Ivoclar Vivadent Ag

Io Tech Group Ltd.

Technische Universitāt Wien

Hendrik John

Rudolf Jussel

Christian Niedrig

Christian Ritzberger

Michael Zenou

Gottfried Rohner

Kai Rist

Marius Aster

Theresa Sujata Maria Senti

Martina Hauner-Westphal

Alexander Schöch

Rebecca Russ

Andreas Schülke

Alen Frey

Malte Hartmann

Jörg Ebert

Sonja Baumgartner

Katja Hönow

Tatiana Glebova

A method for layer-wise additive manufacturing of a shaped body made up of slices of processed layers, including the steps: A laser induced forward transfer (LIFT) process utilizing a laser to direct laser beam pulses acts on a coating of slurry on a carrier to transfer droplets of slurry to a receptor surface to create the slurry layer which is then processed further by above-mentioned steps of solidifying, and debinding and/or sintering.

Method for layer-wise manufacturing of a shaped body

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

Comparison of color images of three-dimensional dental structures

The present invention relates to a method for fabricating a dental restoration, comprising the steps of rendering (S) 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 (S) a first deviation between a target data set and the first actual data set; rendering (S) 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 (S) a second deviation between the target data set and the second actual data set; and fabricating (S) 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.

Method for fabricating a dental restoration

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

Building platform for building up a workpiece in layers or continuously

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

Method and device for building a shaped body by stereolithographic solidification of building material by photopolymerization

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 () 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 () 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.

Method for additive manufacturing of a three-dimensional product

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Buchs SG, Switzerland

Hendrik John