Porcelain compositions for low expansion all-porcelain cores and alloys
AssigneePentron Laboratory Technologies, LLC
InventorsDmitri Brodkin, Carlino Panzera, Paul Panzera
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Abstract
A dental porcelain composition comprises an amorphous glass phase with a maturing temperature less than about 850° C., wherein the amorphous glass phase, in one embodiment, comprises: Component Amount (wt. %) SiO2 55-75 B2O3 2.6-6 Al2O3 3-4.9 ZnO 0-3 CaO 0-3 MgO 0.5-3 ZrO2 0-3 BaO 0-2 Li2O 0.8-2 K2O 0-6.5 Na2O 2-15 Tb4O7 0-1 TiO2 0-3 CeO2 0-1 F 0-2
Claims20
A dental porcelain composition comprising an amorphous glass phase with a maturing temperature less than about 850° C., said amorphous glass phase comprising:
- Component Amount (wt. %) SiO2 55-75 B2O3 2.6-6 Al2O3 3-4.9 Na2O 2-15 MgO 0.5-3 Li2O 0.8-2.
A dental porcelain composition comprising an amorphous glass phase with a maturing temperature less than about 850° C., said amorphous glass phase comprising:
- Component Amount (wt. %) SiO2 55-75 B2O3 2.6-6 Al2O3 2-4.9 Na2O 6-10 K2O 6-10 Li2O 0.8-2 MgO 0.8-3
A dental porcelain composition comprising an amorphous glass phase with a maturing temperature less than about 850° C., said amorphous glass phase comprising:
- Component Amount (wt. %) SiO2 55-75 B2O3 2.6-6 Al2O3 3-9 Na2O 2-15 K2O 0.5-4 ZnO 0-3 CaO 0-3 MgO 0-3 ZrO2 0-3 BaO 0-2 Li2O 0-2 Tb4O7 0-1 TiO2 0-3 CeO2 0-1 F 0-2
A dental porcelain composition comprising an amorphous glass phase with a maturing temperature less than about 850° C., said amorphous glass phase comprising:
- Component Amount (wt. %) SiO2 55-75 B2O3 2.6-6 Al2O3 3-9 Na2O 14.1-17 ZnO 0-3 CaO 0-3 MgO 0-3 ZrO2 0-3 BaO 0-2 Li2O 0-2 K2O 0-6.5 Tb4O7 0-1 TiO2 0-3 CeO2 0-1 F 0-2
Dependencies are inferred from the claim text.