专利名称：Powdered dental material and process for
the preparation thereof
发明人：John W. McLean,Oswald Gasser申请号：US06/563749申请日：19831221公开号：US04527979A公开日：19850709
摘要：Powdered dental material of a sintered mixture of calcium aluminum
fluorosilicate glass and precious metals (or alloys thereof with each other or with up to40% non-precious metals), which may optionally contain polycarboxylic acid and/or achelating agent and/or further powdered precious metal. The dental material can beprepared by sintering a mixture of the glass and the precious metal at a temperaturegreater than 600° C., grinding the sintered product to a powder and admixing theoptional further components. Use of the self-hardening glass ionomer cements fordental filling purposes gives fillings having excellent resistance to wear, most notably atthe edges and corners in the molar region.
申请人：ESPE, FABRIK PHARMAZEUTISCHER PRAEPARATE GMBH
代理机构：Birch, Stewart, Kolasch & Birch
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