Abstract: A dental 3D camera for optically scanning a three-dimensional object, and a method for operating a dental 3D camera. The camera operates in accordance with a triangulation procedure to acquire a plurality of images of the object. The method comprises forming at least one comparative signal based on at least two images of the object acquired by the camera while at least one pattern is projected on the object, and determining at least one camera shake index based on the at least one comparative signal.

Abstract: In a method for the creation of a dental 3D radiograph of at least a subregion, forming a volume, of an object using an X-ray apparatus, the volume is recorded as a 3D radiograph from a plurality of projected images during a revolution around the object. At least a part of the object is displayed in a graphical representation before the radiograph of the volume is created, the position of the graphical representation relative to the current position of the apparatus and the patient being known. The volume to be radiographed, governed by the positioning of the object relatively to the apparatus and by the choice of the settings data and/or control data, is placed in the graphical representation in an at least approximately correct position, and when there is a change in position and/or size of the volume to be radiographed within the graphical representation, the settings data and/or control data for the creation of the 3D radiograph are defined.

Abstract: The invention relates to a method for producing denture parts or for tooth restoration. According to said method, to reconstruct a tooth requiring repair or a defective condition, at least some of the missing exterior surfaces of denture parts or tooth restorations are adapted to the existing residual tooth material and/or the opposing teeth and/or the position of the neighbouring tooth and/or the occlusion position, by means of the optimisation of a generic dental-model data record of the desired tooth type, thus varying the linear factors of at least the most important components, (determined from the electronic data records of a larger number of measured tooth surfaces by primary axis analysis methods), in such a way that the selected optimisation criteria are fulfilled by the minimisation of an error function.

Abstract: A machining device for a workpiece wherein a first feed axis extends through a workpiece holder, a first machining tool is disposed on a first side of the feed axis, and a second machining tool is disposed on a side of the feed axis opposing the first side. Between a first feed axis and perpendicular to a second feed axis, at least one machining tools has a predetermined fixed angular offset.

Abstract: A carrier for at least one fastening element (4) to be fabricated having an attachment area whereby the carrier is provided with a holding piece (3) for attachment in a receiving part of a finishing machine and whereby the carrier includes a carrier piece (2) for the fastening element (4) and the carrier piece (2) is embedded at least partially in the carrier piece (2) in a manner so that the attachment area (4b) of the fastening element (4) can be fabricated. A method for producing a fastening element (4) to be finished and to be attached to an individual surface whereby the contour of the attachment area is defined with the aid of data of the surface onto which the fastening element (4) is to be attached and whereby a pre-shaped, not yet individualized fastening element (4) is formed by removal of material to produce the specific contour.

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 blank and method for the production of dental shaped bodies in machining equipment having at least two tools located in the machining chamber of the machining equipment, including a corpus of tooth restoration material, from which the shaped body can be carved by means of at least one of at least two tools by material removal. The blank exhibits at least two gages, each of which is in the form of a recess, the geometry of which is such that the tool selected for the cutting operation can be recognized by means of at least one of the gages by reference to its outer contour, the at least two gages being disposed on the blank in such a way that they can be simultaneously engaged by the at least tools when the blank is clamped in the machining equipment for carving purposes.

Abstract: A gingiva former and final abutment, which has a connecting geometry for attachment to an implant and comprises a tailor-made edge, a tapering lower part that is located beneath and has a tailor-made shape, and a tapering upper part having a lateral surface, wherein the lateral surface has an angle of inclination (?) of between 0.5° and 30° with respect to a longitudinal axis (A) of the connecting geometry.

Abstract: A dental orthodontic apparatus includes a carrier and fastening elements having rear holding and front parts. The carrier includes an elongated carrier piece having two sections and a carrier holding part. The fastening elements are arranged along the sections such that the front part of each element is adjacent a front side of a section, and the rear holding part of each fastening means is adjacent a rear side of the section. Carrier piece material at the rear side of a section is removable by a fabrication tool. The rear holding part of each fastening element is embedded within and completely surrounded by a first section of the carrier piece, and the rear holding part of each fastening element is embedded within and completely surrounded by a second section of the carrier piece.

Abstract: Disclosed is a machining device, particularly for producing tooth replacement parts or models thereof, comprising a workpiece holder and at least one machining tool which is disposed in a machining space for a workpiece that is mounted therein. The feeding axis for the workpiece into the machining space extends at an angle relative to the horizontal.

Abstract: For the purpose of 3D scanning the surface of an object by optical double triangulation using the phase-shifting method, more particularly for dental purposes, at least two 3D scans of the same object (1) are carried out at different triangulation angles (?1, ?2), the first angle of which is known and the second angle of which is known at least approximately. For each pixel (Bi) of the phase related image (?1(x,y)), a wave number (wz(xi,yi) is determined using the second phase related image, the integral portion of which is equal to the order (n) of the uniqueness range (E1) in which the respective pixel (Bi) is located. The wave number (wz(x,y)) is optimized, at least for a random sample of m pixels (Bi), by minimizing a non-integral portion of the wave number (wz (xi,yi)?[wz(xi,yi)]).

