Glass-ceramic and its production and use
    55.
    发明授权
    Glass-ceramic and its production and use 有权
    玻璃陶瓷及其生产和使用

    公开(公告)号:US07091142B2

    公开(公告)日:2006-08-15

    申请号:US10725924

    申请日:2003-12-03

    摘要: The invention encompasses a glass-ceramic comprising a continuous glass phase and a crystal phase comprising tetragonal leucite, wherein the glass-ceramic has a crack-free glass phase and a crystal phase comprising leucite crystals distributed essentially homogeneously in the glass phase. The crystal phase has a particle size distribution made of from about 5% to about 70% of a first group of leucite crystals having particle sizes of

    摘要翻译: 本发明包括包含连续玻璃相的玻璃陶瓷和包含四方晶镁石的晶相,其中玻璃陶瓷具有无裂纹的玻璃相和包含基本均匀地分布在玻璃相中的白液晶的晶相。 晶相具有由具有颗粒大小为<1μm的第一组白云石晶体的约5%至约70%的粒度分布,以及具有颗粒的第二组白云石晶体的约30%至约95% 大小> = 1 mum。 玻璃 - 陶瓷中的Li 2 O 2的比例优选低于0.5重量%。 优选的是,不仅玻璃相也是晶相基本上没有裂纹。 相应的玻璃陶瓷特别适用于牙科领域,特别是面向陶瓷。

    Strengthened ceramic restoration
    57.
    发明申请
    Strengthened ceramic restoration 审中-公开
    加强陶瓷修复

    公开(公告)号:US20060099552A1

    公开(公告)日:2006-05-11

    申请号:US10526339

    申请日:2003-09-03

    IPC分类号: A61C5/10

    摘要: The present invention relates to a process for the preparation of a full-ceramic dental restoration, comprising heat pressing of a tooth coloured pressing glass on a fully or partially supporting structure of yttria doped tetragonal zirconia (YT/P), comprised of yttria doped tetragonal zirconia ceramic having a grain size, as measured by the linear intercept method, of less than 0.6 μm, wherein the pressing glass has a thermal expansion coefficient (TEC) of between 9.0 and 1.0 μm/m.K measured in the range of from 25 to 500° C.) and wherein the pressing glass has a pressing temperature of between 750 and 1000° C. In a further aspect, the invention relates to a full-ceramic dental restoration, comprising a fully or partially supporting structure of yttria doped tetragonal zirconia (YTZP) and a heat pressed tooth coloured pressing glass. which restoration is modelled to be in occlusal contact with opposing teeth and in mesio-distal contact with neighbouring teeth.

    摘要翻译: 本发明涉及一种制备全陶瓷牙科修复体的方法,其包括将氧化钇掺杂的四方晶氧化锆(YT / P)的全部或部分支撑的结构上的牙齿着色的压制玻璃热压,所述三氧化二钇掺杂的四氧化钇 通过线性截距法测量的具有小于0.6μm的颗粒尺寸的氧化锆陶瓷,其中压制玻璃的热膨胀系数(TEC)为9.0至1.0mum / mK,测量范围为25至500 °C),并且其中压制玻璃具有750至1000℃的压制温度。另一方面,本发明涉及一种全陶瓷牙科修复体,其包括掺杂氧化钇的四方晶氧化锆的完全或部分支撑的结构( YTZP)和热压牙齿彩色压制玻璃。 该修复被建模为与相对的牙齿咬合接触和与相邻牙齿的中远距离接触。