Leucite Dental Ceramics
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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