Effect of Chitosan Nanoparticles on Orthodontic Resin Composites: Antimicrobial Properties and Shear Bond Strength Effect of Chitosan Nanoparticles on Orthodontic Resin Composites
Regeneration, Reconstruction & Restoration (Triple R),
Vol. 10 (2025),
1 January 2025
https://doi.org/10.22037/rrr.v10.47166
Abstract
Background and objectives: The aim of this in-vitro study was to evaluate the antibacterial effect of adding different concentrations of chitosan nanoparticles (CS-NPs) into composite resin and their effect on shear bond strength (SBS) of orthodontic brackets.
Materials and methods: 60 composite resins disks containing 0%, 1%, 5%, and 10% w/w CS-NPs were prepared for disk agar diffusion test on days 3, 15 and 30. SBS test was conducted on 60 intact maxillary first premolars which were bonded with Composite resins containing 0%, 1%, 5%, and 10% w/w CS-NPs. The bracket/tooth SBS was measured by Universal testing machine. ANOVA, Tukey HSD post hoc test, Kruskal-Wallis and Mann-Whitney statistical tests were used to analyze the data with significance set as 0.05.
Results: All concentrations of CS-NPs showed antibacterial activity, creation and extension of inhibition zone. Composite resin containing 10% w/w CS-NPs had significant effect on extension of inhibition zone for S.mutans on day 3 (P-value: 0.007). Inhibition zone was decreased in long term which was not significant in 5% and 10%w/w CS-NPs composite. The highest mean shear bond strength was observed in the 0% w/w CS-NPs composite, while the lowest value was recorded in the 10% w/w CS-NPs group. Tukey HSD analysis showed that the 10% w/w CS-NPs group had significantly lower SBS than the Transbond XT control and 1% w/w CS-NPs groups.
Conclusion: On the basis of this study, adding all concentrations of CS-NPs to orthodontic composite enhances its antibacterial activity with minimal adverse effect on shear bond strength.
- Composite Resins
- Streptococcus mutans
- Chitosan
How to Cite
References
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