Method For Determining An Internal Structure Of A Dental Prosthesis Base, Method For The Production Of A Dental Prosthesis Base, Dental Prosthesis Base, Data-Processing Device, Computer Program And Computer-Readable Medium
A method for determining an internal structure of a dental prosthesis base. The method includes obtaining outer shell data of the dental prosthesis base. Gum ridge line data are obtained. A first reference line is defined by parallel displacement of the gum ridge line or the gum ridge line is defined as a first reference line. A first reference point is defined which lies above or below the dental prosthesis base. A first separation surface is defined as a surface which comprises all straight lines which extend through the first reference point and through the first reference line. At least one sub-volume of the dental prosthesis base is deduced as volume delimited by the first separation surface and the outer shell. A dental prosthesis base is presented. A data-processing device, a computer program and a computer-readable medium are also described.
METHOD FOR DETERMINING THE INTERNAL STRUCTURE OF A DENTAL PROTHESIS BASE, METHOD FOR PRODUCING A DENTAL PROTHESIS BASE, DENTAL PROTHESIS BASE, DATA-PROCESSING DEVICE, COMPUTER PROGRAM, AND COMPUTER-READABLE MEDIUM
The invention relates to a method for determining the internal structure of a dental prosthesis base (24). The method comprises obtaining external shell data which describe an external shell (28) of the dental prosthesis base (24). Furthermore, a gum ridge line (30) is identified or gum ridge line data are obtained which describe the gum ridge line (30). Furthermore, a first reference line (32) is defined by parallel displacement of the gum ridge line (30) or the gum ridge line (30) is defined as the first reference line (32). In addition, a first reference point (36) is defined which is above or below the dental prosthesis base (24). A first separation surface (40) is defined as a surface which comprises all straight lines which extend through the first reference point (36) and through the first reference line (32). In addition, at least one sub-volume (V1, V3) of the dental prosthesis base (24) is derived as a volume delimited by the first separation surface (40) and the external shell (28). The invention also relates to a dental prosthesis base (24). Furthermore, the invention relates to a data-processing device, to a computer program, and to a computer-readable medium.
Glasses with high content of cerium and tin including the following components:
Glasses with high content of cerium and tin including the following components:
Component
Wt. - %
SiO2
38.0 to 68.0
Cerium, calculated as CeO2
4.0 to 23.0
Tin, calculated as SnO
3.0 to 18.0
Li2O
1.0 to 5.0
Alkali metal oxide MeI2O
5.8 to 15.9
Oxide of divalent elements MeIIO
3.2 to 10.5
Oxide of trivalent elements MeIII2O3
3.5 to 11.8
and which are particularly suitable for the preparation of dental restorations whose fluorescence properties largely correspond to those of natural teeth.
C03C 3/118 - Glass compositions containing silica with 40% to 90% silica by weight containing halogen or nitrogen containing fluorine containing boron containing aluminium
C03C 4/00 - Compositions for glass with special properties
C03C 8/06 - Frit compositions, i.e. in a powdered or comminuted form containing halogen
C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
4.
Fluorescent Glasses And Glass Ceramics With High Content Of Cerium And Tin
Glasses and glass ceramics with high content of cerium and tin, which include the following components:
Glasses and glass ceramics with high content of cerium and tin, which include the following components:
Component
Wt. %
SiO2
48.0 to 75.0
Li2O
8.0 to 20.5
Cerium, calculated as CeO2
4.0 to 20.0
Tin, calculated as SnO
3.1 to 15.7
and which are particularly suitable for the preparation of dental restorations with fluorescence properties largely corresponding to those of natural teeth.
C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
C03C 3/078 - Glass compositions containing silica with 40% to 90% silica by weight containing an oxide of a divalent metal, e.g. an oxide of zinc
C03C 4/00 - Compositions for glass with special properties
C03C 4/12 - Compositions for glass with special properties for luminescent glassCompositions for glass with special properties for fluorescent glass
A process control method for a 3D-printing process using a 3D printer. The 3D printer has a build platform, a light source, a receiving device for printing material and a control device by which an object can be produced layer-wise or continuously from the printing material. The method includes using a thermal imaging camera, the output signal of which is transmitted to the control device, connected to the 3D printer, The method includes the following steps of illuminating a layer or parts of said layer positionally selectively, detecting the temperature of the layer during the polymerisation using the thermal imaging camera, ending the building process of a layer by ending the illumination, the time of the end of the illumination being established by a predefined temperature Tmax or a predefined change in temperature dT/dt being reached.
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
A method for manufacturing a dental partial prosthesis from a dental blank, wherein the dental blank is a block, having an upper surface and a lower surface, which is composed of a flesh-coloured material and a tooth-coloured material. The flesh-coloured material and the tooth-coloured material are bonded together. The interface between the materials with elevations and depressions formed in or at the interface extends through an optionally curved plane, which plane is parallel to or oblique to at least a portion of the surfaces of the blank.
