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US 11,724,956 B2Granted
Glass composition and glass powder, in particular for the use in the dental field
AssigneeSchot T AG
InventorsSabine Pichler-Wilhelm, Jens Suffner, Simone Monika Ritter
Life of this patent
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Abstract
The present disclosure relates to a glass composition as well as a glass powder. The disclosure also relates to the use in the dental field, e.g. as dental material such as dental filling or dental restauration material, in particular as or for the production of a glass ionomer cement, for example for the treatment and/or for the filling of cavities in human and/or animal teeth and/or for tooth restoration.
Claims20
A glass comprising the following components in % by weight:
- Component
- Proportion (% by weight)
- component 1
- 22 to 42
- component 2
- 28 to 53
- component 3
- 5 to 35
- component 4
- 7 to 20
- wherein the proportion (% by weight) component 1 comprises a sum proportion of SiO2 and P2O5,
- wherein the proportion (% by weight) component 2 comprises a sum proportion MgO, CaO, SrO, BaO, ZnO, Al2O3, Sc2O3, Y2O3, La2O3 and Yb2O3,
- wherein the proportion (% by weight) of component 3 comprises a sum proportion of Li2O, Na2O, K2O and Cs2O,
- wherein the component 4 is F,
- wherein the glass contains at least one X-ray absorbing component selected from the group consisting of:
- Y2O3, Yb2O3, La2O3, SrO, BaO, and Cs2O,
- wherein the total content of B2O3, ZnO, ZrO2 and La2O3 is less than 20% by weight, and
- wherein the glass contains less than 5% by weight of B2O3.
15 more elements
Dependencies are inferred from the claim text.