Fluorescent Glass With High Content Of Cerium And Tin
OwnerMarc Dittmer, Markus Rampf +1inventors
InventorsMarc Dittmer, Markus Rampf, Christian Ritzberger
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Abstract
Glasses with high content of cerium and tin including the following components: Component Wt. - % SiO2 38.0 to 68.0 Cerium, calculated as CeO2 4.0 to 23.0 Tin, calculated as SnO 3.0 to 18.0 Li2O 1.0 to 5.0 Alkali metal oxide MeI2O 5.8 to 15.9 Oxide of divalent elements MeIIO 3.2 to 10.5 Oxide of trivalent elements MeIII2O3 3.5 to 11.8 and which are particularly suitable for the preparation of dental restorations whose fluorescence properties largely correspond to those of natural teeth.
Claims19
A glass containing cerium and tin, which comprises the following components in the amounts indicated:
- Component
- Wt. - %
- SiO2
- 38.0 to 68.0
- Cerium, calculated as CeO2
- 4.0 to 23.0
- Tin, calculated as SnO
- 3.0 to 18.0
- Li2O
- 1.0 to 5.0
- Alkali metal oxide MeI2O
- 5.8 to 15.9
- Oxide of divalent elements MeIIO
- 3.2 to 10.5
- Oxide of trivalent elements MeIII2O3
- 3.5 to 11.8,
- wherein
- MeI2O is selected from Na2O, K2O, Rb2O, and/or Cs2O,
- MeIIO is selected from MgO, CaO, SrO, BaO and/or ZnO,
- MeIII2O3 is selected from Al2O3, B2O3, Y2O3, La2O3, Dy2O3, Ga2O3, and/or In2O3.
Dependencies are inferred from the claim text.