METHOD FOR DETERMINING THE INTERNAL STRUCTURE OF AN ARTIFICIAL TOOTH, METHOD FOR PRODUCING AN ARTIFICIAL TOOTH, ARTIFICIAL TOOTH, DATA-PROCESSING DEVICE, COMPUTER PROGRAM, AND COMPUTER-READABLE MEDIUM
The invention relates to a method for determining the internal structure (30) of an artificial tooth (24). The method comprises obtaining external shell data which describe an external shell (28) of the artificial tooth (24). First reference-geometry information is also defined or obtained. This information describes a first reference geometry (BI) which divides the outer shell (28) of the artificial tooth (24) virtually into a first shell portion (28a) and a second shell portion (28b). In addition, a first compressive-strain shell (32) is generated by virtual compressive strain on the first shell portion (28a) in one direction with respect to the first reference geometry (BI). At least one subvolume (34, 36) of the artificial tooth (24) is also derived, which subvolume is delimited by the first compressive-strain shell (32). The invention also relates to a method for producing an artificial tooth (24) having a predetermined outer shell (28). The invention also relates to an artificial tooth (24), to a data-processing device, to a computer program, and to a computer-readable medium.
The invention relates to a method for producing a dental restoration (12) from at least one material of a first material type. In the process, one region of the dental restoration (12) made of the material of the first material type comprises at least two portions of different colours and at least two portions of different colour brightness. The method comprises providing a first starting material (M1) having a first colour, a first colour brightness, and a first opacity. The method also comprises providing a second starting material (M2) having a second colour, a second colour brightness, and a second opacity. The region of the dental restoration (12) is then constructed from the material of the first material type by three-dimensionally arranging a plurality of volume segments, wherein each volume segment is formed exclusively from one or more selected from the first starting material (M1) and the second starting material (M2). The invention also relates to a device (10) for producing a dental restoration (12). The invention also relates to a use.
An oral sensor system (100) having a housing (101) with an electrical circuit (103) for evaluating measurement signals. It further includes a replaceable contact device (105) for the electrical circuit (103), which is coupled to the housing (101) in a liquid-tight manner.
Acid-stable glass fillers and self-adhesive dental composite cements with good transparency containing them. X-ray opaque glass filler with the following composition (wt. %): SiO2: 54.0-64.0; Al2O3: 10.0-25.0; B2O3: 0.0-10.0; La2O3: 0.1-10.0; WO3: 5.0-14.0; ZrO2: 0.1-7.0; MgO: 1.0-7.9; CaO: 0.1-6.0; ZnO: 0-6.0; SrO: 0-6.0, and radically polymerizable composition comprising, in addition to the radiopaque glass filler, at least one radically polymerizable monomer without an acid group, at least one radically polymerizable monomer containing an acid group, and at least one initiator for the radical polymerization. The glass filler is characterized by a high acid stability.
A receptacle (100) for a dental blank (103), having a recess (105) for inserting the dental blank (103); and a projecting clamping lug (107) for clamping the blank (103), which protrudes into the recess (105).
Process and slip for the production of ceramic shaped parts made of zirconium oxide ceramic by a 3D inkjet printing process. The slip contains zirconium oxide which is suspended in a liquid medium, wherein the slip has a zirconium oxide content of from 68 to 88 wt.-% and contains not more than 5 wt.-% organic components. The process for the production of ceramic components comprises the layered shaping and subsequent sintering of the desired component from the slip.
A heat treatment furnace (100) for a dental object (101), including an electronic camera (103) for generating an image data set (107) of the dental object (101) within a firing chamber (123) and an evaluation device (105) for determining a height and/or geometric dimension of the dental object (101) on the basis of the image data set (107).
Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
The present invention relates to a device (100) worn on the body and intended for a dental sensor, comprising a holding element (103) for holding the dental sensor in or at the mouth of a person (107); and a support element (105) for supporting the holding element (103) on the body of the person (107).
A radically polymerizable composition including at least one urethane group-containing (meth) acrylate monomer, at least one fracture toughness modifier and at least one transfer reagent of the general formula I
A radically polymerizable composition including at least one urethane group-containing (meth) acrylate monomer, at least one fracture toughness modifier and at least one transfer reagent of the general formula I
A radically polymerizable composition including at least one urethane group-containing (meth) acrylate monomer, at least one fracture toughness modifier and at least one transfer reagent of the general formula I
The composition is particularly suitable as dental materials, for example for the production of dental moldings by generative processes, and is characterised by a high fracture toughness.
The present invention relates to a cover device (100) for covering the lips and corners of the mouth of a patient during a treatment. The cover device comprises: an elastic tensible element for the lips (101); an elastic tensible element for the vestibule (103); and a piece of film (105) interconnecting the tensible elements and having a polyolefin surface (107).
An exposure device (100) for illuminating a dental object (101), having a chamber (103) for receiving the dental object (101); and a radiation source (105) for exposing the dental object (101) to a wavelength greater than 350 nm and to a power density greater than 10 W/cm2.
A printing method for producing a component, including the steps of calculating an energy input for a spatial region of the component on the basis of the optical parameters of a light-curable material; and curing the region of the component by light which generates the calculated energy input into the material.
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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
The present invention relates to a blank for dental prostheses which has a first layer based on zirconium oxide ceramic and a second layer based on zirconium oxide ceramic, the first layer and the second layer differing in color and forming a boundary surface, wherein the boundary surface is formed in the course of the dental arch in an undulating shape with alternating wave troughs and wave crests, and the vertex lines of the wave crests, viewed in plan view of the boundary surface, extend radially in the mesial-distal direction.
