Leucite Dental Ceramics

Page: 856

A. Kloužkováa, M. Mrázováb, M. Kohoutkovác, and J. Kloužekb

a Department of Glass and Ceramics, b Laboratory of Inorganic Materials, Institute of Chemical Technology, Prague and Institute of Rock Structure and Mechanics, Academy of Sciences of the Czech Republic, c Central Laboratories, Institute of Chemical Technology, Prague

 

Dental ceramics are the most frequently used materials for dental prostheses. They are usually prepared from metal – ceramic systems where the ceramic part is fused to the metal construction. At present, newly developed technologies brought about an increasing use of all-ceramic replacements which are composed of different types of ceramic materials with varying glass content. Leucite ceramic is an important crystalline component of most all-ceramic and in particular metal-ceramic replacements. Industrial synthesis of leucite is time-consuming and so new synthetic ways are currently sought. One of the pro¬mising ways is the preparation by hydrothermal synthesis having the advantage of a low preparation temperature and the product consisting of uniform particles, which can be mixed and subsequently sintered at relatively low temperatures (~1000 °C) in equipment of dental laboratories. Improved mechanical properties of dental ceramics, in particular its fragility, can be expected.

 

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