Abstract: The invention relates to an apparatus and a method for optical 3D measurement, comprising a first beam deflector for deflecting an illuminating beam onto a measurement object and for deflecting the observation beam which is radiated back by the measurement object, wherein the first beam deflector can move along a path distance S.

Abstract: In a method of processing a digitized workpiece (1), especially a three-dimensional model of a dental prosthetic item to be produced therefrom, by altering the surface data of the workpiece by means of a tool which acts on a local zone of action (3) on the surface (2), a change in height of said surface (2) is effected in said zone of action (3) of said tool when the tool is applied to said surface, the said zone of action of said tool covering a modified region (5) showing a substantially constant change in height (t) over the zone of action (3) and also a transition region (4), in which the surface of the modified region (5) merges into the surface surrounding said zone of action (3).

Abstract: A device for positioning a patient within an image volume of a cone-beam tomography system. The device includes a volume indicator adapted to indicate at least a front boundary of the image volume and having a horizontal indicator for horizontal alignment. The device also includes a head clamp adapted to position at least a portion of the head of the patient within the front boundary of the image volume indicated by the volume indicator.

Abstract: In a method for the creation of a dental 3D radiograph of at least a subregion, forming a volume (42, V1, V2), of an object (14) using an X-ray apparatus (1), said volume can be recorded as a 3D radiograph from a plurality of projected images during a revolution around said object. At least a part of the object (14) is displayed in a graphical representation (40, 71, 72, 73) before the radiograph of the volume (42, V1, V2) is created, the position of the graphical representation (40, 71, 72, 73, 74) relative to the current position of the apparatus and the patient being known.

Abstract: A system for a dental superstructure to be attached to an implant using a digital model description of a shape of the superstructure, the superstructure including first and second elements. The system comprises a computing device arranged to (a) analyze a recorded real clinical situation or shaped clinical situation of an implant axis and insertion axis, (b) compute a shape of the dental superstructure based at least in part on the determined implant axis, (c) generate digital data representing the shape of the superstructure, and (d) separate the computed shape into first digital data representing a shape of the first element to be connected to the implant and second digital data representing a shape of the second element to be connected to the first element, the shape of the first element being optimized, at least in part, based on a tilt angle between the determined implant axis and insertion axis.

Abstract: A dental CAD/CAM system performs structural analyses of a candidate prosthetic dental item that is to be created using design data representing the prosthetic dental item. The dental CAD/CAM system can recommend positioning of a surface of the prosthetic dental item within a volume of a milling block based on the design data and data representing desired aesthetic properties of the prosthetic dental item. The dental CAD/CAM system can generate and display simulated images of the aesthetic properties of the prosthetic dental item using the design data, data representing the surface of the prosthetic dental item, data representing the volume of the milling block, and data representing aesthetic properties of the milling block. The dental CAD/CAM system can be used to form prosthetic dental items having complex aesthetic properties, such as translucent regions and shades of colors that vary spatially.

Abstract: In a method for processing a blank (1), in which the blank (1) can be densely sintered with shrinkage following machining and machining of the blank (1) is carried out in a machining device (7) allowing for an individual scale-up factor (F) relevant to the blank (1) for compensating for the shrinkage occurring during dense sintering, a linear measurement of the blank (1) is performed in one or more of the dimensions length, width, and height for determining the scale-up factor (F), wherein the measured linear measure (1) bears a known relationship to the scale-up factor (F), the type of blank (1) being known. Linear measurement of the blank (1) can be carried out in the machining device (7).

Abstract: The invention relates to a method for automatically creating a dental superstructure for joining to an implant based on a digital model description of the shape. To this end: the actual clinical situation or an arranged clinical situation of the implant (3; 13) is recorded in the form of digital data; this situation is analyzed; the implant axis (5; 16) is determined; the optimal shape of the superstructure (1, 2) is calculated while taking a set of structural rules into account, and; a production machine is used for producing the individual parts from at least one blank (11) based on the digital data.

Abstract: A method for creating a tomographic image in the manner of a dental X-ray panoramic tomographic image from a digital 3D volume exhibiting X-ray absorption values, comprising transradiating the 3D volume forming an object to be scanned virtually using a virtual X-ray source, recording the virtually produced image by a virtual detector, and moving the virtual source of X-rays and virtual detector virtually past the object to be scanned with formation of a sharp layer having a blurred area.

Abstract: The invention proposes a dental X-ray apparatus comprising a patient-positioning system arranged on a support and having a forehead rest. A horizontally pivotable bearing arm is arranged on the support, and the forehead rest is in turn arranged thereon.

