Roland Strietzel
2010
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0
Influential Citations
6
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Abstract
In dentistry destroyed enamel and/or dentine has to be replaced by artificial materials. If the defects are too big also complete teeth have to be replaced. Therefore materials for fillings (e. g. composites, amalgams, alloys or ceramics) and for crown and bridges (acrylics, ceramics, metals) have to be distinguished. The present article will focus on metallic materials for the production of frameworks. The most common way to fabricate metallic frameworks is casting. In this process the dental technician transfers the impression made by the dentist into a model (most made of gypsum). Then the framework is molded with wax. After this he invests the wax modelations and sprueings in special investment materials. In special furnaces the wax is burned out. In those hollow spaces the alloy is than cast. After embedding the framework is polished or veneered with ceramics or composites. Several different hundred metals are available for frameworks. They may be classified due to their usage (e. g. inlays/onlays, crown and bridges or for abstract