Use of bioactive glass in dental filling material
March 8, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3862920 3926906 Pigment package for dental filling materials Curable resinous composition Alkali-free bioactive sol-gel compositions Preparation of very fine glass powder of high purity Bioactive cement Compositions containing bioactive glass and their use in treating tooth hypersensitivity Dental repair composition and method Use of bioactive silicious glass and new compositions containing bioactive silicious glass InventorsAssigneeApplicationNo. 10471148 filed on 03/08/2002US Classes:106/35, Dental523/116, Cement or filling composition523/117, Radio- or X-ray opaque523/115, Composition suitable for use as tooth or bone replacement, restorative, or implant433/226, By filling, bonding or cementing433/228.1, By named composition433/217.1, By lining or coating501/57, Fluorine523/105, Nonmedicated composition specifically intended for contact with living animal tissue or process of preparing; other than apparel433/81EndodonticExaminersPrimary: Koslow, C. MelissaAttorney, Agent or FirmForeign Patent References
International ClassesA61K 6/06A61K 6/083 AbstractThe dental filling material for a permanent dental filling contains up to 87 percent by weight of a mixture of bioactive glass particles capable of forming a hydroxylapatite layer and conventional non-bioactive dental glass particles surrounded or embedded in a matrix material. The glass particles have an average particle size (d50) less than 50 μm. When the index of refraction of the glass particles at least approximately matches the index of refraction of the matrix material a particularly attractive appearance results when the resulting filling material is used to make a dental filling. When the bioactive glass particles contain fluoride, protection against further caries is provided. The invention also includes a method of making the dental filling material, the dental filling made with it and a binder for binding the dental filling to a tooth.Other References
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