one rotor disk opening for the components to pass through to the side of the rotor disk that is remote from the end wall. At least one mixing element is arranged on the rotor hub between the rotor disk and the outlet opening. At least one projecting pin is arranged on the end wall toward the rotor disk, and the at least one entraining element has at least one recess for the at least one pin.

Mixing capsules and methods are provide and comprise a first chamber to receive a composition A and a second chamber to receive a composition B, wherein the first chamber and the second chamber are arranged rotatably about the longitudinal axis of the mixing capsule, the first chamber comprising a first opening, the second chamber comprising a second opening, the first opening and the second opening being arranged perpendicularly to the longitudinal axis and plan-parallelly to each other and/or perpendicularly spaced, the first opening and the second opening being arranged incongruently to each other in a storage position, the first opening and the second opening being arranged congruently to each other in a handling position.

A three-component mixing apparatus and a three-component mixing adhesive kit, which allow anyone to easily and uniformly mix three kinds of drugs in mixing a three-component adhesive used in, e.g., surgical procedure (or treatment) or dental procedure (or treatment), includes a syringe filled with a first drug; a plunger; and an infusion-needle connector having a connecting part for a second drug container and a connecting part for a third drug container and a confluent path formed on a base end part. The first drug, the second drug and the third drug are mixed in the syringe by removably attaching the infusion-needle connector to a discharge opening of the syringe, the second drug container to its connecting part and the third drug container to its connecting part and then pulling the plunger inserted into the syringe to introduce the second drug and the third drug into the syringe.

A hardenable (e.g. dental) compositions is described comprising an encapsulated material. The encapsulated material comprises a basic core material and an inorganic shell material having certain viscosity criteria. Also described are dispensing devices and kits are described comprising a hardenable (e.g. dental) composition comprising a liquid material and an encapsulated material wherein the encapsulated material comprises a basic core material and an inorganic shell material comprising a metal oxide surrounding the core. The dispensing devices and kits can facilitate the methods of applying the hardenable composition. The hardenable or hardened (e.g. cured) composition can provide various technical effects such as a delayed release of a basic core material, a delayed increase in basicity, promoting remineralization of a tooth or bone structure, and increasing the average alkaline phosphatase (ALP) activity of pulp cells. In some embodiments, the composition is a dental (e.g. sealant) composition for application to a tooth structure.

A dynamic mixer head has a connecting cover, a rotor and a housing. The connecting cover has a rotor opening. The rotor has a first rotor axle mounted in the rotor opening and a mixing rotor connected with the first rotor axle. The mixing rotor has multiple vaned inner rotors with quarter-circle shaped multiple vanes and a vaned front rotor opposite to a second rotor axle of the mixing rotor with multiple vanes complementary to the multiple vanes of the multiple vaned inner rotors. The housing mounted to the connecting cover has at least two grooves disposed on the circular partition. Each of the at least two grooves has a spacer along each of the at least two grooves. The dynamic mixer head can enhance the mixing effect of two different component substances during rotation.

The mixing device for mixing a powder with a pressurized gas, comprising a mixing chamber (20) with an inlet area (22), which has at least one inlet opening (24), by way of which powder and/or pressurized gas and/or a mixture thereof may be introduced into the mixing chamber (20), and at least one outlet area (26), which is designed for withdrawing from the mixing chamber (20) a main flow (HR) of a gas or powder or a powder and gas mixture directed along the mixing chamber (20) which essentially extends from the inlet area (22) to the outlet area (26), characterized in that a regulating device (10) is arranged along and/or in continuation of the main flow (HR), regulating the main flow (HR) of the gas or powder or powder and gas mixture.

A syringe for multi-component materials includes a mixer housing, a mixing element, a multi-component cartridge and a mixing head, the mixing head being arranged at least partly within the mixer housing and adjacent to the multi-component cartridge. The mixing head is arranged moveable in an axial direction of the syringe between at least two positions, the at least two positions including a sealed position and a dispensing position. The axial movement of the mixing head is brought about by rotation of at least a part of the mixer housing relative to the multi-component cartridge. The mixing head is axially displaced in a direction opposite to a dispensing direction on a displacement of the mixing head from the sealed position into the dispensing position.

A hardenable (e.g. dental) compositions is described comprising an encapsulated material. The encapsulated material comprises a basic core material and an inorganic shell material having certain viscosity criteria. Also described are dispensing devices and kits are described comprising a hardenable (e.g. dental) composition comprising a liquid material and an encapsulated material wherein the encapsulated material comprises a basic core material and an inorganic shell material comprising a metal oxide surrounding the core. The dispensing devices and kits can facilitate the methods of applying the hardenable composition. The hardenable or hardened (e.g. cured) composition can provide various technical effects such as a delayed release of a basic core material, a delayed increase in basicity, promoting remineralization of a tooth or bone structure, and increasing the average alkaline phosphatase (ALP) activity of pulp cells. In some embodiments, the composition is a dental (e.g. sealant) composition for application to a tooth structure.

A dynamic mixer head has a cover, a housing, and a rotor. The cover has a first base board, two inlets, and a holding cylinder. A rotor holding channel is formed in the holding cylinder and a sealing portion protrudes from an inner wall surface of the rotor holding channel. The housing is mounted on the cover and has a second base board, a mixing cylinder, and an inner channel. The inner channel is formed in the mixing cylinder and fluidly communicates with an outlet. The rotor is rotatably disposed in the inner channel and has a rotor axle and a mixing rod. The rotor axle is disposed through the rotor holding channel, contacts and is surrounded by the sealing portion. The mixing rod has multiple first vanes. The dynamic mixer head does not need two sealing structures and tight fitting of the rotor and the holding cylinder.