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June 20, 2026Journal of Materials Chemistry B

A novel antibacterial dental resin composite material with quaternary ammonium salt modified mesoporous silica nanoparticles – an in vitro and in vivo animal study

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Authors

BLBixiao LinSWSiyu WuYZYu Zhang

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Overview

Randomized trial evaluates antibacterial efficacy and cytocompatibility of a new dental composite, suggesting improved caries resistance.

Key Points

  • This research aims to evaluate the antibacterial properties and cytocompatibility of a novel dental resin composite modified with quaternary ammonium salt.
  • In vitro assessment of antibacterial efficacy and cytocompatibility of 10 wt% QA-MSN composite.
  • In vivo evaluation of the composite in a rat model of secondary caries.
  • Measurements of biofilm formation, fibroblast proliferation, mechanical properties, and caries progression were conducted.
  • 10QM-Resin achieved a 99.7% antibacterial rate and reduced biofilm formation after 48 hours.
  • Relative proliferation rates of gingival fibroblasts and dental pulp stem cells were 99.8% and 99.5%, indicating strong cytocompatibility.
  • In the rat model, 10QM-Resin significantly reduced Keyes' scores and lesion depth, showing effectiveness in inhibiting caries progression.

Cite This Study

Lin et al. (2026) studied this question.

synapsesocial.com/papers/6a363326db0793dc1a5398f9https://doi.org/10.1039/d6tb00491a
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