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Related Experiment Videos

Improved filler-matrix coupling in resin composites.

Y Yoshida1, K Shirai, Y Nakayama

  • 1Department of Biomaterials, Okayama University Graduate Schools of Medicine and Dentistry, 2-5-1 Shikata-cho, Japan.

Journal of Dental Research
|July 5, 2002
PubMed
Summary

Chemical decontamination of dental composite fillers before silanization significantly enhances filler-matrix bonding. This improved bonding leads to dental composites with superior physico-mechanical properties resistant to degradation.

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Dental Materials

Background:

  • Ineffective silane coupling in dental composites causes degradation.
  • Improved filler-matrix bonding is crucial for composite durability.

Purpose of the Study:

  • To evaluate chemical decontamination's effect on filler-matrix bonding.
  • To assess the impact on dental composite physico-mechanical properties.

Main Methods:

  • X-ray photoelectron spectroscopy (XPS) analyzed filler-matrix coupling.
  • Silica filler decontamination involved boiling in sodium peroxodisulfate and acetone rinsing.
  • Experimental composites were fabricated and tested.

Main Results:

  • Siloxane bridge (Si-O-Si) formation was key for filler-matrix coupling.

Related Experiment Videos

  • Pre-silanization decontamination optimized silane bonding to silica.
  • Composites showed improved diametral tensile strength resistant to thermocycling.

    • Conclusions:

    • Chemical decontamination enhances silane coupling efficiency.
    • Improved bonding leads to more durable dental composites.
    • This method offers a strategy to mitigate in vivo degradation.