An extraoral dental X-ray apparatus for imaging of a patient in the dental region including: a radiator array having at least two individual radiators each for emitting X-rays, and offset at least along a predetermined direction (z); and an X-ray detector for at least partially detecting the X-rays emitted by the individual radiators, the radiator array and the X-ray detector being rotatably arranged about an axis parallel to said predetermined direction, further including a control device for separately controlling the individual radiators, the control device being configured such that the emitted X-rays of the at least two individual radiators differ in intensity and/or spectral distribution of the X-rays to effect an intensity and/or spectral distribution which can be varied along the predetermined direction. The control device can adaptively adapt the intensity and/or spectral distribution to the anatomy of the patient.
The present invention relates to computer-implemented methods for correcting artefacts in x-ray projection images caused by electromagnetic disturbances on an x-ray detector (4) and for generating a corrected three-dimensional volume image or a corrected tomosynthesis based image or a corrected cephalometric image of a patient based on the artefact corrected projection images.
A dental restoration (1), wherein the dental restoration comprises zirconium dioxide stabilized with at least one stabilizing oxide, wherein the dental restoration (1) comprises a dentin (3), an incisal (4) and at least one transition region (5), wherein the dentin (3) extends within the incisal (4), wherein the dentin (3) and the incisal (4)) comprise each at least one shading oxide of a metal element, wherein the dental restoration is produced from a blank (1'), wherein the blank comprises a core region (3'), a shell region (4'), wherein the core region (3') and the shell region (4') comprise each at least one shading oxide of a metal element, wherein in at least one horizontal plane (9) of the dental restoration (1) there are at least three sections of different composition, translucency, chromaticity and mechanical properties.
A blank (1) for use in preparing a dental restoration (2) such as a dental framework, in particular a dental bridge, the blank comprises at least one shading oxide of at least one metal element, wherein the blank comprises a core region (3), a shell region (4) and at least one transition region selected from the group comprising (9a), (9b), (9c) and (9d), wherein the core region (3) comprises at least one basic body having a substantially conical shape (5) and at least one basic body having a substantially trapezoidal shape (6), wherein the at least one basic body having a substantially conical shape (5) and the at least one basic body having a substantially trapezoidal shape (6) are merged one into another.
An intelligent restoration proposal including using an input resource to segment a 3D jaw model to obtain a segmented missing or unhealthy teeth and omitting the segmented missing or unhealthy teeth from the 3D jaw model to obtain a modified 3D jaw model. The modified 3D jaw model is used as input to a restoration proposal module to propose an output restoration. The restoration proposal module is operated as a machine learning engine. The restoration proposal is trained using a database that includes healthy teeth.
G16H 20/30 - ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to physical therapies or activities, e.g. physiotherapy, acupressure or exercising
An intelligent restoration proposal including using an input resource to segment a 3D jaw model to obtain a segmented missing or unhealthy teeth and omitting the segmented missing or unhealthy teeth from the 3D jaw model to obtain a modified 3D jaw model. The modified 3D jaw model is used as input to a restoration proposal module to propose an output restoration. The restoration proposal module is operated as a machine learning engine. The restoration proposal is trained using a database that includes healthy teeth.
The present disclosure relates to a dynamic self-adaptive reciprocal motor movement optimized for root canal treatment with endodontic files. A smart motor movement is configured to continuously self-adapt its settings in a smooth manner without sudden drastic motor movement changes. This can be obtained by continuously changing motor parameters in response to instantaneous torque measurements, and also taking into consideration the torque evolution instead of merely reacting to the instantaneous torque imposed on the file.
The present disclosure relates to a dynamic self-adaptive reciprocal motor movement optimized for root canal treatment with endodontic files. A smart motor movement is configured to continuously self-adapt its settings in a smooth manner without sudden drastic motor movement changes. This can be obtained by continuously changing motor parameters in response to instantaneous torque measurements, and also taking into consideration the torque evolution instead of merely reacting to the instantaneous torque imposed on the file.
A computer-implemented method for reconstructing a dental DVT image, including: (S1) providing a sinogram acquired through an extraoral dental X-ray device during a rotation of at least 180 degrees around a patient's head and an initial projection geometry; (S2) geometry calibration through varying the projection geometry and evaluating the varied projection geometry using data consistency constraints derived from a first volume generated from the sinogram using the varied projection geometry in a first reconstruction method, the first reconstruction method using first reconstruction parameters; (S3) generating a final volume with a final reconstruction method using the varied projection geometry and final reconstruction parameters from the sinogram, the first reconstruction parameters of the first reconstruction method and the final reconstruction parameters of the final reconstruction method differing in at least one reconstruction parameter.
A local coil may have a mounting, at least one antenna, and a flexible element. The mounting may position the local coil in a specified position relative to the head of a patient, where the antenna may receive high-frequency signals in a frequency and power range of a magnetic resonance (MR) measurement. The flexible element may at least partly form the local coil on the surface contour of the patient's head. The local coil may at least partly surround the patient's head when the local coil is positioned during use, and a section of the local coil including the antenna can be positioned on the patient's temporomandibular joint using the mounting. The local coil may receive MR signals of the temporomandibular joint using the antenna. A MR device may include the local coil and detect MR signals of a region of the patient using the local coil.
