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    • 1. 发明申请
    • MULTI-LAYERED ZIRCONIA DENTAL MILL BLANK AND PROCESS OF PRODUCTION
    • 多层锆石牙面铣床和生产工艺
    • WO2017189344A1
    • 2017-11-02
    • PCT/US2017/028717
    • 2017-04-21
    • 3M INNOVATIVE PROPERTIES COMPANY
    • DITTMANN, Rainer K.SCHNAGL, Hans R.KINDLER, GritTHEELKE, BjörnSOGL, MichaelURBAN, Michaela
    • A61C13/00
    • A61C13/0022A61C13/082A61C13/083C04B35/48C04B2235/9661
    • The invention relates to a porous multi-layered coloured zirconia dental mill blank comprising a bottom layer B having the composition COMP-B which comprises ceramic components CER-COMP-B, colouring components COL-COMP-B and stabilizing components STAB-COMP-B, a top layer E having the composition COMP-E which comprises ceramic components CER-COMP-E, colouring components COL-COMP-E stabilizing components STAB-COMP-E, at least one intermediate layer Ex having the composition COMP-E of top layer E, at least one intermediate layer Bx having the composition COMP-B of bottom layer B, x being an integer and indicating the number of intermediate layers, wherein the layers with compositions COMP-B and COMP-E are arranged in alternating order, and wherein the thickness of the individual layers B, Bx is decreasing from bottom to top and the thickness of the individual layers E, Ex is decreasing from top to bottom. The dental mill blank can be used for producing dental articles.
    • 本发明涉及多孔多层彩色氧化锆牙科研磨坯,其包含具有组合物COMP-B的底层B,其包含陶瓷组分CER-COMP-B,着色组分COL-COMP-B 和稳定组分STAB-COMP-B,具有包含陶瓷组分CER-COMP-E的组合物COMP-E的上层E,着色组分COMP-E稳定组分STAB-COMP-E,至少一个中间层Ex 具有顶层E的组合物COMP-E,至少一个具有底层B的组合物COMP-B的中间层Bx,x是整数并指示中间层的数量,其中组合物COMP-B和COMP -E以交替顺序排列,并且其中各个层B,Bx的厚度从底部到顶部逐渐减小,并且各个层E,Ex的厚度从顶部到底部逐渐减小。 牙科磨毛坯可用于生产牙科用品。