The invention relates to a process for the preparation of a zirconia granulate from a zirconia powder and to the use of the granulate for the preparation of dental blanks and dental restorations.
A method for printing a three-dimensional component (101), including the steps of heating (S101) a build platform to melt a material component to form a sliding film between the component and the build platform; and removing (S102) the component (101) from the build platform.
A method for setting a drop shape in a printing process, including the steps of controlling (S101) a piezo element of a printing nozzle by a first voltage profile; detecting (S102) an electric current value averaged over the first voltage profile or a sound amplitude averaged over the first voltage profile; controlling (S103) the piezo element of the printing nozzle by a second voltage profile; detecting (S104) an electric current value averaged over the second voltage profile or a sound amplitude averaged over the second voltage profile; and selecting (S105) the voltage profile with the lower detected current value or the lower detected sound amplitude.
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
A method for analyzing a print head (103), including the steps of driving (S101) a piezo element within the print head with a sequence of voltage profiles; and detecting (S102) a sound level, a current flow, a resistance, an impedance, and/or a temperature of the print head during the driving.
An oxide ceramic containing a pigment, wherein the pigment comprises Al, Cr, and one or more of Y, La, and lanthanides. Also provided is a dental shaped body containing the oxide ceramic with the pigment; a use of the oxide ceramic as a dental material; a use of the dental shaped body for preparing a dental restoration; a process for preparing a dental restoration; and a process for preparing the pigment.
A dental material comprising a pigment, wherein the pigment contains Al, Cr and one or more of Y, La and lanthanides. The dental material allows mimicking the red coloration of natural teeth and natural oral mucosa. Also provided is the use of the dental material and the pigment and starting compositions for making the pigment in the preparation of a dental restoration. Furthermore, a process for preparing a dental restoration and a process for preparing the pigment is provided.
A composition for reducing/eliminating aerosolization during dental/surgical irrigation procedures comprising at least one liquid or solid carrier and at least one polymer, wherein the at least one polymer comprises at least hydroxyalkyl cellulose polymer, at least one poly(ethylene oxide) polymer or a mixture thereof and wherein the at least one polymer is not soluble in the liquid carrier.
A production system (100) for producing partial prostheses (101), with a user interface (103) for digitally designing a prosthesis framework (105) with coupling elements (119) to the residual tooth hard tissue, a prosthesis base (107) and prosthesis teeth (109).
A method of producing a dental restoration (100), including the steps of calculating (S101) a pressure distribution (101) on the oral mucosa (105) through the dental restoration (100) based on a three-dimensional data set (103-DS) of the dental restoration (100) and a three-dimensional data set (103-MS) of the oral mucosa (105); and determining (S102) a spatial region (107) for an elastic production material (109) within the dental restoration (100) based on the calculated pressure distribution (101).
Quartz solid solution glass ceramics and precursors thereof are described, which are characterized by very good mechanical and optical properties and can be used in particular as restorative materials in dentistry.
C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
C03B 32/00 - Thermal after-treatment of glass products not provided for in groups , e.g. crystallisation, eliminating gas inclusions or other impurities
C03B 32/02 - Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
C03C 4/00 - Compositions for glass with special properties
31.
ACYLTHIOUREA OLIGOMERS SUITABLE AS REDOX INITIATOR COMPONENTS AND RADICALLY POLYMERIZABLE COMPOSITIONS COMPRISING THEM
Acylthiourea oligomers according to the formula
Acylthiourea oligomers according to the formula
Acylthiourea oligomers according to the formula
The acylthiourea oligomers, in combination with a hydroperoxide compound, are active as initiators for the radical polymerization. Radically polymerizable compositions comprising at least one acylthiourea, at least one hydroperoxide and at least one radically polymerizable monomer are particularly suitable as dental materials.
The present invention relates to a pre-sintered multi-layered dental mill blank comprising a top layer, a bottom layer, and at least one intermediate layer. The pre-sintered multi-layered dental mill blank or a part prepared thereof has one or more desirable properties when being fully sintered by a speed sintering process. The present invention also relates to a process for preparing a dental restoration using the pre-sintered multi-layered dental mill blank as well as to a dental restoration as such. The present invention further relates to a process for sintering a dental restoration precursor.
The present invention relates to a pre-sintered multi-layered dental mill blank comprising a top layer, a bottom layer, and at least one intermediate layer. The pre-sintered multi-layered dental mill blank or a part prepared thereof has one or more desirable properties when being fully sintered by a speed sintering process. The present invention also relates to a process for preparing a dental restoration using the pre-sintered multi-layered dental mill blank as well as to a dental restoration as such. The present invention further relates to a process for sintering a dental restoration precursor.
A method of producing a dental arch toothbrush (100), including the steps of detecting (S101) a dental arch shape (101) of a patient; and milling (S102) the dental arch shape (101) out of a disk (103) in which the bristles (105) of the dental arch toothbrush (100) are embedded.
Quartz solid solution glass ceramics and precursors thereof are described. which are characterized by very good mechanical and optical properties and can be used in particular as restorative materials in dentistry.
