Vita Zahnfabrik H. Rauter Gmbh Co. Kg

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Degudent Gmbh

Nokia Graetz

Vita Zahnfabrik H. Rauter Gmbh & Co.

Sirona Dental Systems Gmbh

Standard Elektrik Lorenz Ag

Degundent Gmbh

Sms Group Gmbh

Norbert Thiel

Markus Vollmann

Udo Schusser

Bernhard Durschang

Joachim Bibus

Jörn Probst

Michael Dorn

Michael Gödiker

Stefan Aechtner

Michael Tholey

Rolf Zondler

Volker Gerstle

Emil Nagel

Marc Stephan

Olivia Albarski

Andreas Schmid

Michael Godiker

Vilma Geske

Otto Lederle

Enno Bojemueller

Helga Hornberger

Joern Probst

Joachim Pfeiffer

Michael Hackner

Carsten Wiesner

Wolfgang Burger

Matthias Arzberger

Lothar Schaps

Birgit Huber

Gabriele Datzmann

Wolfgang Leonhardt

Ina Hüllen

Jorn Probst

Wilhelm Schneider

Enno Bojemüller

Kerstin Herbst

Susanne Weber

Michael Goediker

Michael GÖDIKER

Reiner KÜLCHEN

Paul-Christian Hopp

Thomas Pursche

A non-dense sintered ceramic molded body having at least two layers, wherein a first powdery ceramic material forming a layer is contacted with at least a second powdery material forming at least a second layer. The body has a color gradient and maintains dimensional stability during sintering and forming. An admixing component and a common sintering temperature are used to control the volume decrease of the layers during sintering.

Non-dense sintered ceramic molded body having at least two layers

The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

Lithium disilicate glass-ceramic, method for production thereof and use thereof

The invention relates to glass ceramics based on the lithium metasilicate system (LiO.SiO(LiSiO)), which are mechanically processible in a simple manner in an intermediate stage of the crystallization and, after complete crystallization, represent a high-strength, highly translucent and chemically stable glass ceramic.

Lithium silicate glasses or glass ceramics, method for production thereof and use thereof

A process for producing a non-dense sintered ceramic molded body having at least two layers, wherein a first powdery ceramic material forming a layer is contacted with at least a second powdery material forming at least a second layer; said first powdery material has a presintering temperature Tthat is higher than the presintering temperature Tof said at least second powdery ceramic material; the course of a curve of shrinkage Sof said at least first powdery ceramic material differs from the course of a curve of shrinkage Sof said at least second powdery material, wherein curve of shrinkage Sis shifted towards higher temperatures as compared to curve of shrinkage S; and the layers are subjected to a common temperature treatment at a presintering temperature Tthat is lower than the presintering temperature Tand at least equal to Tto cause sintering that remains in a stage of sintering that has not proceeded to the theoretical density; wherein the curve of shrinkage Sis modified by admixing at least one component having a curve of shrinkage Swhich material is compatible with said powdery ceramic material into said first powdery ceramic material, i. e. has a grain size smaller than the first powdery ceramic material, to equalize the curves of shrinkage Sand Sin the region of the presintering temperature T.

Process for producing a non-dense sintered ceramic molded body having at least two layers

The invention relates to glass-ceramics based on the lithium disilicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

A porous, silicate, ceramic body, optionally with different colors, with a first density, can be sintered into a silicate, ceramic body with a second density, wherein the ratio of the first density to the second density is 2/5 to 98/100, and the three-point bending strength of the porous, silicate ceramic body with a first density, measured according to ISO 6872, is 25 to 180 MPa.

Porous silicate ceramic body, dental restorations and method for the production thereof

The present invention relates to a porous, silicate, ceramic body, possibly with different colors, with a first density, which can be sintered into a silicate, ceramic body with a second density, wherein the ratio of the first density to the second density is 2/5 to 98/100, and the three-point bending strength of the porous, silicate ceramic body with a first density, measured according to ISO 6872, amounts to 25 to 180 MPa.

Porous, silicate, ceramic body, dental restoration and method for the production thereof

The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallization and, after complete crystallization, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

The invention refers to a method for producing a dental restoration comprising a lithium silicate glass or glass ceramic as well as a dental restoration inself. The invention further refers to a ingot with the same composition having a defined strength.

Dental restoration, method for its production and ingot

Molded member made of form-stabilized material, comprising at least one first component and one second component, characterized in that the second component has a different pigmentation than the first component and the second component is disposed inside the first element, forming a boundary surface, in such a way that the boundary surface represents a spatially curved surface.

Molded member made of form-stabilized material and method for the manufacture thereof

The invention relates to glass-ceramics based on the lithium disilicate system which can be mechanically machined easily in an intermediate step of crystallization and, after complete crystallization, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

The invention relates to glass ceramics, which show high strength, high translucency, high chemical stability and which are still mechanically processible. The invention further refers to a method for producing a dental restoration comprising such glass or glass ceramic as well as the dental restoration itself.

Dental restoration, method for production thereof and glass ceramic

The invention relates to glass ceramics based on the lithium metasilicate system (LiOSiO(LiSiO)), which are mechanically processible in a simple manner in an intermediate stage of the crystallization and, after complete crystallization, represent a high-strength, highly translucent and chemically stable glass ceramic.

Lithium silicate glass ceramic, method for production thereof and use thereof

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Bad Säckingen, Germany

Norbert Thiel