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Dentin-polymer bond mediated by glutaraldehyde/HEMA.

E C Munksgaard, E Asmussen

    Scandinavian Journal of Dental Research
    |October 1, 1985
    PubMed
    Summary
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    A new bonding method using glutaraldehyde and HEMA on EDTA-treated dentin shows strong, durable resin bonds. This dental adhesive technique is effective and stable for at least six months.

    Area of Science:

    • Biomaterials Science
    • Dental Materials
    • Adhesive Dentistry

    Background:

    • Effective bonding of restorative resins to dentin is crucial for durable dental restorations.
    • EDTA (ethylenediaminetetraacetic acid) treatment modifies dentin surfaces for improved adhesion.
    • Glutaraldehyde and HEMA (2-hydroxyethyl methacrylate) are commonly used in dental adhesives.

    Purpose of the Study:

    • To evaluate the bond strength and durability of a restorative resin bonded to EDTA-treated dentin.
    • To assess the efficacy of a glutaraldehyde/HEMA mixture as a bonding agent in this context.

    Main Methods:

    • Restorative resin was bonded to dentin pre-treated with EDTA.
    • A bonding mixture of glutaraldehyde and HEMA was applied.
    • Tensile bond strength was measured, and samples were stored in water at 37°C for up to 6 months.

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    Main Results:

    • The bond exhibited a mean tensile strength of 17.5 +/- 1.0 MPa.
    • The bond strength remained unaffected by water storage for up to 6 months.
    • Optimal effectiveness of the glutaraldehyde/HEMA mixture was observed at pH 2-5, with 10-second application time.

    Conclusions:

    • The glutaraldehyde/HEMA mixture provides a strong and durable bond to EDTA-treated dentin.
    • This bonding system demonstrates excellent stability in a simulated oral environment.
    • Optimized pH and application time enhance the performance of this dental adhesive.