C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
A blank holder and a blank are provided, the blank holder having a receiving area for a substantially disc-shaped blank, the receiving area being curved. The receiving area forms a straight, circular or part-circular or arc-shaped form-fitting profile. The blank has a matching guide shell which can be inserted or turned into the form-fitting profile.
A method of determining the three-dimensional shape of a functional surface of a dental prosthesis, comprising the steps of detecting (S101) an intraoral space to generate a three-dimensional actual data set; and inputting (S102) the three-dimensional data set into a learned algorithm to generate a three-dimensional nominal data set for a functional surface of the dental prosthesis.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
A method of producing a dental restoration, including the steps of determining (S101) a first spatial region of the dental restoration that is subject to a higher load than a second spatial region of the dental restoration; and producing (S102) the dental restoration in the first spatial region with a different production material than in the second spatial region.
A radically polymerizable material for the preparation of dental prostheses, containing (a) at least one monofunctional radically polymerizable (meth)acrylate, (b) at least one polyfunctional radically polymerizable (meth)acrylate, (c) at least one ABA triblock copolymer, (d) at least one nanoparticulate or microfine filler having an average primary particle size of from 10 nm to 350 nm, and (e) at least one photoinitiator. The A block of the ABA triblock copolymer is an oligomeric polyester and the B block is an oligomeric polysiloxane.
A milling machine (10), having a milling spindle (12) and a workpiece holder (24) which is mounted so as to move with respect to the milling spindle (12) in at least 3 or 4 spatial directions, having a workpiece which is held in a clamped manner on the workpiece holder (24), having a sensor, relative to which the workpiece can be brought into contact and relative to which workpiece the sensor can be moved to sense the workpiece, wherein the sensor is designed as a sensing probe (18), having a deflection and detection of a deflection of its sensing element (30) in at least 1 spatial direction, or in 2 or 3 spatial directions.
A method of producing a dental object (100), including the steps of producing a pillared support structure (101) on the dental object (100); and producing a lattice structure (103) for reinforcing the support structure (101).
A radically polymerizable composition comprising at least one polyfunctional radically polymerizable monomer having no acid group, at least one acid group-containing radically polymerizable monomer and/or at least one acidic oligomer, at least one fluoroaluminosilicate glass filler and/or radiopaque glass filler, and at least one initiator for the radical polymerization, wherein the fluoroaluminosilicate glass filler and/or radiopaque glass filler is coated with a silica (hetero)polycondensate. The composition is characterized by high stability and is particularly suitable as a dental material.
A holding device (100) for a cylindrical blank (200), including a cylindrical recess (103) for inserting the blank (200); and a straight slot (105) intersecting the cylindrical recess (103) beyond the central point.
A method of producing a multicolor glass-ceramic blank (10) for dental purposes. A glass-ceramic blank (10) is produced from at least a first material powder (18) and a second material powder (20), wherein the first material powder (18) and the second material powder (20) are different-colored and wherein at least one of first material powder (18) and second material powder (20) has nanoparticles (14) and/or glass-ceramic particles (16). The first material powder (18) and the second material powder (20) are introduced into a mold (22) in order to form at least one powder mixture aggregate (26). Additionally, the powder mixture aggregate (26) is compressed by hot pressing in order to form the glass-ceramic blank (10). A multicolor glass-ceramic blank (10) is obtainable by such a method and the multicolor glass-ceramic blank (10) is used as dental material.
B28B 3/02 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein a ram exerts pressure on the material in a moulding spaceRam heads of special form
47.
Multiple Mold For Production Of At Least Two Glass-Ceramic Blanks For Dental Purposes, Use Of A Multiple Mold, Compression Apparatus And Continuous System
A multiple mold (42) for production of at least two glass-ceramic blanks. The glass-ceramic blanks are for dental purposes and are produced from at least two powder blanks by hot pressing. The multiple mold (42) includes a frame (48) that defines at least sections of a receiving volume (50) for the at least two powder blanks. Additionally provided is a separating element (52) which is disposed within the receiving volume (50) and divides the receiving volume (50) into at least two subvolumes, each of which is designed to accommodate one of the at least two powder blanks. Also described are the use of the multiple mold (42) for production of a glass-ceramic blank for dental purposes, a compression apparatus and a continuous system for production of glass-ceramic blanks for dental purposes.
A dental object (100), having an adhering region (103) for attaching the dental object (100) to a tooth, teeth (105) or the gums, including an array (101) of suction cups (107-1, . . . , 107-n).
A61K 6/802 - Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
C03B 19/02 - Other methods of shaping glass by casting
C03B 32/02 - Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
C03C 3/097 - Glass compositions containing silica with 40% to 90% silica by weight containing phosphorus, niobium or tantalum
C03C 4/00 - Compositions for glass with special properties
C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
C03C 17/02 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with glass
50.
