Abstract: A 3-D camera for obtaining an image of at least one surface of at least one object. The camera comprises a light source, arranged to illuminate the object, wherein a light beam emitted from the light source defines a projection optical path. The camera also includes at least one first aperture having a first predetermined size, interposed in the projection optical path such that the light beam passes through it. An image sensor receives light back-scattered by the object, the back-scattered light defining an observation optical path. At least one second aperture having a second predetermined size, is interposed in the observation optical path such that the back-scattered light passes through it. In one example embodiment of the invention, the first predetermined size is greater than the second predetermined size, and at least one optic is arranged in both the projection and observation optical paths.

Abstract: A method for producing a dental shaped body from a blank that has a corpus of tooth restoration material by a tool adapted to remove the material. To detect a position of the corpus inserted in a machining device, contact scanning is performed on the blank by the tool. At least one dimension of the blank corpus is detected, and the machining tool is prepositioned for a contacting operation according to the detected at least one dimension of the blank corpus.

Abstract: An extraoral dental scanner for three-dimensional capture of the surface of a dental shaped part (300) with a 3D measuring camera (102) having an optical axis (106), wherein the means for the machine-controlled relative positioning of the 3D measuring camera (102) and the dental shaped part (300) are embodied in such a way that the means for taking up and positioning the dental shaped part (300) can be moved into a parking position outside a region that can be captured optically by the 3D measuring camera (102), with a work plate (708) for manually positioning the dental shaped part (300) in the measurement volume (144) of the 3D measuring camera (102), wherein the work plate (708) is aligned perpendicularly to the optical axis (106) and wherein the work plate (708), as viewed from the 3D measuring camera (102), is arranged behind the means for taking up and positioning the dental shaped part (300), makes it possible to record uninterrupted 3D image data with very short recording times both by automatic and b

Abstract: The invention relates to a dental preparation instrument (1), comprising a tool (6) that rotates in an alternately reversible manner, wherein the preparation instrument (1) has a drive (2) for the tool (6). The drive (2) provides a continuous fully rotational motion (7), and a gearing (43) is arranged before the tool (6). Said gearing converts the continuous fully rotational motion (7) of the drive (2) into an alternately reversing rotational motion (8), which is continuous as viewed over several reversals.

Abstract: The invention relates to a method and a device for three-dimensional measurement of an object. The device includes a laser source for generating an illumination beam, a focusing optics for focusing the illumination beam on at least one measuring point on a surface of the object to be measured, a detector for detecting an observation beam reflected by the surface of the object, a confocal observation optics which allows only the observation beam that is focused on the surface of the object to pass through to the detector. The laser source includes multiple coherent laser elements, the laser elements simultaneously emitting illumination beams that are focused on multiple measuring points on the surface of the object, so that the laser elements are arranged to reduce the speckle effect in the 3D-image data generated by the measurement.

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 shot 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 blank for manufacturing molded dental components includes a blank body that includes tooth repairing material. A molded dental component is manufactured by removing portions of the tooth repairing material using a tool. The blank is encoded with at least one structure as a carrier of information regarding properties of the blank body. The at least one structure is arranged such that at least one of a position, dimensions, or a 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 are embodied such that a value acquired during a determination of the above corresponds to information about a property of the blank body.

Abstract: Disclosed is a dentists' preparation instrument (1) comprising a turbine (4) for driving a tool (3) using compressed air, and a rotor (6) that is arranged in a turbine compartment (5), rotates about a longitudinal axis (7), and has blades (11) extending to a face (13) of the rotor (6). The turbine compartment (5) has a wall (10) opposite the face (13), and a discharge port (12) for the compressed air in the direction of a returning air duct (8). The discharge port (12) is disposed in such a way that at leasts parts of the blades (11) swipe past the discharge port (12) as they rotate about the longitudinal axis (7). The turbine compartment (5) also has a disruptive contour chamber (15) that adjoins the face (13). The face (13) of the blades (11) of the rotor (6) that faces the disruptive contour chamber is open towards the disruptive contour chamber (15).

Abstract: The invention relates to a dental X-ray system for the creation of a radiograph (13), comprising an imaging unit (5) for surface detection. The imaging unit (5) has a light source (6), which produces a polychromatic beam of visible light (6?), a masking edge (7), which extends at least partially into the polychromatic beam of light (6?) between the light source (6) and the recording area (19) for the purpose of creating a shadow demarcation line (17) in said recording area (19), and an optical detector (8), wherein the light source (6), the masking edge (7) and the optical detector (8) are mounted directly on the supporting device (2) and/or on the X-ray source (3) and/or on the X-ray detector (4) and can be moved together therewith past the recording area (19) in circular motion.

