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Related Experiment Video

Updated: Jun 23, 2025

Attaching Biological Probes to Silica Optical Biosensors Using Silane Coupling Agents
09:35

Attaching Biological Probes to Silica Optical Biosensors Using Silane Coupling Agents

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Ionic Liquid-Based Silane for SiO2 Nanoparticles: A Versatile Coupling Agent for Dental Resins.

Isadora Martini Garcia1,2, Virgínia Serra de Souza3, Abdulrahman A Balhaddad4

  • 1Division of Cariology and Operative Dentistry, Department of Comprehensive Dentistry, University of Maryland School of Dentistry, Baltimore, Maryland 21201, United States.

ACS Applied Materials & Interfaces
|June 24, 2024
PubMed
Summary

Researchers developed a new ionic liquid-based silane to enhance dental resins, improving resistance to acid attacks and bacterial degradation. This novel material shows promise for creating more durable and antimicrobial dental restorations.

Keywords:
composite dental resinionic liquidsmechanical testsmicrobial sensitivity testsnanocompositespolymerizationsilanes

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Last Updated: Jun 23, 2025

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Dental Materials

Background:

  • Dental resins currently face limitations in intraoral longevity due to susceptibility to acidic degradation and enzymatic breakdown.
  • Streptococcus mutans, a primary cause of dental caries, poses a significant challenge to the durability of existing dental restorative materials.

Purpose of the Study:

  • To synthesize an ionic liquid-based antibiofilm silane effective against Streptococcus mutans.
  • To incorporate this silane into dental resins to create materials with enhanced resistance to biofilm formation and degradation.
  • To evaluate the physical, mechanical, and biological properties of the modified dental resins.

Main Methods:

  • Synthesis of an ionic liquid-based silane confirmed by FTIR, UV-vis, and NMR spectroscopy.
  • Incorporation of the silane into dental resins, followed by characterization of degree of conversion, softening in solvent, flexural strength, and ultimate tensile strength.
  • Evaluation of antibiofilm activity against Streptococcus mutans using viability assays and fluorescence microscopy, alongside cytotoxicity testing.

Main Results:

  • The synthesized silane was successfully incorporated into dental resins, maintaining a comparable degree of conversion to commercial composites.
  • Addition of at least 2.5 wt% silane reduced softening in solvent, while at least 5 wt% significantly reduced Streptococcus mutans viability with increased bacterial membrane damage.
  • The modified resins demonstrated good biocompatibility and stability after six months of water storage, with no significant changes in mechanical properties over time.

Conclusions:

  • The developed ionic liquid-based silane effectively enhances dental resins, providing improved resistance to solvent softening and significant antibiofilm properties against Streptococcus mutans.
  • These novel dental materials exhibit biocompatibility and long-term stability, making them suitable for various dental applications.
  • The potential exists for further development into antimicrobial polymeric layers for diverse surfaces, advancing novel biomaterials with enhanced therapeutic characteristics.