RADICALLY POLYMERIZABLE COMPOSITION COMPRISING A REDOX INITIATOR SYSTEM BASED ON DIHYDROPYRIDINES
Centre National de la Recherche Scientifique (France)
Universite de Haute Alsace (France)
Inventor
Fässler, Pascal
Lamparth, Iris
Catel, Yohann
Schnur, Thomas
Lalevée, Jacques
Thetiot, Estelle
Abstract
Radically polymerizable dental material, which includes a catalyst paste and a base paste, wherein the catalyst pastes includes an oxidizing agent, preferably a peroxide or hydroperoxide, a radically polymerizable monomer and/or oligomer with acid group and a polyfunctional radically polymerizable monomer, and the base paste comprises a polyfunctional radically polymerizable monomer without an acid group and a dihydropyridine derivative of Formula (1)
Radically polymerizable dental material, which includes a catalyst paste and a base paste, wherein the catalyst pastes includes an oxidizing agent, preferably a peroxide or hydroperoxide, a radically polymerizable monomer and/or oligomer with acid group and a polyfunctional radically polymerizable monomer, and the base paste comprises a polyfunctional radically polymerizable monomer without an acid group and a dihydropyridine derivative of Formula (1)
Radically polymerizable dental material, which includes a catalyst paste and a base paste, wherein the catalyst pastes includes an oxidizing agent, preferably a peroxide or hydroperoxide, a radically polymerizable monomer and/or oligomer with acid group and a polyfunctional radically polymerizable monomer, and the base paste comprises a polyfunctional radically polymerizable monomer without an acid group and a dihydropyridine derivative of Formula (1)
The material has good mechanical properties and does not exhibit a bitter taste.
A vacuum film (100) for scanning an oral cavity (101), having a perforation layer (103); a fiber layer (105) arranged on the perforation layer (103); and a texture layer (107) arranged on the fiber layer (105).
A method of producing a dental restoration, including the steps of producing (S101) the dental restoration in an initial geometry having an excess volume compared to the final geometry to be produced; infiltrating (S102) the initial geometry with an investment material; and removing (S103) the excess volume with the investment material to produce the final geometry.
A dental material having at least one copolymer obtained by (I) copolymerizing one or more monomers MG having a polymerizable (meth)acrylate group, one or more OH group-containing (meth)acrylates MF, one or more strongly acidic adhesive monomers MH and optionally of one or more polymerizable carboxylic acid monomers MCS, (II) reacting the resulting copolymer A0 in a polymer-analogous reaction with a functionalized, radically polymerizable monomer MP, which reacts with the OH groups of the monomer MF in the polymer chain of A0 to form a copolymer AP having pendant polymerizable groups, and (III) neutralizing the copolymer Ap with a base. The material is particularly suitable as a dental adhesive.
A container (100) for producing a self-curing or dual-curing dental synthetic material composition (200), which container comprises a deformable wall (101), having a first synthetic material component (103-1); and a second synthetic material component (103-2) for curing the synthetic material composition (200) or starting a curing reaction.
B65D 81/32 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
Provided are dental alloys comprising platinum, cobalt, and gold and optionally further comprising one or more of ruthenium, gallium, manganese, chromium and silicon, wherein the gold makes up from 0.5 to 5.0 wt % of the total alloy. The alloys have desirable castability and ease of manufacture. The alloys can be used in manufacture of dental articles comprising the alloy and porcelain materials, and used for various dental restorations.
A semi-finished product as a pre-product for a dental prosthesis having a prosthesis base, wherein the prosthesis base comprises at least one dental recess for receiving a set of teeth, and wherein the set of teeth is glued into the at least one dental recess by an adhesive. In the dental recess and/or in or at the set of teeth an adhesive channel is configured which extends along the at least one dental recess or the dental arch in its main direction of extension. It starts at an adhesive filling opening whose configuration is adapted to a filling element.
A method for spatially resolved color determination, comprising the steps of projecting (S101) a first structured-light pattern having a first wavelength of light onto a dental object;
A method for spatially resolved color determination, comprising the steps of projecting (S101) a first structured-light pattern having a first wavelength of light onto a dental object;
detecting (S102) a first spatially resolved optical parameter set based on the reflected or remitted first structured-light pattern; projecting (S103) a second structured-light pattern having a second wavelength of light onto the dental object; detecting (S104) a second spatially resolved optical parameter set based on the reflected or remitted second structured-light pattern; and calculating (S105) a third spatially resolved optical parameter set at a third wavelength of light based on the first and second spatially resolved optical parameter sets.
A method for assigning an order identification to a manufactured dental restoration, including the steps of scanning (S101) the manufactured restoration to generate an actual data set representing the actual shape of the manufactured restoration; retrieving (S102) a data set representing a nominal shape of a digital restoration and to which an order identification is assigned; comparing (S103) the actual shape with the nominal shape; and detecting (S104) the order identification of the data set when the actual shape corresponds to the nominal shape.
A furnace (10) having a pressing punch (36), a pressure, distance and/or speed sensor and a control device for controlling a pressing process based on the output signal of the sensor. The sensor detects at least a pressure, position and/or motion parameter of the pressing punch (36). The pressing punch (36) acts on the bulk material of glass particles (32)—possibly via an interposed ram (28)—, said glass particles being guided and crystallizable in a press channel (30). The trigger criterion for the process control is a change of at least a motion parameter of the pressing punch (36) upon softening of the bulk material of glass particles (32) which change is detected by the sensor.
