ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 53, (3) 225 - 230 (2009)

Mrázová Martina 1, Kloužková Alexandra 2
1 Laboratory of Inorganic Materials, Joint Workplace of the Institute of Chemical Technology Prague and the Institute of Inorganic Chemistry ASCR, v.v.i., Technická 5, 166 28 Prague, Czech Republic
2 Institute of Chemical Technology Prague, Department of Glass and Ceramics, Technická 5, 166 28 Prague, Czech Republic

Keywords: Dental restoration, Leucite, Ceramics, Crystallization

The aim of this work is to provide an overview of dental porcelains fused to metal used for dental restorations. The paper shortly adverts to a historical development of leucite ceramics as well as to a description of leucite itself. A ternary-phase equilibrium diagram of the K₂O-Al₂O₃-SiO₂ system with its area of the primary crystallisation of leucite is briefly discussed. The methods of preparing industrially produced leucite powder as well as new, ‘low temperature’ methods are presented. The fusing temperature of leucite porcelain with regards to its resultant properties is also discussed.

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