A dental treatment unit with a water unit including a water collector with an inlet for water and cleaning chemicals and an outlet; a removable instrument hose adapter for plugging into a first slot of the water collector, the instrument hose adapter having one or more openings for connecting instrument hoses. In the plugged-in state the openings are in fluid communication with the outlet. The dental treatment unit also includes; a removable suction hose adapter for plugging into a second slot of the water collector, the suction hose adapter having one or more openings for connecting suction hoses, in the plugged-in state the openings are in fluid communication with the inlet. Further, the instrument hose adapter and the suction hose adapter are designed to be interchangeable with one another, so that each can be optionally plugged into the first slot or into the second slot.
The disclosure relates to a 3D printer including: a vat having an at least partially transparent bottom for receiving liquid photoreactive resin for producing a solid component; a building platform for pulling the component layer by layer out of the vat; a projector for projecting the layer geometry onto the transparent bottom; a transport apparatus for moving the building platform at least downward or upward in the vat; and a receiving apparatus for detachably connecting the building platform to the transport apparatus. The receiving apparatus includes a pivoting device for pivotally holding the building platform and is adapted to abut the underside of the building platform parallelly onto the transparent bottom of the vat when lowered by the transport apparatus. The 3D printer is provided without for the ability to completely block the pivotal movement of the pivotably held building platform.
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
B29C 64/236 - Driving means for motion in a direction within the plane of a layer
B29C 64/255 - Enclosures for the building material, e.g. powder containers
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
14.
DENTAL COIL AND MAGNETIC RESONANCE DEVICE FOR IMAGING A JAW REGION
A dental coil comprises a first element and a second element. The first element is composed of a dimensionally stable material and has a recess that is configured to receive at least one of a mouth region or a nose region of a patient when the dental coil is positioned on the jaw region of the patient during use. The second element has a flexible element that is configured to allow the flexible element to take the shape of the jaw region of the patient. The first element and the second element have an antenna configured to receive high-frequency signals in a frequency and power range of a magnetic resonance measurement.
A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
G01R 33/34 - Constructional details, e.g. resonators
15.
Local Coil and Magnetic Resonance Apparatus Having a Safety Mechanism for Preventing a Collision with a Patient
A local coil including an antenna, base element, holding element, first and second guide mechanisms, and safety mechanism. The antenna receives high-frequency signals in a frequency range and power range of a magnetic resonance measurement and is mechanically connected to the holding element. The base element holds the holding element together with the antenna in a position for use on a diagnostically relevant body region of a patient. The first guide mechanism is mechanically connected to the base element and the holding element and positions the holding element variably relative to the base element. The second guide mechanism is mechanically connected to the holding element and the antenna and positions the antenna variably relative to the holding element. The safety mechanism prevents a collision between the antenna and the patient during a transfer of the holding element from an open position into a closed position using the first guide mechanism.
G01R 33/34 - Constructional details, e.g. resonators
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
G01R 33/28 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance - Details of apparatus provided for in groups
16.
IMPROVED MOTION ARTIFACT COMPENSATION THROUGH METAL ARTIFACT REDUCTION
A method for geometric calibration of a DVT imaging in the dental field, including: (S1) reconstruction of a first volume from a sinogram with an initial projection geometry; (S2) detection of metal areas in the sinogram; (S3) correction of the metal areas in the sinogram; (S4) reconstruction of a second volume from the corrected sinogram from step (S3) with the initial or a varied projection geometry; (S5) geometrically calibrating by varying the projection geometry and evaluating by a similarity measure between a simulated sinogram of the reconstructed second volume and the sinogram or the corrected sinogram.
A method in which: (a) a patient is positioned in an X-ray device; (b) a 3D scout image with reduced dose and with a predefined volume sizes and a predefined center of rotation is created; (c) on the 3D scout image, a practitioner marks the tooth (d) a software determines, based on the position of the enveloping geometry, the available centers of rotation and calculates, based on reference points of the enveloping geometry, the imaging positions; (e) based on the imaging positions, a center of rotation is selected; (f) the previously determined aperture positions and the detector regions to be irradiated are transmitted; (g) the high-resolution image is reconstructed and the newly acquired high-resolution information is superimposed in the 3D scout image; (h) the practitioner receives the 3D scout image for diagnosis and further use.
A magnetic resonance system may include a magnetic resonance device, an optical imaging device, and a controller. The controller may control the magnetic resonance device to acquire magnetic resonance image data from an object inside an oral cavity of a patient and/or control the optical imaging device to acquire optical data from the object inside the oral cavity of the patient. The controller (e.g., a processor of the controller) may merge the optical data with the magnetic resonance image data.
Disclosed herein is a dental device for delivering fluid continuously while activated in an endodontic application. The dental device includes a hollow needle having a tip end and a connector portion; and a handle. One end of the handle is configured to be affixed to the connector portion of the hollow needle. The opposite end of the handle is capable of being attached to an endodontic handpiece or a sonic agitator for the activation. The connector portion includes at least one tube connector that is an integral part of the connector portion of the hollow needle or a plurality of openings on the connector portion to accommodate the hollow needle to a connector. The connector is a modular fluid delivery connector which is removable from the needle such that it can be reused.
The present invention relates to a dental impression material adapted to be cured by visible light, comprising a compound having one or more aliphatic unsaturated groups, a compound containing at least one silicon-bonded hydrogen atom and not having more than three hydrogen atoms attached to any one silicon atom, a photoactivatable catalyst component, and a specific initiator component.
A microcapsule for use in the treatment of dental malocclusions/misalignments based on plastic splints or aligners. The microcapsule is a few μm, such as 0.5 μm to 200 μm in size and has a shell made of plastic or glass or ceramic, the shell is filled with a liquid in the interior, and the shell breaks open when it experiences a force and releases the liquid, which can be detected optically, for example, by a color change or illumination with UV light.