A method for arranging support structures for an additive manufacturing process on a dental restoration, comprising the steps of detecting (S101) a flash line in a digital model of the dental restoration; and adding (S102) support structures to the digital model for supporting the dental restoration in the additive manufacturing process along the flash line.
A method for removing deposits in a print head of a 3D printer, including the steps of supplying (S101) a liquid having a granular solid to the print head; and setting into vibration (S102) the liquid in the print head.
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
B08B 3/10 - Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
B08B 3/12 - Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
63.
CALIBRATION UNIT FOR A MACROSCOPIC MEDICAL IMAGING DEVICE, MACROSCOPIC MEDICAL IMAGING CALIBRATION SYSTEM AND USE OF A CALIBRATION UNIT
A calibration unit (28) for the calibration of a macroscopic medical imaging device. The calibration unit (28) is especially suitable for the calibration of a macroscopic dental imaging device. The calibration unit (28) comprises a main body (40) having a front surface (42) being configured for being optically oriented towards the imaging device. Moreover, a fluorescent material (54) of a first type is arranged in a first sector (48) of the main body (40). Furthermore, a fluorescent material (58) of a second type is arranged in a second sector (56) of the main body (40). Alternatively or additionally to the fluorescent material (58) of the second type, an opaque, non-fluorescent material (68) is arranged in a third sector (66) of the main body (40). Additionally, a macroscopic medical imaging calibration system, especially a macroscopic dental imaging calibration system is presented. Moreover, a use of the calibration unit (28) as described above for the calibration of a macroscopic medical imaging device, especially for the calibration of a macroscopic dental imaging device, is explained.
A method for preventing deposits of a printing liquid at a nozzle plate (101) of a print head within a 3D printer (100), including the step of increasing a saturation level of a carrier liquid (103) of the printing liquid in the air in front of the nozzle plate (101).
A manufacturing device (100) for a dental restoration (200), including a tool (101) for machining a blank (201); a detector (103) for detecting a spindle current of a turning spindle (117); and a calculator (105) for calculating wear of the tool (101) based on the spindle current.
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
Multilayer oxide ceramic bodies and in particular presintered multilayer oxide ceramic blanks and oxide ceramic green bodies, which comprise at least two different layers and are suitable for dental applications, wherein at least one layer contains La2O3 and the at least two different layers differ in their content of La2O3. These bodies can be thermally densified by further sintering without distortion and are therefore particularly suitable for the production of dental restorations. The invention also relates to a process for the production of such multilayer oxide ceramic bodies as well as a process for the production of dental restorations using the multilayer oxide ceramic bodies.
C04B 35/50 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare earth compounds
C04B 35/04 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
A manufacturing device (100) for manufacturing a dental object (101), including an electronic camera (103) for capturing an image data set (107) of the dental object (101) to be processed; and a controller (105) for determining the control data for manufacturing the dental object (101) based on the image data set (107).
A zirconia blank produced by introducing a zirconia suspension into a porous mould and demoulding the blank formed as well as the use of the optionally presintered blank formed for the preparation of a dental restoration using a very short dense-sintering process.
B28B 1/26 - Producing shaped articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mouldMoulds therefor
A circuit housing (100) for a wearable intraoral application, including an inner layer (105-1) of a first material (101-1) for waterproof enclosure of an electronic circuit (103); and an outer layer (105-2) of a second material (101-2) for spatially fitting the circuit housing to a set of teeth (111), at least partially covering the first material (101-1).
A saliva suction device is provided comprising a plastic injection-molded part which configures a coupling for connection to a suction hose, possibly via an adapter, and is plugged on the suction hose or connected to the suction hose in another manner and particularly configures a lingual shield. A first suction channel extends through the molded part. A massive, i.e. non-porous, soft body is plugged on or at the plastic molded part and connected to the molded part in a form-fitting manner, through which soft body a second suction channel extends which is vertically offset relative to the first suction channel. Particularly on the side of the second suction channel, which is opposite the first suction channel, a suction area with at least one suction opening for saliva is configured in the soft body.
A dental handheld device (100) for curing a polymer using light, having a laser diode as a first light source (101-1) for outputting light in a first wavelength range; and a second light source (101-2) for outputting light in a second wavelength range.
A machining method including the steps of providing (S101) a data set (101) for the milling process in which at least one process parameter (103) for machining a workpiece (105) is specified; simulating (S102) a machining force on the workpiece (105) based on the data set; and adjusting (S103) the process parameter (103) for machining until a predetermined maximum value for the machining force is reached or a predetermined minimum value is maintained.
B23Q 15/06 - Control or regulation of feed movement according to measuring results produced by two or more gauging methods using different measuring principles, e.g. by both optical and mechanical gauging
B23Q 15/12 - Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
74.
Compositions for the production of fracture-tough dental parts by means of stereolithography
A polymerizable composition, which includes (a) at least one radically polymerizable oligomer, (b) at least one radically polymerizable monomer and (c) at least one initiator for the radical polymerization, characterized in that the radically polymerizable oligomer (a) is selected from the group consisting of aliphatic urethane (meth)acrylate oligomers, epoxy (meth)acrylate oligomers and polyether urethane (meth)acrylate oligomers, and the radically polymerizable monomer (b) is polyfunctional.
