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AssigneesFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Vita Zahnfabrik H. Rauter GmbH & Co. KG, Degundent GmbH
InventorsBernhard Durschang, Jörn Probst, Norbert Thiel, Joachim Bibus, Markus Vollmann, Udo Schusser
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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.
A lithium silicate glass ceramic that includes at least 10 wt % ZrO2, from 55 to 70 wt % SiO2, and from 10 to 15 wt % LiO2 and having a main crystal phase consisting of lithium disilicate crystal.
Dependencies are inferred from the claim text.