Abstract: A method for producing a dental restoration (D) by CAD casting is described, said method comprising the steps of a) recording three-dimensional, digital data of the dentition or of a part of the dentition of a patient, b) creating a virtual dental restoration (VD) using the recorded three-dimensional, digital data, wherein the virtual dental restoration (VD) is expanded in relation to the dental restoration (D) to be produced, c) preparing a model (M) using the created virtual dental restoration, such that the model (M) is expanded in relation to the dental restoration (D) to be produced, d) embedding the model (M) in an embedding compound (EM), e) hardening the embedding compound (EM) and removing the model (M), such that a casting mold is obtained, f) filling the casting mold, preferably by pouring, with a casting material (GM) and cooling the casting material (GM), such that the dental restoration (D) is obtained, and optionally the further steps of g) working the dental restoration (D), and h) veneering t

Abstract: The present invention relates to a method of producing a (shaped) ceramic or glass-ceramic article, involving the steps of: (a) providing a powder or a powder mixture comprising ceramic or glass-ceramic material, (b) depositing a layer of said powder or powder mixture on a surface, (d) heating at least one region of said layer by means of an energy beam or a plurality of energy beams to a maximum temperature such that at least a part of said ceramic or glass-ceramic material in said at least one region is melted and (e) cooling said at least one region of said layer so that at least part of the material melted in step (d) is solidified, such that the layer is joined with said surface in said at least one region. The invention also relates to ceramic or glass-ceramic articles and their use.

Abstract: A set of elements is described for use in the production of a dental prosthesis (20), in particular of a crown, a bridge, an inlay or an onlay, comprising: a framework (3) and one or more model parts (5) for defining parts of the outer contour of a veneer (15) for the framework (3), wherein the model part or parts (5) can be mounted on the framework (3) in such a way that, at one and the same time, (i) a gap (7) remains between the model part or parts (5) and the framework (3) and (ii) the model part or parts (5) define parts [lacuna] the outer contour. Corresponding methods and systems are also described.

Abstract: A method for producing a dental restoration (D) by CAD casting is described, said method comprising the steps of a) recording three-dimensional, digital data of the dentition or of a part of the dentition of a patient, b) creating a virtual dental restoration (VD) using the recorded three-dimensional, digital data, wherein the virtual dental restoration (VD) is expanded in relation to the dental restoration (D) to be produced, c) preparing a model (M) using the created virtual dental restoration, such that the model (M) is expanded in relation to the dental restoration (D) to be produced, d) embedding the model (M) in an embedding compound (EM), e) hardening the embedding compound (EM) and removing the model (M), such that a casting mold is obtained, f) filling the casting mold, preferably by pouring, with a casting material (GM) and cooling the casting material (GM), such that the dental restoration (D) is obtained, and optionally the further steps of c) working the dental restoration (D), and h) veneering t

Abstract: The present invention relates to a method of producing a (shaped) ceramic or glass-ceramic article, involving the steps of: (a) providing a powder or a powder mixture comprising ceramic or glass-ceramic material, (b) depositing a layer of said powder or powder mixture on a surface, (d) heating at least one region of said layer by means of an energy beam or a plurality of energy beams to a maximum temperature such that at least a part of said ceramic or glass-ceramic material in said at least one region is melted and (e) cooling said at least one region of said layer so that at least part of the material melted in step (d) is solidified, such that the layer is joined with said surface in said at least one region. The invention also relates to ceramic or glass-ceramic articles and their use.

Abstract: A set of elements is described for use in the production of a dental prosthesis (20), in particular of a crown, a bridge, an inlay or an onlay, comprising: a framework (3) and one or more model parts (5) for defining parts of the outer contour of a veneer (15) for the framework (3), wherein the model part or parts (5) can be mounted on the framework (3) in such a way that, at one and the same time, (i) a gap (7) remains between the model part or parts (5) and the framework (3) and (ii) the model part or parts (5) define parts [lacuna] the outer contour. Corresponding methods and systems are also described.

Abstract: The invention relates, inter alia, to a method for the production of a ceramic shaped body (22), comprising the following steps: production or provision of a green body (10) having a structured surface region (12), irradiation of at least the structured surface region (12), so that the green body (10) is consolidated in the region of a volume zone (16) including the structured surface region (12), but is not consolidated or is consolidated to only a lesser degree in volume zones further from the surface, separation of the consolidated volume zone (16) including the structured surface region (12) from parts of the green body (10) which have not been consolidated or have been consolidated to only a lesser degree, and optionally scouring of the consolidated volume zone (16) obtained in this way.

