Bioactive cement
Patent 5527836 Issued on June 18, 1996. Estimated Expiration Date: 
January 31, 2014. 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.
January 31, 2014. 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 3853962 Bioactive composite material process of producing and method of using same Acrylic polymerization systems and diacyl peroxide catalysts therefor Patent #: 4156766 InventorsAssigneeApplicationNo. 190040 filed on 01/31/1994US Classes:523/116, Cement or filling composition523/114, Composition which anchors by ingrowth of surrounding tissue523/115, Composition suitable for use as tooth or bone replacement, restorative, or implant524/414, Phosphorus atom DNRM524/430, A single type of metal atom and only oxygen atoms DNRM, e.g., metal oxide, etc.524/433, Group IIA metal atom (i.e., Be, Mg, Ca, Sr, Ba)524/436Group IIA metal DNRM (i.e., Be, Mg, Ca, Sr, Ba)ExaminersPrimary: Michl, Paul R.Assistant: Guarriello, John J. Attorney, Agent or FirmForeign Patent References
International ClassA61K 006/06Foreign Application Priority Data1992-02-28 JPAbstractA bioactive cement comprises a filler consisting of nonalkali glass powder containing Ca, monomer containing hydrophilic dimethacrylate, a polymerization starter, and a polymerization promotor. The nonalkali glass powder containing Ca comprises a composition by weight of 40-50% CaO, 30-40% SiO2, 10-20% P2 O5, 0-10% MgO, and 0-2% CaF2. The hydrophilic dimethacrylate is 2,2-bis[4-(3-methacryloxy-2-hydroxy propoxy)phenyl]propane. The bioactive cement is capable of forming a hydroxyapatite layer on a surface of a hardened cement body when the hardened cement body is brought into contact with body fluid.Other References
Field of SearchCement or filling compositionComposition which anchors by ingrowth of surrounding tissue Composition suitable for use as tooth or bone replacement, restorative, or implant Group IIA metal atom (i.e., Be, Mg, Ca, Sr, Ba) A single type of metal atom and only oxygen atoms DNRM, e.g., metal oxide, etc. Phosphorus atom DNRM Group IIA metal DNRM (i.e., Be, Mg, Ca, Sr, Ba) Dental Specialized coating or material | |