C08F 2/46 - Polymerisation initiated by wave energy or particle radiation
C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
C08G 61/04 - Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms
C08L 33/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
C08L 33/08 - Homopolymers or copolymers of acrylic acid esters
C08K 3/013 - Fillers, pigments or reinforcing additives
Process and slip for the production of ceramic shaped parts made of zirconium oxide ceramic by a 3D inkjet printing process. The slip contains zirconium oxide which is suspended in a liquid medium, wherein the slip has a zirconium oxide content of from 68 to 88 wt.-% and contains not more than 5 wt.-% organic components. The process for the production of ceramic components comprises the layered shaping and subsequent sintering of the desired component from the slip.
Dental polishing and cleaning paste for professional tooth cleaning, which contains 1 to 30 wt.-% water, 25 to 70 wt.-% at least one humectant, 25 to 60 wt.-% at least one abrasive and 0.05 to 2 wt.-% at least one surfactant, in each case relative to the total mass of the polishing and cleaning paste.
A61K 8/96 - Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof, of undetermined constitution
A61Q 11/00 - Preparations for care of the teeth, of the oral cavity or of dentures, e.g. dentifrices or toothpastesMouth rinses
77.
FILM TENSIONING ELEMENT, METHOD FOR THE APPLICATION OF A FILM TENSIONING ELEMENT IN COMBINATION WITH THE SCAN HEAD OF A SCANNER, AS WELL AS METHOD FOR PRODUCING A FILM TENSIONING ELEMENT
A film tensioning element is provided for dental applications with a film extending between tensioning rings. The film has a modulus of elasticity of less than 2 KN/mm2. The film is made of a tough plastic with a modulus of elasticity of more than 1 KN/mm2, in particular of PP, or optionally of PA. The film tensioning element is manufactured together with the tensioning rings.
A61C 5/90 - Oral protectors for use during treatment, e.g. lip or mouth protectors
C08L 33/24 - Homopolymers or copolymers of amides or imides
C08L 67/03 - Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the hydroxy and the carboxyl groups directly linked to aromatic rings
A recognition method for a dental object, including the steps of providing (S101) a digital dental object in a coordinate system describing a shape of the dental object to be manufactured; and automatically assigning (S102) the digital dental object to a predetermined class based on the shape by a self-learning algorithm.
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G16H 30/40 - ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
A manufacturing method for a dental object, including the steps of generating (S101) a digital dental object in a coordinate system describing a shape of the dental object to be manufactured; rotating (S102) the spatial orientation of the digital dental object in the coordinate system based on a digital reference object in the coordinate system; and manufacturing (S103) the dental object based on the digital dental object with the rotated spatial orientation.
A manufacturing machine (100) for manufacturing a dental object (101), having a suspension damper (103) for slowing down the falling dental object (101).
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
81.
FILM-TENSIONING ELEMENT, METHOD FOR USING A FILM-TENSIONING ELEMENT IN COMBINATION WITH THE SCANNING HEAD OF A SCANNER, AND METHOD FOR MANUFACTURING A FILM-TENSIONING ELEMENT
The invention relates to a film-tensioning element for dental applications, said film-tensioning element comprising a film that extends between tensioning rings. The film has a modulus of elasticity of less than 2 KN/mm2. The film is made of a tough plastic having a modulus of elasticity of more than 1 KN/mm2, in particular PP, or optionally PA. The film-tensioning element is manufactured together with the tensioning rings.
A one-piece or multi-piece prosthesis blank for manufacturing a dental prosthesis. The blank is constructed from a gum-colored material and a tooth-colored material. It is characterized by being connected to each other at connecting surfaces, having an interface between the gum-colored and tooth-colored materials. This interface, when viewed along the connecting surfaces has an undulating shape and viewed in the vestibular direction has a radial shape. In order to finish the dental prosthesis, a CAD/CAM device determines the exact course of a gingival line, based on patient-specific data, and produces the prosthesis.
G16H 20/40 - ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
A manufacturing method for a dental object (100) including the steps of generating a dendritic base structure (101) on a build platform (103) and building the dental object (100) on the dendritic base structure (103) by a three-dimensional printing method.
A holding device (100) for a round dental blank (200). The holding device has an open ring element (101) for laterally gripping the dental blank (200) and a closing element (103) for closing the ring element (101) at various positions.
The present invention relates to a holding device (100) for a round dental blank (200), comprising an open ring element (101) for laterally gripping the dental blank (200); and a closing element (103) for closing the ring element (101) at various positions.
Radically polymerizable material, which contains (a) 0.01 to 5 wt.-% of at least one transfer reagent, (b) 5 to 60 wt.-% of at least one multifunctional (meth)acrylate or a mixture of mono-and multifunctional (meth)acrylates, (c) 0.01 to 3.0 wt.-% of a mixture of at least one monomolecular and at least one bimolecular photoinitiator, (d) 30 to 90 wt.-% of at least one filler, and (e) optionally additive(s), wherein the material contains as transfer reagent (a) at least one allyl sulfone of Formula I and/or a vinyl sulfone ester of Formula II.