Abstract: One object on which the present invention is based is to specify an apparatus (101, 201, 301, 401, 501) for production of a mold (117), in particular of a dental mold (117), by means of electrophoretic deposition of particles (115) from a suspension (113, 213), in which case a predetermined spatial shape can be produced deliberately in order in this way to produce the mold (117) as close as possible to its final dimensions and final contour. A further aim is to produce the mold (117) at low cost, with efficient use of resources, quickly and in as simple a manner as possible, with good reproducibility of the method being desirable in order to achieve a low scrap rate.

Abstract: The invention relates to a method (100, 200, 300) for producing a dental prosthesis (17) comprising a framework (3) and a veneer (15), in particular for creating a crown, a bridge, an inlay or an onlay. The invention also relates to a system (40, 50) for creating a dental prosthesis (17) comprising a framework (3) and a veneer (15) as well as a corresponding computer program.

Abstract: A method is described for producing a metallic component, comprising the following steps: provision of a negative model for the component, which (i) is electrically: conductive or is rendered electrically conductive at least on the surface thereof or (ii) is porous and comprises an electrode inside, provision of a slip which comprises electrophoretically depositable metallic and optionally additionally ceramic particles, electrophoretic deposition of a layer of the particles from the slip onto the surface of the model, sintering or partial sintering of the deposited layer of particles.

Abstract: In a method of making a ceramic shaped body which permits an adjustable volume change (shrinkage, zero shrinkage or increase in volume) compared to its green product, a metal oxide powder and a metal powder are stirred in a colloidal sol into slip and that slip is then consolidated in a mold into a green product by freeze-gelling and finally the green product is sintered in an active atmosphere which enables the metal powder to oxidize, to form the shaped body. The disclosure is also concerned with a slip for a shaped body of this kind and advantageous uses for the shaped body.

Abstract: The invention relates to a method for producing a ceramic crucible. The following steps are proposed: providing a solidifiable slip, providing a casting mould (10) for the ceramic crucible, pouring the slip into the casting mould, solidifying the slip in the casting mould by (a) freezing and/or (b) changing its pH value, such that a preform is obtained, and heat-treating the preform, such that a ceramic crucible is obtained. The invention additionally relates to a ceramic crucible producible using such a method and a kit for producing such a ceramic crucible, having: (a) a casting mould, preferably a metal mould, for a ceramic crucible, (b) a sol, preferably an aqueous SiO2 sol, comprising a ceramic nanoparticle fraction, (c) ceramic particles comprising a microceramic fraction, (d) optionally a metal powder consisting essentially of metals and/or alloys and/or intermetallic compounds, (e) optionally one or more further additives and optionally organic or inorganic binders.

Abstract: The invention relates to a process for the production of a dental model (24). The invention furthermore relates to a dental model which can be produced in this way, optionally with a ceramic layer deposited thereon, a process for the production of a dental moulding, the use of a 3D printer and the use of a kit. According to the invention, the following steps are proposed for the process: (a) provision of one or more fluid, solidifiable materials and one or more electrically conductive substances and (b) production of the dental model (24) by rapid prototyping using the fluid, solidifiable material or materials and the one or more electrically conductive substances, so that the dental model produced is electrically conductive in one or more areas (26, 28, 30) of its surface.

Abstract: The invention relates to a process for the production of a rapid prototyping model, in particular a rapid prototyping model for electrolytic or electrophoretic deposition. The steps (a) provision of a mixture of one or more fluid, solidifiable materials and one or more electrically conductive substances and subsequently (b) production of the rapid prototyping model by rapid prototyping using the mixture, such that the rapid prototyping model produced is electrically conductive in one or more areas of its surface due to the presence of the electrically conductive substance or substances and has a pore structure in its inside, are proposed.

Abstract: Methods are described for the production of a muffle for precision or model casting having the following steps: preparation of a pattern preparation of an investment, comprising a mixture of: a) a dispersing agent, b) a ceramic powder containing (i) a fraction having a diameter of less than 500 nm (nanoceramic powder fraction) in a proportion of 2-74% (V/V), based on the volume of the total mixture, and (ii) a fraction having a diameter of more than 500 nm (microceramic powder fraction) in a proportion of 2-74% (V/V), based on the volume of the total mixture c) optionally a metal powder consisting of metals and/or alloys and/or intermetallic compounds, d) optionally one or more further additives and e) optionally inorganic or organic binder investing or covering the pattern with the investment solidification of the investment investing or covering the pattern by a) freezing, b) gelling, in particular on the basis of a change in pH value and/or c) dehydrating, during and/or after the solidification, drying the