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    Quaternary Ammonium and Nano Silver in Epoxy Resin Based Endodontic Sealer

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    Author
    Seung, Juheon
    Advisor
    Tordik, Patricia
    Date
    2017
    Type
    dissertation
    
    Metadata
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    Abstract
    The purpose of this study is to investigate how the addition of antibacterial materials, Di-methylaminododecyl methacrylate (DMAHDM), and Nano-Silver (NAg) to AH Plus® will affect the mechanical and antibacterial properties of the sealer. Setting time, flow, dimensional change and solubility were evaluated as a set of mechanical tests according to ANSI/ADA specifications. Direct contact test (DCT) was performed to evaluate antibacterial properties at day 1,7 and 14 after mixing against E.faecalis. The DCT was measured with optical density (OD) and colony-forming units (CFU) counts. When 0.15%NAg and 2.5% DMAHDM was incorporated into AH Plus®, there was no significant difference in mechanical properties and improved antibacterial properties through 14 days when compared to AH Plus® alone. This study found that up to 0.15% NAg and 2.5% DMAHDM can be added to AH Plus® without changing the existing mechanical properties of AH Plus® while incorporating long-term antibacterial properties.
    Description
    University of Maryland, Baltimore. Biomedical Sciences-Dental School. M.S. 2017
    Keyword
    AH Plus
    direct contact test
    E. faecalis
    endodontic sealer
    nano silver
    Enterococcus faecalis
    Quaternary Ammonium Compounds
    Identifier to cite or link to this item
    http://hdl.handle.net/10713/6741
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    Theses and Dissertations School of Dentistry
    Theses and Dissertations All Schools

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