Abstract: A method for operating an internal combustion engine, in particular of a motor vehicle, wherein fuel is injected in a fuel injection device in a plurality of time-spaced partial injections per duty cycle directly into a combustion chamber of the internal combustion engine.

Abstract: A method for operating an internal combustion engine, in particular of a motor vehicle, wherein fuel is injected in a fuel injection device in a plurality of time-spaced partial injections per duty cycle directly into a combustion chamber of the internal combustion engine.

Abstract: Dental blank for the production of a dental prosthetic restoration, in particular of a multi-coloured dental prosthetic restoration, by processing removing the outer region of the blank, comprising (i) an inner connecting element having an preferably peg-shaped scaffold region in the direction of the coronal region of the dental blank and an implant connection geometry in the radicular direction of the dental blank, (ii) wherein the scaffold region of the connecting element is connected to a dentin scaffold region in the direction of the coronal region of the blank, and wherein (iii) the dentin scaffold region is connected to an (iv) outer region of the blank in the region of enamel in the direction of the coronal region of the blank, and wherein (v) the dental blank has an inner elongated lumen for fastening of the produced dental prosthetic restoration on an implant or abutment by means of a connecting screw or a bolt.

Abstract: Dental blank for the production of a dental prosthetic restoration, in particular of a multi-coloured dental prosthetic restoration, by processing removing the outer region of the blank, comprising (i) an inner connecting element having an preferably peg-shaped scaffold region in the direction of the coronal region of the dental blank and an implant connection geometry in the radicular direction of the dental blank, (ii) wherein the scaffold region of the connecting element is connected to a dentin scaffold region in the direction of the coronal region of the blank, and wherein (iii) the dentin scaffold region is connected to an (iv) outer region of the blank in the region of enamel in the direction of the coronal region of the blank, and wherein (v) the dental blank has an inner elongated lumen for fastening of the produced dental prosthetic restoration on an implant or abutment by means of a connecting screw or a bolt.

Abstract: A method for taking an impression for producing a dental prosthesis involves: A) generating an impression of regions of the upper jaw and lower jaw of a patient using an at least two-part tray, whereby the tray is inserted into the oral cavity of the patient; B) fixing the at least two tray parts to each other or against each other; C) determining the position and orientation of the at least two tray parts with respect to each other; and D) taking the tray parts out of the oral cavity of the patient. Also disclosed is the tray for implementing the method, whereby at least one marking is arranged on the surface of each tray part, and a device for intra-oral determination of the orientation and position of the marking and, thus, the at least two tray parts, is provided, whereby the device comprises a computer and a recording facility.

Abstract: The invention provides a method, an apparatus and a system 1 for operating a rotating electric machine.

Abstract: A method produces one or more dentures wherein the dentures have a base element that holds at least two tooth blanks. The method comprises producing a negative mold by machining on the basis of a digital image of a tooth situation and shortening, by machining, a length dimension of the tooth blanks that are preassembled and held in the negative mold from a basal side in order to achieve a tooth line adapted to the tooth situation. The method also comprises connecting the base element and the shortened tooth blanks to form the dentures.

Abstract: Dental compositions and methods provide a flowable ceramic powder of a powdered component, wherein the compositions and methods comprise at least one dental glass, glass ceramics, metal oxide, mixed oxide selected from metal oxides and/or a mixture comprising at least two of said components, a printable dental ink. Moreover, the compositions and methods produce dental prosthetic form bodies.

Abstract: A method and a device for operating an electrical machine having separate excitation, especially a synchronous machine. With the aid of a sensor system, a variable characterizing a rotor temperature and/or a stator temperature are/is determined, and an excitation current and stator currents for the electrical machine are specified by a control unit as a function of the variable characterizing the rotor temperature and/or the stator temperature, at least in specifiable operating ranges.

Abstract: The invention provides a method, an apparatus and a system 1 for operating a rotating electric machine.