G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
22.
OPTIMIZATION OF EXTRAORAL PANORAMIC IMAGES THROUGH MODEL-BASED PRIOR KNOWLEDGE OF THE PATIENT'S JAW ARCH FORM
The disclosure relates to a method including: (S1) Determining the jaw arch form as a model-based prior knowledge about the anatomy of a patient based on one or more previous panoramic images or 3D images or one or more optical 3D scans of the patient; (S2) Determining a patient-specific x-ray device imaging trajectory for the panoramic image of the patient; (S3) Performing the imaging on the basis of the determined patient-specific x-ray device imaging trajectory to acquire imaging data; (S4) Adjusting reconstruction parameters according to the determined patient-specific x-ray device imaging trajectory; (S5) Determining the patient-specific focal curve for the panoramic image of the patient to be produced by using the model-based prior knowledge; (S6) Reconstructing the panoramic image using the acquired imaging data, the adjusted reconstruction parameters including the determined patient-specific focal curve, and a layer to be imaged which overlaps with the determined jaw arch
The disclosure relates to a method for processing a digital dental impression including: displaying an image of the digital dental impression; the image including: a shaded region representative of a part of the oral anatomy which is relevant for a dental procedure, and the shaded region being enclosed within a boundary; and an unshaded region representative of a part of the oral anatomy which is not relevant for a dental procedure. The unshaded region and the shaded region are separated from each another by the boundary. The method includes; receiving user input for altering the shaded region and/or unshaded region; detecting completion of a stroke generated by the user input; altering, the shaded region and/or the unshaded region, in response to the stroke completion. The present teachings also relate to a method for processing digital three-dimensional shapes, a dental procedure assisting system, uses and computer software products.
The present invention relates to a method for automatically generating a reprojection panoramic view (RPV) from a dental DVT volume of a patient, which is aligned with the course of the mandibular canal, comprising the following steps; (S1) localization of the mandibular canal, (S2) automatic definition of a projection region of the RPV, which comprises the following sub steps: (S2.1) automatically setting a guide curve in a plane perpendicular to the patient longitudinal axis using the localized mandibular canal; (S2.2) automatically defining a variable or constant thickness profile along the guide curve; (S2.3) Extruding the area defined by guide curve and thickness profile along the patient longitudinal axis; and (S3) generating the RPV by reprojecting the DVT volume in the defined projection region.
Aspects relates to a 3D printer including a vat having an at least partially transparent bottom for receiving liquid photoreactive resin to produce a solid component; a building platform for holding and pulling out the component layer by layer from the vat; a projector for projecting the layer geometry onto the transparent bottom; a transport apparatus for at least downward and upward movement of the building platform in the tray; and a control device for controlling the projector and the transport apparatus. The control device optimally feed forward controls the pull-off movement of the build platform in the 3D printer using a neural network.
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
27.
IMPROVED METAL ARTIFACT REDUCTION THROUGH MOTION ARTIFACT COMPENSATION
Aspects relate to a method for reconstructing a digital volume tomography (DVT) imaging in the dental field including (S1) estimating the projection geometry from the sinogram of a patient imaging using motion artifact compensation (MAC); (S2) reconstructing a first volume using the estimated projection geometry; (S3) detecting the metal regions in the sinogram and in the first volume using the first volume and the estimated projection geometry; (S4) correcting the metal regions in the sinogram and generating a corrected sinogram; (S5) reconstructing a second volume with the estimated projection geometry and the corrected sinogram; and (S6) correcting the metal regions in the second volume.
The present invention relates to an intraoral X-ray sensor for use with an intraoral X-ray system having an automatic exposure control (AEC) functionality, characterized in that the intraoral X-ray sensor includes an exposure analysis unit, an imaging X-ray detector, and a communication interface, wherein a scout shot or scout video stream received from the imaging X-ray detector is analyzed by the exposure analysis unit in the intraoral X-ray sensor in order to record information on the exposure level of the scout image or video stream and to forward this information by means of the communication interface to a decision unit of the intraoral X-ray system, which is arranged externally to the intraoral X-ray sensor, and adapted for evaluation and decision of further exposures.
The present teachings relate to a method for transforming a digital 3D dental model to a 2D dental image, the method including: providing, at least two selected images from the 3D dental model; converting, each of the selected images, to a respective color component of a color model; obtaining, by combining the respective color components, the 2D image in a computer-readable format of the color model. The present teachings also relate to a method of classification of the 2D image, a dental procedure assisting system, uses and computer software products.
An aligner for use in the treatment of malocclusions/misalignments by using force measurement of the aligner on the teeth. The aligner has at least two referencing features located on it in the initial state. The referencing features are of such a size, about or at least 10 micrometers, that they can be accurately detected by a camera or other means. The referencing features are of an optical or topographic kind.
The present invention relates to an esthetic, robust, hybrid, biomimetic and fast grindable and printable dental composition containing an inorganic material in the form of platelets, and an organic material. The invention also relates to dental restorations made from the dental compositions.
Aspects relate to geometric calibration of a DVT imaging, by updating the geometric parameters used in a reconstruction method, in which the updating of the geometric parameters is supported by a first correction method based on machine learning (ML) by using the result of a first correction method as a reference for a second correction method for parameter estimation, and in which the second correction method for parameter estimation involves the measurement data of the DVT imaging, which includes the following steps: (S1) providing the measurement data of the DVT imaging and the geometric parameters; (S2) providing a first volume by applying a reconstruction method to the provided measurement data and the geometric parameters; (S3) providing a corrected volume by applying the first correction method to the first volume; (S4) providing updated geometric parameters by applying the second correction method to the measurement data and the corrected volume.
