Fluoride-releasing amalgam dental restorative material
AssigneeMCG Research Institute, Medical College of Georgia
InventorsFred Rueggeberg, Gary Whitford, Don Mettenburg
Life of this patent
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Abstract
A fluoride-releasing dental amalgam composition for a tooth restoration comprising a dental amalgam alloy material and an fluoride-containing, the glass particulate powder component of a fluoride-leachable acid-etchable glass ionomer cement. The invention further provides a method for using the composition to prevent or reduce secondary caries in an existing tooth restoration, which is classified as a dental amalgam in nature.
Claims2
A method of reducing secondary caries around an existing tooth restoration comprising the step of placing the fluoride releasing dental amalgam composition for a tooth restoration comprising a mixture of a dental amalgam alloy material and a glass particulate powder component of a fluoride-containing, fluoride-leachable acid-etchable glass ionomer cement, wherein the amalgam alloy material comprises:
- 40-70% Silver
- 26-30% Tin
- 2-30% Copper
- 0-2% Zinc
- and the glass particulate powder comprises:
- 41.9-35.2% SiO2
- 28.6-20.1% Al2O3
- 1.6-2.4% AIF3
- 15.7-20.1% CaF2
- 9.3-3.6% NaF
- 3.8-12.0% AlPO4
- in a prepared cavity area prone to tooth decalcification and/or overt decay.
A tooth bonded to the fluoride-releasing dental amalgam composition for a tooth restoration comprising a mixture of a dental amalgam alloy material and a glass particulate powder component of a fluoride-containing, fluoride-leachable acid-etchable glass ionomer cement, wherein the amalgam alloy material comprises:
- 40-70% Silver
- 26-30% Tin
- 2-30% Copper
- 0-2% Zinc
- and the glass particulate powder comprises:
- 41.9-35.2% SiO2
- 28.6-20.1% Al2O3
- 1.6-2.4% AIF3
- 15.7-20.1% CaF2
- 9.3-3.6% NaF
- 3.8-12.0% AlPO4.
Dependencies are inferred from the claim text.