Abstract: The invention shows a material provision device for a stereolithography apparatus to provide print material (16), in particular a photopolymer, to be cured, wherein the material provision device (10) surrounds an in particular limp material cartridge (12) which receives the print material (16) on all sides and (UV) light-proof, and the material cartridge (12) comprises an outlet (20) via which the print material (16) may be dispensed and which is received in a connection (42) or a spout in the material provision device (10) and is at least partially supported thereon or therein or seals against it.

Abstract: A dental furnace having closed or closeable firing chamber (12), which is surrounded by thermal insulation (20) and which comprises at least one inlet terminal (22) and at least one outlet terminal (24). Via said two terminals, a gas, especially air, may be passed through the firing chamber (12) and/or may be discharged from the firing chamber (12), wherein a vacuum source (44) is provided, which is in direct or indirect communication with the outlet terminal (24) and via which the outlet terminal (24) may be set under vacuum pressure. At the outlet terminal (24), an especially T-shaped or Y-shaped connector (26) is attached. The connector (26) comprises two entrance ports (32, 24) and an exit (40), wherein the exit (40) is in communication with the vacuum source (44) and a first entrance port is in communication with the firing chamber (12), and especially is flange-mounted at the outlet terminal (24) thereof, and a second entrance port (34) is in communication with ambient air.

Abstract: This invention relates to a device for drying at least one object containing a liquid, in particular a dental restoration object (12). Said device comprises a means for generating thermal energy acting upon the object and sufficient for increasing the temperature of the object to the boiling point. Moreover, the device includes an impingement area for impinging on the object with thermal energy and a control device (24) that is characterized by the fact that a temperature detection element (20) of the device (10) measures the temperature of the object (12), and upon reaching a trigger temperature that is at the boiling temperature, somewhat below or somewhat above thereof, emits a signal to the control device.

Abstract: The invention relates to a single- or multi-unit dental restoration, which consists of a support structure and a veneer, which support structure is in particular made from oxide ceramics by means of additive manufacturing, particularly preferably by means of rapid prototyping, wherein the veneer is produced by pressing a ceramic material, such as a glass ceramic or composite material, which is more translucent than the support structure, characterized in that the veneer fills and/or penetrates recesses of the support structure (12) configured as a net or frame structure or as a reinforcement, wherein it is particularly provided that the recesses penetrate through the support structure (12).

Abstract: A dental cooling device is provided, comprising a muffle (12) and a medium (30) as cooling source. The medium (30), in particular a liquid medium (30), is stored at least in the outer region of the muffle (12) and has an evaporation temperature higher than the room temperature. The quantity of medium (30) is calculated in advance such that the enthalpy of evaporation of the medium is substantially destroyed or consumed when cooling the muffle (12) to the evaporation temperature.

Abstract: The invention relates to a process for the production of a dental restoration, in which an oxide ceramic material (a) is subjected to a first heat treatment, (b) is subjected to a second heat treatment and (c) is cooled, wherein the heat treatment in step (a) is effected at lower pressure than the heat treatment in step (b).

Abstract: The invention relates to a single- or multi-unit dental restoration, which consists of a support structure and a veneer, which support structure is in particular made from oxide ceramics by means of additive manufacturing, particularly preferably by means of rapid prototyping, wherein the veneer is produced by pressing a ceramic material, such as a glass ceramic or composite material, which is more translucent than the support structure, characterized in that the veneer fills and/or penetrates recesses of the support structure (12) configured as a net or frame structure or as a reinforcement, wherein it is particularly provided that the recesses penetrate through the support structure (12).

Abstract: The invention concerns a process for the approach to an oriented relative position between a camera or scanning device and a dental assistance element (10), in particular via an app on a smartphone, for recording the dental assistance element (10), such as a miniature shade guide (10). A mark (4) is attached to the dental assistance element (10), and/or at least one part of the dental assistance element (10) is used as a mark (4). A stencil (6) which is congruent with or mathematically similar to the mark (4) is displayed on a display device of the camera or scanning device. For the approach to the oriented relative position between the camera or scanning device and the dental assistance element, a modification of the degree of coverage of the stencil (6) with the mark (4) or the one part of the dental assistance element (10) is detected.

Abstract: The invention relates to an arrangement of a furnace and of bulk material of glass particles, said furnace (10) comprising a pressing punch (36), a pressure, distance and/or speed sensor and a control device for controlling a pressing process based on the output signal of the sensor. The sensor detects at least a pressure, position and/or motion parameter of the pressing punch (36). The pressing punch (36) acts on the bulk material of glass particles (32)—possibly via an interposed ram (28)—, said glass particles being guided and crystallizable in a press channel (30). The trigger criterion for the process control is a change of at least a motion parameter of the pressing punch (36) upon softening of the bulk material of glass particles (32) which change is detected by the sensor.

Abstract: A dental treatment device with an energy source is provided which is arranged at least partially in or on a working chamber, comprising a stamp which is movable in relation to the dental treatment device as for the rest and which comprises a receiving plate for dental restoration parts. It is provided that the working chamber has a through-opening at the top, into which the receiving plate (16) is at least partially movable. Further, a drive is provided for the transfer of the stamp from a working position into a presentation position, and optionally vice versa. A cover (32) is mounted, in particular hinged, on the dental treatment device as for the rest, by which cover the through-opening (26) is closable.