C08F 2/48 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
C08F 228/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur by a bond to sulfur
C08F 2/44 - Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
A material for use as support material for energy-pulse-induced transfer printing, which contains (a) at least one energy transformation component, (b) at least one volume expansion component and (c) at least one binder and which has a viscosity at 25° C. of from 0.2 Pas to 1000 Pas and a surface tension at 25° C. of from 20 to 150 mN/m. The invention furthermore relates to a process for producing three-dimensional objects using the support material.
B28B 1/00 - Producing shaped articles from the material
B28B 11/24 - Apparatus or processes for treating or working the shaped articles for curing, setting or hardening
B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
A material for use as support material for energy-pulse-induced transfer printing, which contains (a) at least one energy transformation component, (b) at least one volume expansion component and (c) at least one binder and which has a viscosity at 25° C. of from 0.2 Pas to 1000 Pas and a surface tension at 25° C. of from 20 to 150 mN/m. The invention furthermore relates to a process for producing three-dimensional objects using the support material.
B28B 1/00 - Producing shaped articles from the material
B28B 11/24 - Apparatus or processes for treating or working the shaped articles for curing, setting or hardening
B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
The invention relates to a method for the digital acquisition of an intraoral structure by scanning the structure using an intraoral color scanner which, according to the invention, is designed to correct color values of the scanning points using a color reference template of a reference color space.
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
The present invention relates to a method for fabricating a dental restoration, comprising the steps of rendering (S101) a first digital tooth model with a first material combination for generating a first actual data set representing the optical properties of the first digital tooth model; determining (S102) a first deviation between a target data set and the first actual data set; rendering (S103) a second digital tooth model based on a second combination of materials to generate a second actual data set representing the optical properties of the second digital tooth model; determining (S104) a second deviation between the target data set and the second actual data set; and fabricating (S105) the dental restoration based on the first digital tooth model when the first deviation is less than the second deviation and fabricating the dental restoration based on the second digital tooth model when the second deviation is less than the first deviation.
A dental cartridge, in particular for insertion into an injector, is configured with a cylinder body with a gripping shoulder at a first end face and with a cylinder chamber into which dental material can be filled, with a dispensing nozzle which is arranged on a second end face of the cylinder body opposite the gripping shoulder, wherein the cylinder body and the dispensing nozzle are connected via a joint. The joint is formed with a joint head in the form of a ball as part of the dispensing nozzle and with a complementary joint socket as part of the cylinder body at the second end face. The dispensing nozzle is swiveled in relation to the cylinder body in a swivel range about three axes x-y-z.
A dental hand-held device (100), including a curing device (101) for curing a dental restauration material (103) with light in a first wavelength range; and a fluorescence excitation device (105) for exciting fluorescence of dental substance (107) with light in a second wavelength range.
A61C 13/15 - Curing devices for plastics prostheses for curing by the action of light
A61B 1/04 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor combined with photographic or television appliances
The invention relates to a material for use as construction material for energy-pulse-induced transfer printing, which contains (a) at least one polymerizable binder, (b) at least one volume expansion component, (c) at least one initiator for the polymerization and (d) preferably at least one energy transformation component. The invention furthermore relates to a process for producing three-dimensional objects using the material.
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
B33Y 70/00 - Materials specially adapted for additive manufacturing
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
C09D 11/107 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
A61K 6/30 - Compositions for temporarily or permanently fixing teeth or palates, e.g. primers for dental adhesives
A61K 6/887 - Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
A radically polymerizable composition having at least one acidic radically polymerizable monomer, at least one fluoroaluminosilicate glass filler and/or radiopaque glass filler, and at least one masking agent in solid form.
A radical polymerizable composition having at least one acidic radical polymerizable monomer, at least one fluoroaluminosilicate glass filler and/or radiopaque glass filler, and at least one water-soluble sulfate and/or phosphate.
Lithium silicate glass ceramics and precursors thereof are described, which comprise copper and are characterized by very good mechanical and optical properties and can be used in particular as restorative materials in dentistry.
Lithium silicate glass ceramics and precursors thereof are described, which contain tin and are characterized by very good mechanical and optical properties and can be used in particular as restorative materials in dentistry.
A radically polymerizable dental material having at least one radically polymerizable monomer without acid groups, at least one radically polymerizable monomer containing an acid group, at least one fluoroaluminosilicate glass filler and/or radiopaque glass filler, and at least one initiator for the radical polymerization, wherein the filler is an acid-treated fluoroaluminosilicate glass filler and/or radiopaque glass filler.
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
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
B29C 64/282 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED] of the same type, e.g. using different energy levels
B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
100.
Manufacturing device for the manufacture of a blank for a dental restoration part, method for manufacturing a blank for a dental restoration part, as well as blank
A manufacturing device is provided for the production of a blank, in particular one which is to be polymerized, of a dental restoration part. A mold for receiving blank material includes in particular a pot-shaped or cup-shaped base and a punch or—possibly hood-shaped—cover. An insert body with a structure on its underside and a heating device for the mold and a control device for the manufacturing device are provided. A height measuring device is connected to the control device, which measures the height of a reference surface connected to the punch or cover, relative to the base. The control device calculates the height position of the structure based on this measured height.