The disclosure relates to a hygiene cover for preventing a contamination of a target surface of a medical imaging device. The hygiene cover is configured for reversibly attaching to the target surface of the medical imaging device and/or a body region of a patient, and the reversible attachment is configured to provide for maintaining a predefined relative position of the hygiene cover to the medical imaging device.
The invention relates to additively manufactured dental devices comprised of a denture base and at least one removable bracing body joined at specific locations to the denture base. The invention also relates to methods of using these additively manufactured dental devices in the fabrication of dental prostheses.
A61C 13/36 - Orienting or positioning of artificial teeth, e.g. determining precise location or attitude therefor
B29C 64/135 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
The present teachings relate to a method for assisting an intraoral scan including providing an intraoral image of a patient, and providing an extraoral image; the extraoral image being representative of the position of an extraoral scanner part. The teaches further include generating, using the intraoral image and the extraoral image, a mapping function correlating the position of the extraoral scanner part with the position of the intraoral scanner part; and computing, using the mapping function, a desired extraoral position of the extraoral scanner part; the desired extraoral position corresponding to a preferable intraoral position of the intraoral scanner part. The present teachings also relate to a system, a device, a use, data, and a storage medium.
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
The present invention relates to a dental composition comprising a specific radically polymerizable compound and a radical initiator system. Furthermore, the present invention relates to the specific radically polymerizable compound and its use in a dental composition. The specific radically polymerizable compound of the present invention has an allyl (meth)acrylamide group and a phosphoric acid ester group.
The present invention relates to a dental treatment unit (1) comprising: a chair (2) for seating a patient; a hand-held instrument (6) having an ultrasonic actuator, an electric motor, or turbine for driving a dental tool (7), and a nozzle (8) for ejecting a water spray (9) for moistening or cooling the dental tissue (24) or tooth (25) of the patient being treated; a fluid supply device (16) for suppling pressurized water to the nozzle (8), wherein the fluid supply device (16) has at least one electrically or pneumatically controllable water valve (21) for adjusting the water spray (9) ejected by the said nozzle (8), characterized in that the fluid supply device (16) is adapted to automatically generate a driving signal (S3) having a sequence of pulses that control the water valve (21) in order to turn the water spray (9) sequentially on/off.
The present invention relates to a method for measuring the length of structures displayed in a panoramic image (1a, 1b) of a patient, comprising: (S1) defining a 3D surface (2) describing in space the positions of patient's mapping points to be reconstructed in a panoramic imaging; (S2) providing projection images of the panoramic imaging, wherein the projection images have image points which depict the mapping points (S) of the 3D surface (2); (S3) determining the projection geometries of the individual projection images on the basis of their imaging times and imaging course during the panoramic imaging, wherein the projection geometries describe the spatial relationship of the projection images to the 3D surface (2); (S4) determining the image points in the projection images which depict the mapping points (S) of the 3D surface (2) to be reconstructed by using the projection geometries of the projection images; (S5) generating a panoramic image (1a, 1b) by summing the values of the determined image points within the projection images which depict the same mapping point (S) of the 3D surface (2) to be reconstructed; (S6) length measurement between two image points (P1, P2; P1`, P2`) on the generated panoramic image (1a; 1b) using the corresponding positions of the mapping points (S1, S2; S1`, S2`) within the 3D surface (2), wherein the length (L; L`) is calculated either along the shortest path (W) in space or along a path (W`) on the 3D surface (2); (S7) outputting the result of the length measurement by means of an output device.
Manufacturing a dental part with volumetric units that vary in translucency, shading and/or color. A beam translation module of a 3D printing system is used to translate an input pattern into an output for controlling a spatial structuring of light for 3D printing an object from a resin material that is sensitive to light intensity, light color or light exposure time.
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
A61K 9/00 - Medicinal preparations characterised by special physical form
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
B33Y 80/00 - Products made by additive manufacturing
B29C 71/04 - After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation
41.
CONTROLLED LOCAL MODIFICATION OF VOLUMETRIC PHYSICAL PROPERTIES
Manufacturing a dental part with volumetric units that vary in translucency, shading and/or color. A beam translation module of a 3D printing system is used to translate an input pattern into an output for controlling a spatial structuring of light for 3D printing an object from a resin material that is sensitive to light intensity, light color or light exposure time.
The present invention relates to a dental treatment unit (1) comprising: a chair (2) for seating the patient; a chair base (3) for holding the chair (2); a water tower (4) for cleaning/sanitizing dental instruments (5); a dentist's element (6) for depositing the dental instruments (5); an assistant element (7) for depositing dental instruments (5); at least one movable projector (8) for projecting images; at least one movable camera (9) for acquiring image data; a microphone (10) for acquiring acoustic data; a loudspeaker (11); and a computer (12) for controlling the projector (8), the camera (9), the microphone (10), the loudspeaker (11), and for processing the acquired image data and the acquired acoustic data, wherein the projector (8) is configured to project images onto a projection area (13), wherein the camera (9) is configured to acquire image data from the projection area (13), wherein the projection area (13) can be selectively moved in at least one of a plurality of different positions (14-20) which are defined relative to location and geometry of the chair (2), the chair base (3), the water tower (4), the dentist's element (6), and the assistant's element (7).
05 - Pharmaceutical, veterinary and sanitary products
Goods & Services
Dental zirconia ceramic block for the fabrication of
individually designed restorations using a CAD/CAM
procedure; materials for use in making dental prosthetics,
dental crowns, artificial teeth, dentures and denture parts;
dental composite materials; dental ceramic material.
