Long-term antimicrobial assessment of orthodontic brackets coated with nitrogen-doped titanium dioxide against Streptococcus mutans

Progress in Orthodontics
Parisa SalehiFatemeh Zare

Abstract

The antimicrobial properties of orthodontic wire and brackets with nitrogen-doped titanium dioxide (N-doped TiO2) coating have been studied in the past. However, the evaluation period had been short and limited to 30 days. The aim of the present study was to extend the evaluation period (up to 90 days) of assessing the long-term antimicrobial effects of stainless steel orthodontic brackets coated with nitrogen-doped titanium dioxide (N-doped TiO2). A total of 40 stainless steel pre-adjusted premolar brackets were equally divided into two groups; namely the control group (n=20, uncoated brackets) and the experimental group (n=20, coated brackets). RF magnetron sputtering was used to apply a thin film of TiO2 on the bracket surface. The crystalline structure of the thin film was assessed using X-ray diffraction. The antimicrobial property of the brackets against Streptococcus mutans (S. mutans) was evaluated using the survival rate by colony-forming units (CFU) at four intervals: 24 hours (T0), 30 days (T1), 60 days (T2), and 90 days (T3). 2-way ANOVA Repeated Measures was used to compare the effects between the groups over the time. There was no significant interaction between group and time (p = 0.568). The orthodontic brackets...Continue Reading

References

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Citations

Sep 5, 2019·International Journal of Environmental Research and Public Health·Charlotte E SheridanDaniela Fecht
Nov 2, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Muhammad Arslan AhmadRabia Javed
Aug 18, 2020·Progress in Orthodontics·Irania Jasso-RuizRyozo Yamaguchi
Sep 15, 2019·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Daniela EnescuLorenzo M Pastrana
Feb 3, 2021·Nanomaterials·Wojciech ZakrzewskiRafal J Wiglusz
Jan 9, 2022·Microscopy Research and Technique·Ramiro Estacia da SilveiraFlávia Lucisano Botelho do Amaral

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Methods Mentioned

BETA
X-ray

Software Mentioned

SPSS

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