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

US10765496B2 · kind B2 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• Vita Zahnfabrik H. Rauter GmbH & Co. KG · DE
• DeguDent GmbH · DE

Inventors

• Bernhard Durschang · Rottendorf, DE
• Jörn Probst · Bad Wurzach, DE
• Norbert Thiel · Annaberg-Buchholz, DE
• Joachim Bibus · Bad Säckingen, DE
• Markus Vollmann · Gelnhausen, DE
• Udo Schusser · Alzenau, DE

Key dates

• Filing date: Dec 20, 2018
• Grant date: Sep 8, 2020
• Expiry date: Dec 20, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C10/0027
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

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.