Ivoclar Vivadent Ag

Io Tech Group Ltd.

University of Münster

Jürgen Rudolf Laubersheimer

Wolfgang Josef Wachter

Lorenz Josef Bonderer

Michael Zenou

Jörg Ebert

Jürgen Stampfl

Johannes Patzer

Johannes Homa

Gottfried Rohner

Rudolf Jussel

Wolfram Murr

Gerald Mitteramskogler

Nadja Schlechtriemen

Christian Werling

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.

Process for energy-pulse-induced transfer printing

Support material for energy-pulse-induced transfer printing

The invention relates to 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&#xb0; C. of from 0.2 Pas to 1000 Pas and a surface tension at 25&#xb0; C. of from 20 to 150 mN/m. The invention furthermore relates to a process for producing three-dimensional objects using the support material.

Slip for the stereolithographic preparation of ceramic or glass ceramic shaped parts which comprises (a) at least one radically polymerizable monomer, (b) at least one photoinitiator, (c) ceramic and/or glass ceramic particles and (d) at least one non-ionic surfactant.

Ceramic and glass ceramic slips for stereolithography

The invention relates to a method for the construction of a shaped body from photopolymerizable material by using lithography-based generative production, in which a layer of liquid photopolymerizable material is defined on a production platform, and is polymerized in an exposure region having a predetermined contour, a further layer of photopolymerizable material is defined, the layer defined last is polymerized in an exposure region having a predetermined contour for the layer defined last, and the latter two steps are repeated until a shaped body having a predetermined shape has been formed by the sequence of cured layers with contours predetermined layer by layer, each exposure in an exposure region having a predetermined contour being carried out by controlled activation of individual exposure elements in a two-dimensional array of exposure elements, each exposure element being assigned an image element, wherein the exposure of the exposure region is carried out by a common light source and by a two-dimensional light intensity modulator which is illuminated by the light source and which has a grid of individually controllable intensity modulators, in such a way that each illuminated intensity modulator forms and exposure element that exposes an image element in the exposure region, wherein a two-dimensional matrix is compiled for each exposure step of a layer, each element of the matrix being assigned to an exposure element in the array of exposure elements and control instructions for this exposure element being obtained in the form of a time-dependent function which individually establishes the intensity profile of the radiation of the exposure element over the exposure step, characterized in that, if a component of the intensity variation common to all time-dependent function of the intensity profiles of all exposure elements to be activated exists as a general intensity variation in an exposure step, this general intensity variation is carried out by controlling the intensity of the light source in accordance with the general intensity variation.

Method for the construction of a shaped body

The invention relates to a method for producing a dental restoration part, in which method, geometrical data, in particular data with respect to spatial dimensions, position and/or volume of the restoration part, are determined and stored in order to form a virtual restoration part. In a further process step, the virtual restoration part is provided for the tooth () to be replaced by using data of the tooth () to be replaced, a neighboring tooth () and/or a tooth stump, and said data is stored as color data and is used for the computer-assisted production of the virtual restoration part.

Method for producing a dental restoration part and CAD/CAM device

The invention concerns a microwave oven () for the heat treatment of ceramic components, in particular of dental ceramic components (). It is equipped with a susceptor () which is positioned in the swell or in the area between a source of microwaves and the component. The susceptor () is made of highly pure silicon carbide of hexagonal, rhombohedral or cubic crystal structure, which has in particular a 2H, 4H, 6H or 3C crystal structure.

Microwave oven

The invention relates to a method for the layered construction of a shaped body made of highly viscous photopolymerizable material.

Growing community of inventors

Buchs, Switzerland

Jürgen Rudolf Laubersheimer