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.

A microwave furnace has a furnace chamber formed between a chamber housing and a sintering platform for an object to be sintered. A microwave source is arranged for emitting microwaves into the furnace chamber. The microwave furnace further has a susceptor that comprises a material which over a temperature range of the material of at least 23 C to 700 C couples into microwaves. The susceptor and the furnace chamber are movable relative to each other between a first position, in which the susceptor is positioned relative to the furnace chamber, and a second position in which the susceptor is positioned further retracted from the furnace chamber relative to the first position. The invention helps providing a zirconia material with a relative homogeneous material structure.

A dental oven for treatment of dental materials having one or more electric heating elements which extends adjacent to a heating space and is controlled by a heating controller. The heating controller regulates the temperature in the heating chamber and includes an output terminal for the heating element and an input terminal for temperature detection, which is electrically connected to a temperature detecting device, wherein the temperature detecting device has the one or more heating elements. The temperature sensing device includes a compensation device for compensation of nonlinearities at temperatures above 700° C. or in nonlinearities of the resistance of the heating element. The heating controller controls its output port based on the detected resistance of the heating element and on the compensation device.

A container and apparatus for preparing dental prosthetics. The container comprises a body having an interior and a top edge, a penetrable lid sealably secured to the top edge and containing a quantity of glazing liquid mixture liquid less than a volume of the body and a quantity of gas having a density greater than air. The apparatus comprises the container, a lid penetrator operable to form at least one penetration through the lid at at least one dipping location, an arm adapted to hold at least one dental prosthetic and pass each dental prosthetic through the at least one penetration into and thereafter out of the glazing liquid mixture, and wherein the arm is adapted to move the at least one dental prosthetic in a drying path after dipping in the glazing liquid mixture so as to form a consistent glazing layer thereover.

A dual-purpose sintering furnace including a furnace body having a furnace chamber, a first furnace mouth and a second furnace mouth which are communicated with the furnace chamber, a furnace door hinged to the furnace body and configured for closing the first furnace mouth, a blocking member lap-jointed inside the furnace chamber and configured for blocking the second furnace mouth, a sample stage, an ejection rod fixedly arranged on a sample placement face of the sample stage, a lifting device configured for driving the sample stage to raise or lower, so that the ejection rod pushes the blocking member until the second furnace mouth is opened, and so that the sample stage enters the furnace chamber through the second furnace mouth. The dual-purpose sintering furnace can complete a large amount of sintering as conventional sintering and also implement rapid sintering.

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.

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). The method has the following steps: —introducing the dental material (28) into the pre-pressing chamber (22); —heating the firing chamber (10), in which the molding insert (30) is located, pressing the dental material (28) towards the molding area (14, 16) using a pressing punch (26) by applying a force onto the pressing punch (26) during a first processing phase, wherein the pressing punch (26) is moved, and the pressing punch speed is detected as a speed profile dependent on the time; and adjusting the firing chamber (10), in particular cooling the firing chamber to a second temperature, during a second processing phase starting at a point in time at which the detected speed profile matches a first speed profile without reducing the force applied to the pressing punch (26).

A sintering furnace for couponents made of a sintered material, in particular for dental components, having a furnace chamber having a chamber volume (VK). A heating device, a receiving space having a gross volume (VB) located in the chamber volume (VK) and delimited by the heating device, and a useful region having a useful volume (VN) located in the gross volume (VB), are disposed in the furnace chamber. The furnace chamber has an outer wall consisting of walls having a wall portion to be opened for introduction of a component to be sintered having an object volume (VO) into the receiving space. In the furnace chamber the heating device has a thermal radiator having a radiation field which is disposed on at least one side of the receiving space. At least the useful volume (NV) disposed in the receiving space is disposed in the radiation field of the radiator.

A dental furnace for firing dental-ceramic compounds comprises a firing chamber for receiving ceramic elements to be fired. Further, a heating device for heating and firing the ceramic element is provided. The heating device comprises at least one heating element for producing IR radiation in the range of 0.8-5 μm.

The present invention relates to a method of manufacturing a dental component, in particular a dental prosthesis or a partial dental prosthesis, by means of a dental furnace, comprising the following steps: (i) preparing a virtual model of the dental component; (ii) automatically selecting one, two or more programs and/or automatically preparing one, two or more programs and/or preparing one, two or more suggestions for a program for operating the dental furnace on the basis of the virtual model of the dental component; (iii) producing a model of the dental component; (iv) embedding the model in an investment material; (v) removing the model from the investment material, in particular by heating or burning out, to obtain a negative mold of the model; (vi) inserting a raw material required for manufacturing the dental component into the negative mold; and (vii) producing the dental component in the negative mold in the dental furnace on the basis of the selected, prepared, or suggested program.