Abstract: The invention relates to a reusable syringe with a syringe body for receiving an ampoule. At the front end of the syringe body there is an opening which defines an axis along which a needle can be inserted. A plurality of holding segments are arranged around this axis and engage behind a needle carrier in the longitudinal direction. According to the invention, a holding segment designed as a thread part is movable in the radial direction. The invention further relates to a system composed of a reusable syringe, a needle carrier, and a container for used needles. Moreover, the invention includes an associated method for connecting and releasing a needle of a reusable syringe. The movable holding segment facilitates the release of the threaded connection of the needle carrier from the syringe body and makes the reusable syringe safer to use.

Abstract: A syringe comprising a cylinder and a plunger arranged in the latter has a sealing element which, with a contact region, abuts an inner wall of the cylinder and seals an annular gap between the plunger and an inner wall of the cylinder. The contact region has a front section which, in the rest state, abuts the inner wall of the cylinder with an abutment pressure. The plunger is connected to the sealing element in such a way that the sealing element does not follow an initial movement of the plunger out of the rest state and such that the sealing element follows a continued movement of the plunger. The abutment pressure between the sealing element and the inner wall in the front section of the contact region decreases during the initial movement. With the syringe, less force is required in order to overcome the static friction between the sealing element and the inner wall of the cylinder.

Abstract: The invention relates to a dispensing container for a dental compound. The dispensing container comprises a chamber (15), a discharge tip (16) and a channel (17), which extends from the chamber (15) as far as a channel opening (18) arranged at the front end of the discharge tip (16). The discharge tip (16) has a jacket surface (23) tapering towards the front end. A cap (20) is provided which has an inner surface adapted to the jacket surface (23) of the discharge tip (16). According to the invention, the inner surface of the cap (20) has a plurality of guide webs (24). The invention also relates to a cap for a dispensing container of this kind. The dispensing container according to the invention reduces the likelihood of the dental compound being contaminated by particles.

Abstract: The invention relates to a filling device (1) comprising a first component (2) and a second component (3). The first component (2) comprises a dosing cylinder (20) having a high-viscosity material (4) arranged therein. The second component (3) comprises a workpiece carrier (30) and a receiving carrier (31). The receiving carrier (31) is moveably connected to the workpiece carrier (30). The movement v of the receiving carrier (31) during the filling process is determined by both the dynamic pressure exerted by the composite (4) and by a counterforce G generated by a proportional pneumatic unit (35).

Abstract: A composite capsule for receiving and dispensing a dental compound. The composite capsule has a receiving space, which is surrounded by a capsule wall and which extends between a discharge opening and a receiving opening, wherein the discharge opening is arranged at a front end of the receiving space, and the receiving opening is arranged at a rear end of the receiving space. The composite capsule comprises a support face, which protrudes outward in relation to the capsule wall and which is oriented in the direction of the front end. The support face is interrupted by a thread recess. By way of the thread recess, the composite capsule can be connected to a storage container, in order to introduce a desired amount of dental compound into the composite capsule.

Abstract: An application device for dental compositions. At the rear end, the application device is provided with a connection for a discharge container. A channel extends from the connection to a channel opening arranged at the front end. Flat protrusions are formed at the front end, which enclose therebetween a receiving space for the dental composition. Using the receiving space, the excess dental composition can be taken up again and removed.

Abstract: A capsule for receiving and delivering high-viscosity dental materials has a housing which defines an interior chamber. The housing and the interior chamber have a first section, a transition area, and an exit nozzle. The interior chamber of the transition area tapers continuously towards its second end. The interior chamber of the transition area is defined by the outer surfaces of an oblique truncated cone with an opening angle of approximately 55°.

Abstract: A dispensing container for dental compound, wherein said dispensing container comprises a housing, on the inside of which a slide surface is formed that is intended for engagement with a plunger. The housing encloses an interior and is provided with an outlet channel. A portion of a needle is inserted into the outlet channel. A gap is present between the circumference of the needle and the outlet channel. An adhesive is introduced into the gap. A method also produces a dispensing container of this kind.

Abstract: A capsule for receiving and delivering high-viscosity dental materials has a housing which defines an interior chamber. The housing and the interior chamber have a first section, a transition area, and an exit nozzle. The interior chamber of the transition area tapers continuously towards its second end. The interior chamber of the transition area is defined by the outer surfaces of an oblique truncated cone with an opening angle of approximately 55°.

Abstract: An applicator instrument for applying dental compounds includes an instrument head. The instrument head has a support structure with a plurality of elastic projections formed on the support structure. The projections have less stiffness than the support structure with respect to a height extent and enclose a receiving space for the dental compound. Additionally, the projections have a planar configuration and are arranged substantially parallel to one another with respect to a width extent. The diameter of the instrument head is equal to or less than 3 mm. Using this applicator instrument, it is easier to apply dental compound in dosed amounts and to spread the dental compound across a surface to be treated.