Abstract: A method for taking an impression for producing a dental prosthesis involves: A) generating an impression of regions of the upper jaw and lower jaw of a patient using an at least two-part tray, whereby the tray is inserted into the oral cavity of the patient; B) fixing the at least two tray parts to each other or against each other; C) determining the position and orientation of the at least two tray parts with respect to each other; and D) taking the tray parts out of the oral cavity of the patient. Also disclosed is the tray for implementing the method, whereby at least one marking is arranged on the surface of each tray part, and a device for intra-oral determination of the orientation and position of the marking and, thus, the at least two tray parts, is provided, whereby the device comprises a computer and a recording facility.

Abstract: A method for automated manufacture of dentures including providing a digital data set of the individual denture to be produced, a digital separation of the model into dental arch and gingival, producing the dental arch from a ceramic or plastic material using cutting technology, producing the denture base through generative or ablative procedures from predominantly (meth-)acrylate-based plastic materials, connecting the dental arch and gingiva through bonding or joining or a combination of bonding and joining.

Abstract: For producing a mother matrix mould of a full or partial dental prosthesis or of a temporary crown or bridge or of a permanent crown or bridge, the data of a digitalised virtual model reflecting the status of the jaw is used to generate a data set of the digital tooth set-up of the full or partial dental prosthesis or of the temporary crown or bridge or of the permanent crown or bridge, based on which a rapid manufacturing or rapid prototyping method is used to produce a functional model of the full or partial dental prosthesis or of the temporary crown or bridge or of the permanent crown or bridge that is then invested in a curable elastic impression material from which the mother matrix mould is produced after curing the elastic impression material.

Abstract: A method produces one or more dentures wherein the dentures have a base element that holds at least two tooth blanks. The method comprises producing a negative mould by machining on the basis of a digital image of a tooth situation and shortening, by machining, a length dimension of the tooth blanks that are preassembled and held in the negative mould from a basal side in order to achieve a tooth line adapted to the tooth situation. The method also comprises connecting the base element and the shortened tooth blanks to form the dentures.

Abstract: A method and a device for operating an electrical machine having separate excitation, especially a synchronous machine. With the aid of a sensor system, a variable characterizing a rotor temperature and/or a stator temperature are/is determined, and an excitation current and stator currents for the electrical machine are specified by a control unit as a function of the variable characterizing the rotor temperature and/or the stator temperature, at least in specifiable operating ranges.

Abstract: Summary Methods for the production of complete or partial prostheses involve, firstly A) provision of 3D data of the situation in the mouth in the edentulate or partly toothed state; B) digital designing of the denture base for lower and upper jaw each; C) digital positioning of virtual teeth with appropriate occlusion and a tooth shape selected according to aesthetic criteria, in the case of complete prostheses, D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods; and D2) production of the denture base using an automated method from the groups of layer-building and of material-removing methods; and, in the case of partial prostheses; D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods; and D2) production of the support structures or fastening elements using an automated method from the groups of layer-building and of material-removing methods.

Abstract: Containers that are soluble in liquid methylmethacrylate and contain the PMMA powder fraction of a two-component system made up of PMMA powder component and liquid MMA monomer component are useful as components of packaging of powder/liquid two-component material, such as dental material, investment material for histology or metallography or in veterinary medicine.

Abstract: A method for automated manufacture of dentures including providing a digital data set of the individual denture to be produced, a digital separation of the model into dental arch and gingival, producing the dental arch from a ceramic or plastic material using cutting technology, producing the denture base through generative or ablative procedures from predominantly (meth-)acrylate-based plastic materials, connecting the dental arch and gingiva through bonding or joining or a combination of bonding and joining.

Abstract: For producing a mother matrix mould of a full or partial dental prosthesis or of a temporary crown or bridge or of a permanent crown or bridge, the data of a digitalised virtual model reflecting the status of the jaw is used to generate a data set of the digital tooth set-up of the full or partial dental prosthesis or of the temporary crown or bridge or of the permanent crown or bridge, based on which a rapid manufacturing or rapid prototyping method is used to produce a functional model of the full or partial dental prosthesis or of the temporary crown or bridge or of the permanent crown or bridge that is then invested in a curable elastic impression material from which the mother matrix mould is produced after curing the elastic impression material.

Abstract: Dental material is provided with at least one antimicrobial active substance that is applied onto inorganic particles or organic polymer beads and is bound non-covalently to the particles or polymer beads. This results in a dental material on which plaque colonisation is prevented.