Leucitová dentální keramika

  • A. Kloužková Ústav skla a keramiky, Vysoká škola chemicko-technologická v Praze, Praha
  • M. Mrázová Laboratoř anorganických materiálů, společné pracoviště Vysoké školy chemicko-technologické v Praze a Ústavu struktury a mechaniky hornin AVČR, v.v.i., Praha
  • M. Kohoutková Centrální laboratoře, Vysoká škola chemicko-technologická v Praze, Praha
  • J. Kloužek Laboratoř anorganických materiálů, společné pracoviště Vysoké školy chemicko-technologické v Praze a Ústavu struktury a mechaniky hornin AVČR, v.v.i., Praha
Klíčová slova: dentální keramika, leucit, koeficient délkové teplotní roztažnosti

Abstrakt

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 pro­mising 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.

Publikované
2013-11-15
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