Zweiphasige Dentalporzellanzusammensetzung
- 专利权人:
- JENERIC/PENTRON Inc.
- 发明人:
- Lisa DiMeglio,Carlino Panzera
- 申请号：
- DE69703458
- 公开号：
- DE69703458T3
- 申请日:
- 1997.03.11
- 申请国别(地区):
- DE
- 年份:
- 2013
- 代理人:
- 摘要：
- A two-phase porcelain composition for dental restorations comprising a leucite crystallite phase dispersed in a feldspathic glass matrix, a maturing temperature of from about 750° to about 1050° C. and a coefficient of thermal expansion of from about 12×10.sup.- 6 /. degree.C. to about 17.5×10.sup.-6 /°C., said porcelain composition comprising:
______________________________________
Component Amount (wt. %)
______________________________________
SiO.sub.2 57-66
Al.sub.2 O.sub.3
< P> 7-15
K.sub.2 O 7-15
Na.sub.2 O 7-12
Li.sub.2 O 0.5-3
CaO 0-3 < P>
MgO 0-7
F 0-4
CeO.sub.2 0-1
______________________________________
< P>
wherein the leucite crystallites possess diameters not exceeding about 10 microns and represent from about 5 to about 65 weight percent of the two-phase porcelain composition.
- 来源网站：
- 中国工程科技知识中心
