| 专利名称： | Zirconia ceramic article |
| 公开（告）号： | |
| 公开（公告）日： | 2006-12-14 00:00:00 |
| 申请（专利）号： | DE19996030428T(DE69930428T) |
| 申请日： | 2003-09-03 00:00:00 |
| 发明（设计）人： | ELEPHANT DENTAL BV (NL) |
| (申请)专利权（人）： | VAN DER ZEL MARIA (NL);SLOR JAN (NL) |
| 内容： | 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. |
发布日期：2007-08-17 08:35:00