Abstract: Disclosed is a method for designing tooth surfaces of a digital dental prosthetic item existing as a 3D data set using a first 3D model of a preparation site and/or of a dental prosthetic item and a second 3D model, which second model comprises regions which match some regions on the first 3D model and regions which differ from other regions of the first 3D model, the non-matching regions containing some of the surface information required for the dental prosthetic item, wherein at least three pairs (P1, P2, P3) of points (P11, P12; P21, P22; P31, P32) corresponding to each other are selected on the matching region on the first 3D model (A) and the second 3D model (A?), that the positional correlation of the second 3D model with reference to the first 3D model is determined with reference to the at least three pairs (P1, P2, P3), and that portions of the non-matching regions of the first and second 3D models are implemented for designing the tooth surface of the dental prosthetic item taking into consideratio

Abstract: A method for producing a dental prosthesis element wherein construction relating to the dental prosthesis element is recorded together with measurement data relating to the dental prosthesis element and is reproduced on a display, the measurement data having been recorded by a three-dimensional measurement device. A 3D data record of the tooth situation can be reproduced on the display instead of the construction data. A device for the partial manual treatment of the dental prosthesis element includes a three-dimensional measurement device, a display, and a computer unit for the correlation and comparison of two data records and for graphically presenting the data generated by the comparison.

Abstract: A scanning system for carrying out 3D scanning of dental models in a scanning direction V including a holding device for a whole jaw model which spans an occlusal plane E over a line-shaped mandibular arch, a base, a swivel bearing on a swivel axis normal to the scanning direction V and a stage mounted for rotation on the swivel bearing relatively to the base, on which the dental model to be scanned can be mounted. The stage can be rotated through an angular range ? of at least 150° about the swivel axis, and the whole jaw model can be mounted such that said occlusal plane E is aligned parallel to said scanning direction V. An evaluation unit receives data from a detector to generate a 3D data set.

Abstract: A method for recording an image of an object includes projecting a strip pattern onto the object, recording the projected strip pattern as raw image data using a camera, and calculating an image of the object from the raw image data. A strip pattern having a duty cycle of less than 1 can be used to increase measuring precision during measurement of a translucent object, and can eliminate a need for additional contrast agents for a recording of the object.

Abstract: The invention relates to an X-ray device comprising an x-ray sensitive camera for creating tomograms, especially panoramic tomograms. Means for creating 3D shots of a partial volume of the mandibular arch are also provided, said 3D shots being created especially by a second image receiver for creating a 2D shot and means for taking a plurality of 2D shots from different directions and creating a 3D sot therefrom, preferably according to conebeam technology with the associated reconstruction algorithms. The x-ray sensitive camera comprises a first x-ray sensitive image receiver for creating a tomogram, and a second x-ray sensitive image receiver for creating plane shots.

Abstract: A measuring body for an implant, having a measuring geometry that can be captured by a measuring camera and a connection geometry on the implant. Said measuring geometry is arranged on a test part and the connection geometry is arranged on a bearing part, both parts being embodied as separate components. Said bearing part comprises a bearing for the test part and the test part comprises a counter bearing to the bearing and the measuring geometry is provided on a free end of the test part. Also provided is a method for capturing a 3D-measurement drawing of a measuring body that is arranged on an implant.

Abstract: Blank for manufacturing dental moulded components, wherein the blank has a blank body (2) composed of tooth repairing material from which the moulded component which is to be manufactured can be produced by removing material by means of a tool (6, 7), wherein the blank has an encoding with at least one structure (11-14; 17-19; 31-33; 42-43; 52-53) as an information carrier for properties of the blank body (2), wherein the structure is arranged in the blank in such a way that the position, dimensions or type of structure can be determined by sensing or measuring the blank. In this context, the position, the dimensions or the type of the structure (11-14; 17-19; 31-33; 42-43; 52-53) are embodied in such a way that the value acquired during the determination of the above corresponds to analogue information about the property of the blank body (2).

Abstract: A method for optically measuring an object by means of an optical recording apparatus includes a triangulation method. A first shutter means is used to produce a first pattern and to project the first pattern as a first projection beam onto the object to be measured. At least one further shutter means is used to produce a further pattern and to project the further pattern as a further projection beam onto the object to be measured. The first pattern and the further pattern are passed back from the object as observation beams and are recorded by at least one recording means in order to obtain a three-dimensional data record of the object. The projected first pattern and the further pattern are recorded at the same time in at least one triangulation recording using the at least one recording means.

Abstract: The invention relates to an X-ray emitter 1 comprising an X-ray tube 2 disposed in an oil-tight housing 3 containing a high-tension transformer 2.1, wherein an electrical supply line 4 for the heater voltage for X-ray tube 2 is provided, which is led through the housing 3. Read-out and storage electronics 5 including a microcontroller 5.4 and a data storage device 5.2 are provided on or in the housing 3, and at least one period of operation of the X-ray tube 2 can be acquired and stored in the data storage device 5.2 by means of the read-out and storage electronics 5.