In a method for masking one or more regions surrounding an anatomical region of interest for each of one or more MRI images obtained from MRI imaging data, the one or more regions surrounding the anatomical region of interest are masked based on control data determined for identifying the anatomical region of interest in the MRI imaging data. The MRI imaging data may be obtained during an MRI exam of a patient for a measurement volume including the anatomical region of interest. The anatomical region of interest may be ascertained before performing the MRI exam.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
The present invention relates to an extraoral x-ray system (1) suitable for dental panoramic imaging of a patient, comprising: an x-ray emitter array (3) having at least two individual x-ray emitters (3a; 3b; 3c) each for emitting x-rays, and offset at least along a predetermined direction; and an x-ray detector (4) for at least partially detecting the x-rays emitted by the individual x-ray emitters (3a; 3b; 3c) during one revolution, wherein the x-ray emitter array (3) and the x-ray detector (4) being arranged for movement relative to one another about an axis running parallel to the said predetermined direction, wherein the areas of the x-ray detector (4) respectively irradiated by the individual x-ray emitters (3a; 3b; 3c) at least partially overlap; an aperture means for collimating the x-ray radiation emitted by the individual x-ray emitters (3a; 3b; 3c) to the respective areas to be irradiated; a control device for moving the x-ray emitter array (3) and the x-ray detector (4) about the said parallel running axis, and for controlling the individual x-ray emitters (3a; 3b; 3c) and for reading out the image series of the respective irradiated areas of the X-ray detector (4) during the said revolution; a computing unit for generating one panoramic image (16) of a layer to be sharply imaged by using said at least two image series, the computing unit being configured to apply a weighting of image pixels when generating the said one panoramic image (16), wherein the said image pixels belong to at least the two image series.
A handpiece (108) of an ultrasonic scaler equipped with a closed system water delivery and an integrated in-line divided electrolytic cell (106) for generating ozone, one or more gas separators (116a, 116b), in-line dissolved gas monitoring and closed loop control over ozone concentration using one or more ultraviolet sensors (110).
Dental treatment unit comprising a seat together with a basin for rinsing the mouth and/or an examination lamp and/or a console for holding dental handpieces and/or an instrument tray and/or a dental video display and/or monitors.
A dental tool (1) for use in a dental CNC milling/grinding machine for machining a dental restoration from a workpiece (6), the dental tool (1) has a shaft (2). The dental tool includes a miniaturized RFID tag (3) which is arranged in front of the back end (2a) of the shaft (2). A dental CNC milling/grinding machine (5) is also disclosed and has a machine compartment (5a) including one or more carriage units (5b) each adapted to exchangeably receive and drive one or more dental tools (1) for machining a dental restoration from a workpiece (6); one or more transceiver units (5c) each adapted to read and/or write the miniaturized RFID tag (3) of a dental tool (1); and a control unit adapted to control the transceiver units (5c), and the carriage units (5b) based on the information read from the miniaturized RFID tags (3).
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
Dental and endodontic instruments, devices, equipment and
apparatus; orthodontic instruments, devices, equipment, and
apparatus; dental and endodontic instruments, namely
endodontic files; parts and fittings for the aforesaid
goods.
53.
METHOD FOR THE PRODUCTION OF A BLANK, BLANK AND A DENTAL RESTORATION
The invention relates to a method for the production of a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a mold and wherein the materials are pressed and after pressing are sintered. Thereby, a layer of the first ceramic material is filled into the mold, a first open cavity is formed in the layer, the second ceramic material is filled into the first open cavity and the materials are pressed together and are then heat-treated. Both the first ceramic material and the second ceramic material contain, or consists of, lithium silicate glass ceramic.
B29C 43/14 - Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
The present invention relates to a dental handpiece (1) comprising: a head (4); a clamping means (13) which is rotatably arranged within a bearing (19) inside the head (4), and adapted for releasably clamping a dental drill (2), wherein the bearing (19) has an inner race (21) fixed to the clamping means (13) and an outer race (21) fixed to a housing (5) of the head (4); a driving means for rotating the clamping means (13) about an axial direction of the dental drill (2); a push button (7) which is arranged movably in the head (4) along the axial direction and configured to actuate the clamping means (13) to release the dental drill (2); and a biasing means to move the push button (7) away from the clamping means (13); characterized in that a radial inner surface (7a) of the push button (7) is arranged to contact and slide on a radial outer surface (20a) of the outer race (20) which configures a guide (12) for the moving push button (7), wherein the radial direction is perpendicular to axial direction of the dental drill (2); and wherein a radial clearance (A) is arranged between a radial inner surface (5a) of the housing (5) and a radial outer surface (7b) of the push button (7).
The present invention relates to a dental handpiece (1) comprising: a dental handpiece (1) comprising: a head (4); a rotatable hollow shaft (15) which is rotatably arranged inside the head (4); a driving means for rotating the hollow shaft (15); a chuck (26) having resilient arms (27) for releasably clamping a dental drill (2), wherein the chuck (26) is fixed into the hollow shaft (15) so as to rotate with same; a ball (14) which is axially movably arranged inside the rotatable hollow shaft (15) and in direct contact with the resilient arms (27) of the chuck (26), wherein the ball (14) partly protrudes through an opening (17) on the upper end of the hollow shaft (15), and wherein the opening (17) is smaller than the size of the ball (14); a push button (7) which is arranged in the head (4) and configured to contact, when pressed by a user, the partly protruding ball (14) and move the ball (14) downwardly in between the resilient arms (27) so as flex the resilient arms (27) radially outwards and release the dental drill (2), wherein the resilient arms (27) bias the ball (14) inside the rotatable hollow shaft (15) towards the opening (17); and a biasing means to move the push button (7) away from the ball (14), wherein the push button (7) is not in contact with the ball (15) when it is released.