Abstract: The invention concerns a device (1) for editing a virtual 3-D model (2) of teeth (2.1, 2.2, 2.3, 2.4) positioned in a dental arch (9, 11) by means of a virtual tool (21, 22, 23, 24, 25, 26, 27, 28, 50). The tool (21, 22, 23, 24, 25, 26, 27, 28, 50) can be used on a first tooth (2.1, 2.3) of the 3-D model (2), whereby the corresponding application is carried out on a second mirrored tooth (2.2, 2.4), contralateral to the first tooth with respect to a plane of symmetry (12), that is, on the tooth on the other side of the plane of symmetry (12), which is positioned as a mirror image of the first tooth (2.1, 2.3) with respect to the plane of symmetry (12).

Abstract: The invention relates to a drilling jig (1) for carrying out implant drilling (6, 7, 8) for a dental implant and to a method for producing said drilling jig, comprising a base part (2) having at least one passage opening (19, 20, 21) and comprising at least one sleeve (3, 4, 5). A first surface (9) of the base part (2) has an impression (10) of a preparation point, wherein a second opposite surface (15) of the base part has a bearing surface (16, 17, 18). The passage opening (19, 20, 21) is expanded proceeding from the second surface (15) to the first surface (9) of the base part (2), wherein the passage opening (19, 20, 21) and the bearing surface (16, 17, 18) of the base part (2) are shaped in such a way that the sleeve (3, 4, 5) can be inserted at least partially into the passage opening (19, 20, 21) and the sleeve (3, 4, 5) rests on the bearing surface (16, 17, 18) in an inserted state and is positioned in the position and orientation thereof relative to the base part (2).

Abstract: The invention relates to a method for correlating an implantation site (2) of a jaw (1) with a 3D measured data record (21) of the implantation site (2) by means of an impression (3) positioned on the jaw (1) in the area of the implantation site (2), said impression comprising a connecting element (7) for an additional component and the position of the connecting element (7) relative to the implantation site (2) being determined. The invention further relates to a method for producing a drilling template (11) from an impression (3) having a connecting element (7) and to a drilling aid (8) that can be attached to the connecting element (7). The invention further relates to an impression (3) which comprises, on the lower side thereof, a female mold of at least one section of a jaw (2) having an implantation site (2), and to a drilling template (11) which consists of an impression (3) and a drilling aid (8).

Abstract: The invention relates to a gingiva former (1), which has a connecting geometry (5) to an implant (10) and comprises a tailor-made edge (2), a tapering lower part (4) that is located beneath and has a tailor-made shape, and a tapering upper part (8) having a lateral surface (9), wherein the lateral surface (9) has an angle of inclination (?) of between 0.5° and 30° with respect to a longitudinal axis (A) of the connecting geometry (5).

Abstract: A handheld dental camera performs three-dimensional, optical measurements. The camera includes a light source that emits an illuminating beam, a scanning unit, a color sensor, and a deflector. The scanning unit focuses the illuminating beam onto a surface of an object to be measured. The surface of the object reflects the illuminating beam and forms a monitoring beam, which is detected by the color sensor. Focal points of wavelengths of the illuminating beam form chromatic depth measurement ranges. The scanning unit stepwise displaces the chromatic depth measurement ranges by a step width smaller than or equal to a length of each chromatic depth measurement range, so that a first chromatic depth measurement range in a first end position of the scanning unit and a second chromatic depth measurement range in a second end position are precisely adjoined in a direction of a measurement depth, or are partially overlapped.

Abstract: A method for operating an imaging system, and a system, apparatus, and computer-readable medium, that operate in accordance with the method. The method includes providing field-of-view (FoV) information, and automatically selecting at least one recording sequence based on at least one of a particular diagnostic application of interest and the FoV information.

Abstract: A dental CAD/CAM system performs structural analysis 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: The invention relates to a device and a method for optical 3D measurement, wherein said device can be switched between a first mode for optical 3D measurement using a chromatic confocal measurement method or the triangulation measurement method and a second mode for colorimetric measurement. In the first mode, a broad-band illuminating beam is focused onto a first plane and in the second mode the broad-band illuminating beam is focused onto a second plane other than the first plane at a distance d from the surface of the object to be measured.

Abstract: A method for producing a dental prosthetic item, including providing a 3D model of the item. The providing includes determining an esthetically relevant designed subregion of a 3D model of the item as part of an exterior surface of the item. The subregion corresponds to a labial surface and/or incisor edge, or to a buccal and/or occlusal surface. Further steps include selecting a suitable blank, specifying a blank having a prefabricated esthetically relevant terminal subsurface of a surface of a tooth, a terminal subsurface of the blank being such as at least approximates the subregion. A further step includes forming the item from the selected blank such that a prefabricated terminal subsurface of the blank remains unmachined in at least a central region thereof. The forming includes machining the blank only in a marginal area of the terminal subsurface and on at least some surfaces outside of the terminal subsurface.