Comparison of Microleakage of Orthodontic Brackets Bonded with Copper Oxide and Zinc Oxide Nanoparticles-Containing Composites Microleakage of Orthodontic Brackets
Regeneration, Reconstruction & Restoration (Triple R),
Vol. 10 (2025),
1 Dey 2025
https://doi.org/10.22037/rrr.v10.47417
Abstract
Background and objectives: Creating a white spot on the enamel around orthodontic attachments is not unexpected, and nearly half of orthodontic patients experience enamel demineralization. The aim of this study was to investigate the effect of nanoparticles on microleakage between composite and enamel.
Materials and methods: Orthodontic brackets were adhered by orthodontic adhesives in three groups on 48 extracted human premolar teeth. Three groups were studied: control and adhesive containing copper oxide and zinc oxide nanoparticles. Microleakage between adhesive-bracket and adhesive-tooth in the occlusal and gingival area of the study groups was determined by dye penetration method and statistically analyzed.
Results: Among 192 samples in three groups, microleakage was observed in 28.1% of the control group, 7.8% of zinc oxide group, and 10.9% of copper oxide group. Overall, microleakage occurred more frequently at the tooth-adhesive junction than at the bracket-adhesive junction, which was the only statistically significant factor in the GEE (Generalized Estimating Equations) analysis (P = 0.002). Differences in microleakage between occlusal and gingival margins, as well as between treatment groups, were not statistically significant.
Conclusion: Microleakage was not significantly affected by copper oxide and zinc oxide nanoparticles. No significant difference in microleakage was found between occlusal and gingival margin. Significantly greater microleakage was observed at the tooth-adhesive junction than at the bracket-adhesive junction.
- Microleakage
- Zinc Oxide Nanoparticles
- Copper Oxide Nanoparticles
- Orthodontic Adhesives
How to Cite
References
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