The present invention relates to methods for curing polymeric dental appliances comprised of partially cured photopolymerizable components, especially for additively manufactured denture base and artificial tooth components utilized in the production of full and partial dental prostheses. In particular, the invention relates to methods of utilizing a curing apparatus having one or more controllable heating sources and one or more controllable LED light sources to achieve specific preheating and light curing conditions for more effectively converting partially cured photopolymerizable components from a partially cured state to a final cured state.
The present invention relates to methods for curing polymeric dental appliances comprised of partially cured photopolymerizable components, especially for additively manufactured denture base and artificial tooth components utilized in the production of full and partial dental prostheses. In particular, the invention relates to methods of utilizing a curing apparatus having one or more controllable heating sources and one or more controllable LED light sources to achieve specific preheating and light curing conditions for more effectively converting partially cured photopolymerizable components from a partially cured state to a final cured state.
The present invention relates to a process for producing a composite material with reduced porosity by applying a vacuum to the mixing container before actual mixing steps. The composite material comprises a monomer mixture and a glass filler or a blend of glass fillers. The monomer mixture comprises at least one polymerizable monomer, a polymerization initiator and a polymerization stabilizer. Optionally, the composite material may comprise at least one pigment. The porosity of the composite material was determined and the porosity was compared with the porosity of the composite material produced by a process wherein a vacuum was not applied before all of the mixing steps. The preferred mixing container of the processes of the present invention is a planetary mixer or a centrifugal mixer. The composite material is for use in the dental industry.
The present teachings relate to a method for improving usability of dental imaging data, comprising: providing imaging data comprising a plurality of different images of at least one dental imaging modality of a patient; providing metadata for each of the images; selecting one or some of the images; retrieving in response to the selection at least one another image; wherein the retrieval is performed by comparing metadata of at least one of the selected images and metadata of at least one of the retrieved images. The present teachings also relate to systems, software products and storage media.
G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
G16H 30/40 - ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing
A61B 6/14 - Applications or adaptations for dentistry
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
A method for optical intraoral imaging of an oral anatomy via an intraoral scanner, comprising: providing initial data related to the oral anatomy and/or the intraoral scanner; computing, using the initial data, a number of intraoral images to be captured via the intraoral scanner; acquiring, via the intraoral scanner, said number of intraoral images at a given location at the oral anatomy; rendering, from at least one of the acquired intraoral images and the initial data or from a plurality of the acquired intraoral images, a more optimally exposed two-dimensional intraoral image. The present teachings also relate to systems, a dental scanner, software products, uses and storage media.
G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
The present teachings relate to an assembled dental implant comprising a metallic body manufactured at least partially via an additive manufacturing process; wherein the body is provided with a cavity having an opening on one end of the body, and an inlay part at least partly introduced within the cavity and sealably connected with the metallic body thereby sealing-off the cavity. The present teachings also relate to the metallic dental implant body and manufacturing methods.
The present invention is related to a dental composition comprising at least one polymerizable monomer having at least one ethylenically unsaturated group; and a radical initiator system comprising a photosensitizer having an absorption maximum ranging from 400 nm to 800 nm; and at least one thiophenium compound as coinitiator.
05 - Pharmaceutical, veterinary and sanitary products
Goods & Services
(1) Materials for use in making dental prosthetics, dental crowns, artificial teeth, dentures and denture parts; dental composite materials; dental ceramic material.
(2) Dental zirconia ceramic block for the fabrication of individually designed restorations using a CAD/CAM procedure.
A method for determining the optimum relative position of at least one sensor and/or at least one imaging source of an imaging device for at least one intraoral imaging, and for the non-overlapping imaging of at least two tooth root canals. The disclosure also relates to a sensor holder (1) for intraoral imaging including at least one biting device (2) that is insertable into the mouth of a patient, at least one holding device (3) at least indirectly engaged with the biting device (2) for fixing at least one sensor, and at least one centering device (4) for aligning at least one imaging device. The centering device (4) is at least indirectly in operative connection with the biting device (2) via at least one centering device holding portion (5).
An artificial anterior tooth having a more naturalistic or lifelike appearance for use in the design and/or production of a dental prosthesis and/or dental restoration is provided. The lingual-facing surface of an artificial anterior tooth is provided with a plurality of furrows in predetermined locations on the lingual-facing surface to correspond with a plurality of furrows on the labial-facing surface in predetermined locations on the labial-facing surface, so as to impart variable, lifelike color and/or translucency properties throughout the tooth.
An artificial anterior tooth having a more naturalistic or lifelike appearance for use in the design and/or production of a dental prosthesis and/or dental restoration is provided. The lingual-facing surface of an artificial anterior tooth is provided with a plurality of furrows in predetermined locations on the lingual-facing surface to correspond with a plurality of furrows on the labial-facing surface in predetermined locations on the labial-facing surface, so as to impart variable, lifelike color and/or translucency properties throughout the tooth.
