| abstract |
A method of making a dental restoration comprising forming a ceramic core or an alloy framework; pressing a porcelain onto the core or framework, wherein the porcelain comprises an amorphous glass phase with a maturing temperature less than about 850° C., wherein the amorphous glass phase, in one embodiment, comprises: n Component Amount (wt. %) SiO 2 55-75 B 2 O 3 2.6-6 Al 2 O 3 3-4.9 ZnO 0-3 CaO 0-3 MgO 0.5-3 ZrO 2 0-3 BaO 0-2 Li 2 O 0.8-2 K 2 O 0-6.5 Na 2 O 2-15 Tb 4 O 7 0-1 TiO 2 0-3 CeO 2 0-1 F 0-2 |