Broad spectrum light curable dental compositions

Patent 4411625 Issued on October 25, 1983. Estimated Expiration Date:

June 10, 2002. 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.

Abstract Claims Description Full Text

Patent References

3254411

3488269

3677920

3709866

3759809

3825518

3864133

Photopolymerizable vinylurethane liquid composition
Patent #: 3954584
Issued on: 05/04/1976
Inventor: Miyata , et al.

Modified acrylate resin
Patent #: 3968181
Issued on: 07/06/1976
Inventor: Uzelmeier , et al.

U.V. Curable poly(ether-urethane) polyacrylates and wet-look polymers prepared therefrom
Patent #: 4065587
Issued on: 12/27/1977
Inventor: Ting

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Inventors

Assignee

Dentsply Research & Development Corp.

Application

No. 06/386897 filed on 06/10/1982

US Classes:

433/217.1, By lining or coating106/35, Dental260/998.11, DENTAL433/199.1, Denture base construction433/201.1, Dental implant construction433/202.1, Tooth construction433/212.1, Nonmetallic composite433/222.1, Composite433/228.1, By named composition522/10, With a tertiary amine specified rate-affecting material522/77, Silicon containing DNRM522/81, Heavy metal containing DNRM522/96, With ethylenic reactant523/115, Composition suitable for use as tooth or bone replacement, restorative, or implant523/116, Cement or filling composition523/117Radio- or X-ray opaque

Examiners

Primary: Hayes, Monroe H.

Attorney, Agent or Firm

Woodcock, Washburn, Kurtz, Mackiewicz & Norris

International Classes

C08G 18/00 (20060101)
C08G 18/67 (20060101)
A61K 6/02 (20060101)
A61K 6/083 (20060101)

Abstract

Dental restorative composition are provided having improved color stability. According to a preferred embodiment, such compositions comprise a blend of a major proportion of inorganic, particulate filler, and a minor proportion of a resin component comprising a binder resin, a diluent monomer and a three part photosensitizing system comprising an alpha diketone, an amine reducing agent, and a benzoin alkyl ether. The superior color stability and other properties of restorative compositions of this invention are believed to result from synergistic interactions among the components of the sensitizing system.