Capturing obscured areas in an oral cavity of a patient by providing a dental instrument with a camera to capture at least an area of operation of the dental instrument and comparing two-dimensional (2D) images from the camera with a three-dimensional (3D) model of the patient's jaw to compute a position of the camera or dental instrument in relation to the patient's jaw. Information about a deviation of one or more actual dental process parameters from one or more corresponding planned dental process parameters are displayed.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A61C 19/04 - Measuring instruments specially adapted for dentistry
An apex locator attachment for connection to an apex locator for measurement of the position of the length of a root canal during endodontic treatment. A shape, structure and dimensions of the attachment are configured to maximize the ease of use of the attachment and to enable mechanical and electrical coupling of a dental instrument to an apex locator while allowing the apex locator attachment to be easily cleaned, disinfected and autoclaved.
A61C 5/42 - Files for root canals; Handgrips or guiding means therefor
A61C 19/04 - Measuring instruments specially adapted for dentistry
A61C 5/44 - Means for controlling working depth, e.g. supports or boxes with depth-gauging means, stop positioners or files with adjustably-mounted handles
78.
MANIFOLD COMPATIBLE ELECTROLYTIC CELL (EO CELL) WITH COPLANAR FLUIDIC AND ELECTRICAL CONNECTION SCHEME
An electrolytic ozone cell that a housing that includes an interfacial seal, a top plate, and bottom plate. The electrolytic ozone cell also includes an internal compartment that having a pair of contact plates, and a tolerance compressor. The tolerance compressor compresses an electrode-membrane-electrode stack that is disposed between the pair of contact plates and the tolerance compressor alters its shape in order to maintain compressive forces on the electrode-membrane-electrode stack.
Capturing obscured areas in an oral cavity of a patient by providing a dental instrument with a camera to capture at least an area of operation of the dental instrument and comparing two-dimensional (2D) images from the camera with a three-dimensional (3D) model of the patient's jaw to compute a position of the camera or dental instrument in relation to the patient's jaw. Information about a deviation of one or more actual dental process parameters from one or more corresponding planned dental process parameters are displayed.
Dental implants; dental implant accessories; artificial
teeth; dental instruments; dental tools; dental apparatus;
dental implants and accessories, namely dental crowns,
dental bridges, dental prostheses; instruments and tools for
surgical and dental purposes and for use in dental
laboratories, namely, drills, cylinders, and screw implant
drivers.
(1) Dental and endodontic instruments, devices, equipment and apparatus; orthodontic instruments, devices, equipment, and apparatus; dental and endodontic instruments, namely endodontic files; parts and fittings for the aforesaid goods.
(2) Endodontic apparatus
The present invention relates to a method for improving digital dentistry comprising: providing a 3D digital impression of a craniofacial anatomy; the digital impression described in terms a plurality of cells, providing a database of a plurality of dental procedures and their corresponding criteria for allowing applicability; analyzing the cells with respect to the criteria; determining, in response to the analysis, which of the dental procedures the digital impression is usable for and which of the dental procedures the digital impression is not usable for.
G16H 40/20 - ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
G16H 70/20 - ICT specially adapted for the handling or processing of medical references relating to practices or guidelines
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A method for generating a panoramic image with reduced overlapping of neighboring teeth, including: acquiring 2D x-ray images respectively at a different radiographic directions by a rotating an x-ray source and an x-ray detector around the jaw of a patient. It includes a step of identifying one or more regions each including at least one pair of overlapping neighboring teeth in the 2D x-ray images and/or in temporary panoramic images reconstructed from the 2D x-ray images for which an optimal radiographic directions are determined, among the corresponding radiographic directions, which reduces the overlap in the panoramic image to be reconstructed. It includes determining one or more optimal radiographic directions respectively among the corresponding radiographic directions of the 2D x-ray images for which one or more regions each including at least one pair of overlapping neighboring teeth has been identified, to reduce the overlaps in the panoramic image to be reconstructed.
A 3D printing system that includes a first light source and a second light source. The first light source emits a first light beam having a first wavelength that initiates polymerization of a photosensitive resin and the second light source emits a second light beam having a second wavelength that inhibits polymerization of the photosensitive resin. A dichroic mirror is placed in an optical path of the 3D printing system to superimpose the first and second beams, a digital micromirror device (DMD) spatially structures the superimposed first and second light beams into a spatial pattern as a spatially structured superimposed light beam, and a single optical system in the optical path projects the spatially structured superimposed light beam onto the photosensitive resin.
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/135 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
A 3D printing system that includes a first light source and a second light source. The first light source emits a first light beam having a first wavelength that initiates polymerization of a photosensitive resin and the second light source emits a second light beam having a second wavelength that inhibits polymerization of the photosensitive resin. A dichroic mirror is placed in an optical path of the 3D printing system to superimpose the first and second beams, a digital micromirror device (DMD) spatially structures the superimposed first and second light beams into a spatial pattern as a spatially structured superimposed light beam, and a single optical system in the optical path projects the spatially structured superimposed light beam onto the photosensitive resin.
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 80/00 - Products made by additive manufacturing
Dental instruments, devices, equipment and apparatus;
filling instruments for dental purposes; dental instruments
and tools for shaping dental filling materials.
91.
DENTAL TREATMENT SYSTEM FOR LOCATING THE APEX OF A TOOTH
The present invention relates to a dental treatment system (13) for locating the apex of a tooth of a patient, the system comprising: a lip clip (2) having a first electrode (3) attachable to the lip of the patient; a motorized handheld dental device (21) having a housing (22) which comprises: a rotating hub (23) for receiving an endodontic file (4) to be inserted in the root canal of the tooth of the patient; a second electrode (6) connected to the rotating hub (23); and an illuminating means (24) which is adapted to emit visible light (25) and mounted into the housing (22) at a location such that it projects light onto the distal end of the endodontic file (4); an electrical measurement unit (8) which is connectable to both the lip clip (2) and the motorized handheld dental device (21), and further adapted to locate the apex of the tooth based on a measurement of the electrical impedance between the first electrode (3) and the second electrode (6), and an optical output unit (10) adapted to output a signal indicative of the located apex, wherein the signal changes the illumination state of illuminating means (24) in accordance with the distance of the endodontic file (4) to the apex.
