Abstract: A system for producing dental moldings from blanks, having a machine tool for machining a blank, and a workpiece holder for securing the blank during machining. The machine tool has in this case a mount for the workpiece holder, and the workpiece holder has a shank region that can be inserted reversibly into the mount and in the inserted state can be secured in position in the mount. Furthermore, the system has a lever element, wherein the system is configured so that the lever element can be clamped between the mount on one side and the shank region on the other side to secure the shank region in position in the mount. With such clamping of the lever element, a particularly high clamping force can be produced, by way of which the shank region of the workpiece holder can be secured in position in the mount.

Abstract: A system for producing dental moldings from blanks, having a machine tool for machining a blank, and a workpiece holder for securing the blank during machining. The machine tool has in this case a mount for the workpiece holder, and the workpiece holder has a shank region that can be inserted reversibly into the mount and in the inserted state can be secured in position in the mount. Furthermore, the system has a lever element, wherein the system is configured so that the lever element can be clamped between the mount on one side and the shank region on the other side to secure the shank region in position in the mount. With such clamping of the lever element, a particularly high clamping force can be produced, by way of which the shank region of the workpiece holder can be secured in position in the mount.

Abstract: For the manufacture of shaped parts (6) from ceramics, for example for dental-technical purposes, an assembly is provided which comprises a powdery ceramic raw material compressed to form a ceramic green compact (4), an embedding mass (3) which neither damages nor reacts chemically with the ceramic green compact (4), and a holder or workpiece receiver (1) which holds the embedding mass (3) in a manner to allow the ceramic green compact (4) to be machined while being embedded in the embedding mass.

Abstract: For the manufacture of shaped parts (6) from ceramics, for example for dental-technical purposes, an assembly is provided which comprises a powdery ceramic raw material compressed to form a ceramic green compact (4), an embedding mass (3) which neither damages nor reacts chemically with the ceramic green compact (4), and a holder or workpiece receiver (1) which holds the embedding mass (3) in a manner to allow the ceramic green compact (4) to be machined while being embedded in the embedding mass.

Abstract: For the manufacture of shaped parts (6) from ceramics, for example for dental-technical purposes, first of all a powdery ceramic raw material is compressed to form a ceramic green compact (4). The inner contour and/or the outer contour of the shaped parts (6) is then prepared by machining the ceramic green compact (4) by means of eroding methods, with the ceramic green compact (4) being embedded into a workpiece receiver (1) before the Machining by means of an embedding mass (3) which neither damages nor reacts chemically with the ceramic green compact (4). Subsequently, the machined ceramic green compact (4) is sintered to form a high-strength ceramic shaped part. A ceramic material which is almost shrinkage-free during sintering is preferably used.

Abstract: For the manufacture of shaped parts (6) from ceramics, for example for dental-technical purposes, first of all a powdery ceramic raw material is compressed to form a ceramic green compact (4). The inner contour and/or the outer contour of the shaped parts (6) is then prepared by machining the ceramic green compact (4) by means of eroding methods, with the ceramic green compact (4) being embedded into a workpiece receiver (1) before the machining by means of an embedding mass (3) which neither damages nor reacts chemically with the ceramic green compact (4). Subsequently, the machined ceramic green compact (4) is sintered to form a high-strength ceramic shaped part. A ceramic material which is almost shrinkage-free during sintering is preferably used.

Abstract: In a process for cleaning and/or disinfecting and/or maintaining medical or dental instruments, in a washing container filled with liquid, particularly water, the at least one tool holder being washed internally and externally and additionally having ultrasound applied thereto, in the case of a hollow or sleeve-shaped instrument, particularly tool holder, the cavity of the instrument, in particular the cavity or cavities of the tool holder accommodating the mechanical drive elements, is drained and ultrasound is then applied to the tool holder.

Abstract: In a device for selectively cleaning, disinfecting and maintaining medical or dental instruments, particularly tool holders, with a washing container to accommodate at least one instrument and with an ultrasonic cleaning device with an ultrasonic exciter which is arranged on the washing container, the washing container has a cross-sectional shape, preferably a horizontal cross-sectional shape, which deviates from a rectangular or square cross-sectional shape.

Abstract: In a process for cleaning and/or disinfecting and/or maintaining medical or dental instruments, in a washing container filled with liquid, particularly water, the at least one tool holder being washed internally and externally and additionally having ultrasound applied thereto, in the case of a hollow or sleeve-shaped instrument, particularly tool holder, the cavity of the instrument, in particular the cavity or cavities of the tool holder accommodating the mechanical drive elements, is drained and ultrasound is then applied to the tool holder.

Abstract: A process for the care or maintenance of medical and dental instruments and a maintenance locale or installation for implementing this process. The maintenance for the instruments, which is carried out in a single uninterrupted process cycle, and at a single maintenance locale facilitating all of the process steps.