发明名称 |
Strengthened ceramic restoration |
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 (YTZP), comprised of yttria doped tetragonal zirconia ceramic having a grain size, as measured by the linear intercept method, of less than 0.6 mu m, wherein the pressing glass has a thermal expansion coefficient (TEC) of between 9.0 and 11.0 mu m/m.K (measured in the range of from 25 to 500 DEG C) and wherein the pressing glass has a pressing temperature of between 750 and 1000 DEG 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. |
申请公布号 |
EP1396237(A1) |
申请公布日期 |
2004.03.10 |
申请号 |
EP20020078708 |
申请日期 |
2002.09.05 |
申请人 |
ELEPHANT DENTAL B.V. |
发明人 |
VAN DER ZEL, JOSEPH MARIA;SLOR, JAN;GRINWIS, THEODORUS JACOBUS;DE KLER, MARCEL ANDRE;TSADOK HAI, TSADOK;KREUDER, PETER |
分类号 |
A61C5/10;A61C13/00;A61C13/08;A61C13/09;A61K6/06;C04B41/50 |
主分类号 |
A61C5/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|