Dual-cure cement
Patent 4886843 Issued on December 12, 1989. Estimated Expiration Date: 
January 25, 2008. 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 25, 2008. 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 2961426 3113907 3133042 3141903 3167583 3635889 Method of treating living pulp tissue Patent #: 4813876 InventorAssigneeApplicationNo. 147866 filed on 01/25/1988US Classes:522/174, Nitrogen containing reactant contains a N-C=O or N-C=O moiety433/224, Endodontic522/28, Specified rate-affecting material contains phosphorous, arsenic, antimony or nitrogen522/81, Heavy metal containing DNRM522/96, With ethylenic reactant522/173, Processes of preparing a solid polymer from at least one nitrogen containing monomer; or compositions therefore522/181, Ether group522/183, Oxygen other than as part of a COO-group523/116, Cement or filling composition524/779, Elemental metal or metal compound not containing silicon DNRM526/304, Contains oxygen atom other than in amide form bonded to a carbon atom526/313, From phenol, phenol ether, or inorganic phenolate monomer528/205Ethylenically unsaturated reactantExaminersPrimary: Jacobs, Lewis T.Assistant: Koeckert, Arthur H. Attorney, Agent or FirmForeign Patent References
International ClassesC08F 002/50C08G 079/00 C08J 003/28 Foreign Application Priority Data1987-02-06 GBAbstractThe compositions of this invention posses both calcium hydroxide cement characteristics and light cure characteristics and hence strong bonds are likely to form with both the tooth and conventional filling materials. There is less likelihood that a filling may fall out of a cavity.The present invention provides a two component composition which comprises a first component comprising an ethylenically polymerizable compound which contains both a salicylate group and at least one acrylate, alkacrylate, acrylamide or alkacrylamide group and second component comprising calcium hydroxide or a suitable precursor to calcium hydroxide.Other References
Field of SearchFrom phenol, phenol ether, or inorganic phenolate monomer | |
