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In vitro evaluation of stainless steel orthodontic wires coated with TiO2 and TiO2:Ag for their anti-adhesive and antibacterial efficacy against Streptococcus mutans in a sucrose-enriched environment

Bącela Justyna Joanna, Borak Beata, Sobieszczańska Beata, Walczuk Urszula, Detyna Jerzy, Sarul Michał

Materials Science Poland

2023

Vol. 41, No. 4

78--94

Antiadherent and antibacterial properties of TiO2-coated and TiO2:Ag-coated stainless steel orthodontic wires against S. mutans bacteria

Bącela Justyna Joanna, Kielan-Grabowska Zofia, Borak Beata, Sobieszczańska Beata, Walczuk Urszula, Kawala Beata, Zięty Anna, Detyna Jerzy, Sarul Michał

Acta of Bioengineering and Biomechanics

2022

Vol. 24, no. 3

107--118

Conventional orthodontic treatment with stainless steel orthodontic wires may be detrimental to oral health, as it contributes to demineralized lesions and increases adhesion and bacterial biofilm formation, which contributes to cavity development. An alternative that has been investigated to reduce the side effects of orthodontic treatment is the use of coating materials with antimicrobial nanoparticles. This study aims to evaluate the antiadherent and antibacterial properties of TiO2-coated and TiO2:Ag-coated stainless steel orthodontic wires against S. mutans bacteria. Methods: In the sol–gel method, TiO2:Ag thin films were deposited on stainless steel orthodontic wires. Coated archwires were analyzed for their antibacterial and antiadherent properties. The evaluation of Streptococcus mutans adhesion to the orthodontic wires’ surface was conducted according to the type of coating used, biofilm formation assay, and measurement of the pH of the bacterial community. Results: In the microbiological test, the TiO2:Ag coatings revealed a statistically significant difference in terms of microbial adhesion and biofilm formation by Streptococcus mutans. The TiO2:Ag coating on stainless steel wire increased pH levels in the saliva environment. Conclusions: It can be concluded that antimicrobial orthodontic wires coated with silver- TiO2 nanoparticles using the sol–gel thin film are a promising choice for improving orthodontic treatment.