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Comparative study: bond strength and microleakage with dentin bond systems.

Y H Tsai, M L Swartz, R W Phillips

    Operative Dentistry
    |March 1, 1990
    PubMed
    Summary
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    Gluma demonstrated superior sealing ability in Class 5 erosion lesions compared to other dental bonding agents. While initial bond strengths were similar, Gluma maintained better marginal integrity over time, indicating its effectiveness in dental restorations.

    Area of Science:

    • Dentistry
    • Biomaterials Science
    • Dental Materials

    Background:

    • Dental composites require effective bonding agents for durable restorations.
    • Class 5 erosion lesions present challenges for sealing without cavity preparation.
    • Evaluating the long-term performance of commercial bonding agents is crucial.

    Purpose of the Study:

    • To compare the bond strength and marginal sealing ability of four commercial bonding agents.
    • To assess the performance of these agents in Class 5 erosion lesions without cavity preparation.
    • To investigate the relationship between bond strength and marginal leakage over time.

    Main Methods:

    • Four commercial bond agent-composite systems (Scotchbond, Gluma, Tenure, Scotchbond 2) were tested.
    • Bond strength to bovine dentin was measured.

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  • Marginal leakage of Class 5 erosion lesions was evaluated at seven and 90 days.
  • Correlation between bond strength and marginal leakage was analyzed.

    • Main Results:

    • No significant difference in bond strength among the four agents at seven days.
    • Gluma showed significantly less leakage than other agents at seven days.
    • At 90 days, Tenure's bond strength decreased significantly.
    • Gluma and Scotchbond 2 exhibited less leakage than Scotchbond and Tenure at 90 days.
    • An inverse correlation (r² = .5460) was found between bond strength and marginal leakage.

    Conclusions:

    • Gluma offers superior marginal sealing in Class 5 erosion lesions compared to the other tested agents.
    • Long-term bond strength can vary significantly between different bonding systems.
    • Reduced bond strength is associated with increased marginal leakage in Class 5 restorations.