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1.发明授权公开(公告)号：US09701572B2
公开(公告)日：2017-07-11
申请号：US14671253
申请日：2015-03-27
发明人： Markus Vollmann , Udo Schusser
CPC分类号： C03C10/0009 , A61C13/0022 , A61K6/024 , A61K6/0273 , C03B19/02 , C03B32/02 , C03C3/097 , C03C4/0021 , C03C10/0027
摘要： The invention relates to a method for producing a blank of lithium silicate glass a starting composition of at least 8 wt-% of a stabilizer selected from the group consisting of ZrO2, HfO2, and mixtures thereof, wherein the method includes the steps of mixing the raw materials comprising the stabilizer in powder form, wherein the powder of the stabilizer has a particle size d50=x with 0.3 μm≦x≦1.5 μm, melting the raw materials in a crucible at a temperature TAU and storing the melt in the crucible for a time tH, pouring the homogenized melt into molds, wherein the melt flows out of the crucible with a discharge temperature TAB being TAU≧TAB, wherein the filling of the molds and the molding of the melt in the molds takes place with a cooling rate A.
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公开(公告)号：US09737465B2
公开(公告)日：2017-08-22
申请号：US14892369
申请日：2014-04-30
发明人： Stefan Fecher , Heiner Hörhold , Udo Schusser , Markus Vollmann , Martin Kutzner
IPC分类号： C03C10/04 , A61K6/027 , A61C13/00 , C03C4/00 , C03C10/00 , C03B32/02 , C03B19/06 , C03B19/10 , C03B32/00 , C03C3/097 , A61K6/02
CPC分类号： A61K6/0273 , A61C13/0022 , A61K6/024 , C03B19/06 , C03B19/1005 , C03B19/1055 , C03B19/1095 , C03B32/00 , C03B32/02 , C03C3/097 , C03C4/0021 , C03C10/0027
摘要： The invention relates to a blank for producing a dental molded part such as an inlay, onlay, crown or bridge, and to a method for producing the blank. To be able to machine a dental molded part, in particular one having thin wall thicknesses, from the blank without difficulty, the blank is designed to consist of a glass ceramic having a density of between 30 and 60% of theoretical density, and of glass-ceramic powder particles with a particle size distribution d90≦80 μm, lithium silicate crystals being present in an amount of 10 to 90% by volume.
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