A method for visualizing a dental condition, comprising: projecting color-coded pattern type by means of an intraoral scanner; providing a plurality of projection images of the dental condition; detecting one or more anatomical features in each of the projection images; - removing color-coded pattern information from at least one of the projection images; rendering, via machine learning, color information to the one or more anatomical features in the projection images to generate corresponding an at least partially artificially colorized plurality of projection images wherein the pattern information is removed through the rendering. The present teachings also relate to a system, an intraoral scanner, software product and a storage medium.
A circumferential matrix system having a matrix band and a body, such that the body comprises a handle, a housing and a base, and a spindle within the body is attached to the handle. The matrix band on one end is permanently affixed to the spindle and the matrix band on another end is permanently affixed to an inside wall of the housing. The circumferential matrix system can be tightened around a tooth without the need or use of a retaining ring.
The present invention relates to an additive manufacturing apparatus (1) for additively manufacturing a component (2), comprising: a resin vat unit (3) which comprises: a reservoir (4) for storing UV light photocurable resin (5); and a UV-transparent window (6-4) at the bottom of the reservoir (4), wherein said UV-transparent window (6-4) includes a UV-1 transparent plate (6-4a) and a UV-transparent anti-adhesive flexible foil (6-4b); a projection unit (7) for projecting UV light (8) through the UV-transparent window (6-4) into the reservoir (4); a movable building platform (9) having a surface (9a) onto which said component (2) can be formed through layerwise curing of said resin (5). The UV-transparent window (6-4) further comprises: an optical means (6-5) which is adapted to diffuse the projected UV light (8) towards the building platform (9) into a region (R) where the UV light photocurable resin (5) is to be layerwise cured, wherein the optical means (6-5) is arranged in the light path of the projected UV light (8).
B29C 64/129 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
B29C 64/291 - Arrangements for irradiation for operating globally, e.g. together with selectively applied activators or inhibitors
B29C 64/259 - Enclosures for the building material, e.g. powder containers interchangeable
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
The present invention relates to an additive manufacturing apparatus (1) for additively manufacturing a component (2), comprising: a resin vat unit (3) which comprises: a reservoir (4) for storing UV light photocurable resin (5); and a UV-transparent window (6-4) at the bottom of the reservoir (4), wherein said UV-transparent window (6-4) includes a UV-1 transparent plate (6-4a) and a UV-transparent anti-adhesive flexible foil (6-4b); a projection unit (7) for projecting UV light (8) through the UV-transparent window (6-4) into the reservoir (4); a movable building platform (9) having a surface (9a) onto which said component (2) can be formed through layerwise curing of said resin (5). The UV-transparent window (6-4) further comprises: an optical means (6-5) which is adapted to diffuse the projected UV light (8) towards the building platform (9) into a region (R) where the UV light photocurable resin (5) is to be layerwise cured, wherein the optical means (6-5) is arranged in the light path of the projected UV light (8).
B29C 64/129 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 80/00 - Products made by additive manufacturing
B29C 64/259 - Enclosures for the building material, e.g. powder containers interchangeable
B29C 64/291 - Arrangements for irradiation for operating globally, e.g. together with selectively applied activators or inhibitors
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A method for forming a multi-layer blank of a ceramic material including the steps of: providing a mold that includes at least one side wall surrounding a lower press plunger to form a cavity therebetween, wherein the lower press plunger has a movable pin; filling into the mold a first ceramic material; extending the movable pin from an upper surface of the lower press plunger and into the cavity; pressing a first upper press plunger against the first ceramic material so that a first open cavity is formed while at least a portion of the first upper press plunger is in contact with the movable pin to maintain the through-hole through the first layer; filling into the mold a second ceramic material of a different composition; extending the movable pin from an upper surface of the first layer and into the first open cavity; and pressing a second upper press plunger against the second layer so that a second open cavity is formed in communication with the through-hole that extends through the first and second layers to form the blank.
B28B 3/08 - Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with two or more rams per mould
B28B 11/24 - Apparatus or processes for treating or working the shaped articles for curing, setting or hardening
98.
METHOD FOR PRODUCING A MULTI-LAYER BLANK WITH A THROUGH-HOLE
A method for forming a multi-layer blank of a ceramic material including the steps of: providing a mold that includes at least one side wall surrounding a lower press plunger to form a cavity therebetween, wherein the lower press plunger has a movable pin; filling into the mold a first ceramic material; extending the movable pin from an upper surface of the lower press plunger and into the cavity; pressing a first upper press plunger against the first ceramic material so that a first open cavity is formed while at least a portion of the first upper press plunger is in contact with the movable pin to maintain the through-hole through the first layer; filling into the mold a second ceramic material of a different composition; extending the movable pin from an upper surface of the first layer and into the first open cavity; and pressing a second upper press plunger against the second layer so that a second open cavity is formed in communication with the through-hole that extends through the first and second layers to form the blank.
Surgical apparatus and instruments; surgical implants comprising artificial material and associated surgical instrument sets; implants consisting of artificial materials; medical apparatus, namely, implantable ports
