| 摘要 |
<p>Stain-resistant tetrasilicic fluormica glass-ceramic compositions suitable for the fabrication of dental constructs or the like, falling within the alkali-MgF2- MgO-SiO2 composition system, but comprising minor additions of ZrO2 and, optionally, Al2O3 to impart a high degree of stain resistance, are disclosed.</p> |