Abstract: A system of a dental restoration part or several dental restoration parts, and/or with a dental restoration part which is possibly embedded in a muffle, and a cooling device is provided. The cooling device comprises cooling bodies as bulk material and a movement device by means of which cooling bodies and the dental restoration part(s) may be moved relative to one another.

Abstract: The invention relates to a method for processing a dental material (28), in particular pressing and curing a dental material, by means of—a molding insert (30) that has a pre-pressing area (22) which adjoins a molding area (14, 16), wherein the pre-pressing area (22) is designed to receive the dental material (28), and—a pressing furnace with a firing chamber (10) for receiving the molding insert (30).

Abstract: The invention relates to a dental furnace, in particular a high-temperature dental furnace for oxide ceramics such as zirconium dioxide with sintering temperatures of between 1350° C. and 1650° C., having heating elements (14, 16) which are intended to give off heating energy to a firing chamber (12) in the dental furnace (10). The heating elements (14, 16) are configured as electrical resistance heating elements and supported below the firing chamber (12) each by means of at least one heating element support foot (18). The heating elements (14, 16) extend vertically to the top starting from the heating element support feet (18) and at the top, end in an arch (46), in particular in a semicircular arch or possibly in a pointed arch, without an upper lateral support, in particular not in the region of the arch (46).

Abstract: The invention shows a dental press furnace comprising a pressing punch (36) which acts on a green product (32) made of in particular a ceramic mass—possibly by means of an interposed ram (28)—, the green product (32) being guided in a press channel (30) which is configured in a muffle (24), and a pressure, distance and/or speed sensor detecting at least one motion parameter of the pressing punch (36), and comprising a control device for controlling the pressing process based on the output signal of the sensor, the trigger criterion for the start of the pressing process being a change of at least one motion parameter of the pressing punch upon heating and/or softening of the green product which change is detected by means of the sensor.

Abstract: The invention relates to a method for processing a dental material (28), in particular pressing and curing a dental material, by means of —a molding insert (30) that has a pre-pressing area (22) which adjoins a molding area (14, 16), wherein the pre-pressing area (22) is designed to receive the dental material (28), and —a pressing furnace with a firing chamber (10) for receiving the molding insert (30).

Abstract: The invention relates to a dental furnace, in particular a high-temperature dental furnace for oxide ceramics such as zirconium dioxide having sintering temperatures of between 1300 and 1850° C., comprising a heating element (10) which is intended to give off heating energy to the firing chamber. It is provided that the heating element (10) comprises at least two heating element sections (48, 50) adjoining one another at a transition area (34) which is not current-carrying and/or which extends away laterally, that the transition area (34) is supported on a position, in particular on the free end, spaced apart from the electrical connections (16, 18) on the dental furnace and carries at least the two adjoining parts of heating element sections (48, 50).

Abstract: A dental furnace having closed or closeable firing chamber (12), which is surrounded by thermal insulation (20) and which comprises at least one inlet terminal (22) and at least one outlet terminal (24). Via said two terminals, a gas, especially air, may be passed through the firing chamber (12) and/or may be discharged from the firing chamber (12), wherein a vacuum source (44) is provided, which is in direct or indirect communication with the outlet terminal (24) and via which the outlet terminal (24) may be set under vacuum pressure. At the outlet terminal (24), an especially T-shaped or Y-shaped connector (26) is attached. The connector (26) comprises two entrance ports (32, 24) and an exit (40), wherein the exit (40) is in communication with the vacuum source (44) and a first entrance port is in communication with the firing chamber (12), and especially is flange-mounted at the outlet terminal (24) thereof, and a second entrance port (34) is in communication with ambient air.

Abstract: The invention relates to a dental furnace comprising a firing hood equipped with a heating device that is movably supported for the opening and closing of the dental furnace relative to a base intended for receiving a dental restoration part, and further comprising a heat detection device that is directed towards an area above the base, in particular towards one or more dental restoration parts, and further comprising a control or regulating device for the dental furnace that is coupled to the heat detection device, wherein the heat detection device is configured as a thermal imaging camera (30) which is directed towards the area above the base while the firing hood (12) is partially or completely opened, and which feeds an at least two-dimensional image in the form of a matrix of the one or more inserted dental restoration parts (60) to the control or regulating device and/or to a muffle (26) that is intended for the generation of the dental restoration parts (60).

Abstract: In a dental furnace having a firing chamber (12) with a base and at least one receiving portion for dental restoration parts (40). The receiving portion has a plurality of support elements (26) that are arranged adjacent to one another and in particular have the same thickness, wherein said support elements (26) support the dental restoration part (40) during the firing process.

Abstract: This invention relates to a process for controlling a dental firing furnace in which a temperature in a firing chamber of the dental furnace is detected by means of a temperature sensor, and in which a heating element that is controlled by a control device controls the heating of the firing chamber of the dental firing furnace based on the measurement result of the temperature sensor. In this process a dental restoration part is received within the firing chamber of the dental furnace. The heating is controlled so that the dental restoration part reacts exothermically, emitting additional heat. The additional heat is detected by the temperature sensor which is pointed at the dental restoration part and the control device delivers at least one signal representing the additional heat, such as in the form of a display signal and/or control signal.