Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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).

Abstract: 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.

Abstract: The present invention relates to a method for comparing three-dimensional dental structures, comprising the steps of acquiring (S101) a target data set representing the shape and optical properties of a natural tooth; rendering (S102) a digital tooth model (200) to generate an actual data set representing the shape and optical properties of the digital tooth model; determining (S104) a first comparison value from the actual data set; determining (S105) a second comparison value from the target data set; and determining (S106) a deviation based on the first and second comparison values.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The present invention relates to a building platform (100) for building up a workpiece (200) in layers or continuously by stereolithography, comprising: a rear illumination device (101-1) for illuminating a layer (103-n) from a rear side; a photosensor (105) for detecting a light intensity of a light from a front illumination device (101-2) through the layer (103-n) and/or a material and/or a deflecting mirror; and a control device (107) for activating the rear illumination device (101-1) when the detected light intensity of the front illumination device (101-2) is above a predetermined threshold.

Abstract: A method for producing a mouthpiece toothbrush is provided, in which at least one dental arch of the patient for whom the toothbrush is intended is scanned to generate scan data, or an impression of the dental arch is made. Based on the scan data or the then digitised impression, the dental arch space occupied by the dental arch is recorded. A bristle space is constructed around the at least one dental arch, and a toothbrush moulded piece is calculated, the surface of which facing the dental arch is determined by the dental arch space plus the bristle space. The surface is covered with a bristle carpet.

Abstract: The present invention is directed to a method and a device for building a shaped body by stereolithographic solidification of building material by photopolymerization.

Abstract: The present invention is directed to a method and a device for building a shaped body by stereolithographic solidification of building material by photopolymerization.

Abstract: The invention is directed to a method for additively manufacturing of a three-dimensional product using top-down stereolithography, wherein flowable, photopolymerizable material in a vat (50) is solidified in a locally selective manner by exposure from above, characterized in that a pressurized gas jet is directed to the surface of the photopolymerizable material, which pressurized gas jet is ejected by a pressurized gas nozzle of a blower (2) which is movable above the liquid level in the vat, wherein the pressurized gas jet is extensive in a direction transverse to the moving direction of the blower, and that by moving the blower with its pressurized gas nozzle across areas of the material surface to be solidify and acts on the surface in this manner, to smooth and level the surface. With such a method multi-component products may be built in which products a further component has to be built attached to an already existing component which (partially) protrude over the liquid level in the vat.

Abstract: The present invention relates to a method of producing a dental restoration, comprising the steps of: generating (S101) a digital tooth model having a first spatial region in which a first restoration material is disposed and a second spatial region in which a second restoration material is disposed; rendering (S102) the digital tooth model to generate an actual data set representing optical properties of the digital tooth model; determining (S103) a deviation between a target data set and the actual data set; altering (S104) at least one of the first spatial region and the second spatial region to obtain a smaller deviation between the detected target data set and the actual data set of the re-rendered digital tooth model; and producing (S105) the dental restoration based on the digital tooth model having the smaller deviation.

Abstract: The present invention relates to a method for designing a dental restoration, comprising the steps of determining (S101) a target data set based on a natural tooth which reflects the optical properties and/or the geometry of the natural tooth; generating (S102) a digital tooth model with an internal architecture; rendering (S103) the digital tooth model based on the internal architecture to generate an actual data set representing the optical properties and/or the geometry of the digital tooth model; calculating (S104) a deviation between the target data set and the actual data set; and iteratively altering (S105) the digital tooth model to obtain a smaller deviation between the detected target data set and the actual data set of the re-rendered digital tooth model.

Abstract: The present invention relates to a method for comparing three-dimensional dental structures, comprising the steps of acquiring (S101) a target data set representing the shape and optical properties of a natural tooth; rendering (S102) a digital tooth model (200) to generate an actual data set representing the shape and optical properties of the digital tooth model; determining (S104) a first comparison value from the actual data set; determining (S105) a second comparison value from the target data set; and determining (S106) a deviation based on the first and second comparison values.