Abstract: A method for determining a quality feature of a dental treatment comprises the detection of a patient's radiographic image data set before the creation of a drill hole for a dental implant, the detection of a patient's non-radiographic image data set after the creation of the drill hole for a dental implant by means of a drilling tool, the correlation of the radiographic image data set and the intraoral non-radiographic image data set, and the determination of the quality feature from the correlation of the radiographic image data set and the non-radiographic image data set. A device (1) that comprises a computer (10), an interface (11) for detection of a radiographic image data set, and an interface (12) for detection of a non-radiographic image data set is equipped to carry out this method. This detection of the quality feature can take place during implantation, after it is concluded, or after mounting of a dental treatment on the implant(s) is concluded.

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: A dental Computer-aided design (CAD)/Computer-aided manufacturing (CAM) system forms a custom dental preparation guide for guiding a dental tool that alters a shapes a tooth structure to which a custom prosthetic dental item is to be attached. The system acquires an optical measurement and an x-ray of at least one dental structure. The system correlates the acquired optical measurement and the x-ray to form a model of the at least one dental structure. The system generates a model of a reduced tooth structure based on the model of the at least one dental structure. The system also provides at least one dental preparation guide based on the model of the reduced tooth structure.

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 shot 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: The invention relates to a reference object (3) and a method for checking a measuring system (1), wherein a plurality of three-dimensional recordings (4, 8) of a reference object are recorded from different recording directions (5) by means of the measuring system (1). The reference object (3) has a closed shape, wherein each of the three-dimensional recordings (4) is registered with at least the preceding recording (4). In the case of a faulty calibration and/or in the case of a faulty registration, the individual recordings (4, 8) are deformed compared to the actual shape of the reference object (3), so that the deformation continues when assembling the individual three-dimensional recordings (4) to form an overall recording (54) and the generated overall recording (54) deviates in its dimensions from the dimensions of the reference object (3) as a result thereof.

Abstract: A method for producing a dental shaped part includes checking an outer contour of a tool of machining equipment, using least one gauge provided on a blank formed from a tooth restoration material from which a dental shaped part is to be machined using the machining equipment. The method also includes machining the dental shaped part from the blank using the tool of the machining equipment, when the outer contour of the tool corresponds to the at least one gauge provided on the blank.

Abstract: A procedure for creating a dental prosthetic includes registering three-dimensional (3D) dental impression image data of a tooth restoration site and 3D x-ray image data of the tooth restoration site, and removing image data corresponding to soft tissue in the tooth restoration site from the 3D dental impression image data. A system for producing a dental prosthetic includes at least one processor operable to register 3D dental impression image data of a tooth restoration site and 3D x-ray image data of the tooth restoration site and remove image data corresponding to soft tissue in the tooth restoration site from the 3D dental impression image data.

Abstract: The invention relates to a method and a device (20) for three-dimensional measurement of an object (6) using a confocal microscopy method comprising a laser source (21) for generating an illumination beam (3), a focusing optics (4) for focusing the illumination beam (3) on at least one measuring point (5, 23) on a surface of the object (6) to be measured, a detector (10) for detecting an observation beam (9) reflected by the surface of the object (6), a confocal observation optics (7), which allows only the observation beam (9) that is focused on the surface of the object (6) to pass through to the detector (10). The laser source (21) comprises multiple coherent laser elements (22), the laser elements (22) simultaneously emitting illumination beams (3) that are focused on multiple measuring points (5, 23) on the surface of the object (6), so that the laser elements (22) are arranged to reduce the speckle effect in the 3D-image data generated by the measurement.

Abstract: A magnetic field unit of an MRT system for image capturing a head region as the region to be recorded, comprising at least one permanent magnet for generating a main magnetic field, a device for generating a gradient field, and at least one coil for generating and receiving radio frequencies. The magnetic field unit is fastened to a mounting such that a longitudinal axis of the magnetic field unit, together with a vertically extending axis, forms an angle of no more than +45 degrees, and the magnetic field unit and the patient can be adjusted relative to each other such that the magnetic field unit can be moved to a position surrounding the head of the patient.

Abstract: The present invention relates to dental machining apparatus (1) for blanks (3) comprising a tool spindle (2) having an axis of rotation (2.8) and mounted in a bearing housing (1.2) disposed on the machine housing side. A force sensor (5) is also provided, which is disposed between the tool spindle (2) and the bearing housing (1.2) for the purpose of detecting the machining force acting on the tool spindle (2), wherein the tool spindle (2) can be supported against the bearing housing (1.2) directly or indirectly via the force sensor (5).

Abstract: The method for the production of a dental prosthesis part comprises the provision (11) of a dataset (2) for a dental prosthesis part (6) for use in a CAD/CAM technique, the provision (12) of reference data (3) for optical properties of different dentin materials and translucent enamel materials for the dental prosthesis part (6) and a relationship (4) between said optical properties, the desired optical properties and the dimensions of the dental prosthesis part (6), the definition (13) of a first setpoint (S1) for the optical properties of a dentin region, the definition (14) of a second setpoint (S2) for the optical properties of an enamel region, the definition (15) of a third setpoint (S3) for a thickness of the enamel region of the dental prosthesis part (6), the selection and provision (16) of a dental prosthesis mold block (5) having a dentin region made from a material.