Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
In Vitro Assessments of Antimicrobial Potential and Cytotoxicity Activity of an Orthodontic Adhesive Doped With Nano-Graphene Oxide; [In Vitro Оценка Антимикробного Потенциала И Цитотоксической Активности Ортодонтического Адгезива, Легированного Нанооксидом Графена] Publisher Pubmed



Pourhajibagher M1 ; Ghorbanzadeh R2 ; Salehivaziri A2 ; Bahador A3, 4
Authors
Show Affiliations
Authors Affiliations
  1. 1. Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Orthodontics, Shahed University, Tehran, Iran
  3. 3. Oral Microbiology Laboratory, Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Clinical Laboratory Sciences, Bio Health Lab, Tehran, Iran

Source: Folia Medica Published:2022


Abstract

Introduction: Formation of white spots and initial carious lesions are the most important complications of fixed orthodontic treatment. Preparation of orthodontic adhesives containing antimicrobial agents might be a practical solution for the prevention of the mentioned defects. Aim: The current study aims to assess the antimicrobial and cytotoxicity effects of a conventional orthodontic adhesive containing different concentrations of nano-graphene oxide (N-GO). Materials and methods: 50 Transbond XT orthodontic adhesive discs containing 0, 1, 2, 5, and 10% N-GO were prepared and sterilized by 25 kGy Gamma irradiation. After determination of cytotoxicity potential of modified orthodontic adhesive on human gingival fibroblast (HGF) cells, antimicrobial effects of the modified orthodontic adhesive against Streptococcus mutans in the preformed cariogenic biofilms was investigated using eluted components from composite discs by comparing the viable counts of bacteria after 3, 7, 15, 30, and 60 days of the aging process in artificial saliva. Results: Based on the results, there was no cytotoxic effects of modified orthodontic adhesive on HGF cells (p>0.05). Transbond XT orthodontic adhesive containing 5 and 10 wt% N-GO reduced considerably the mean total viable counts of S. mutans up to 30 days (p<0.05). However, at 60 days, only 10 wt% N-GO could statistically decrease the colony-forming unit (CFU)/mL of test microorganisms. Antimicrobial activity of eluted components from modified orthodontic adhesive discs against S. mutans was in line with the concentration of N-GO. Conclusions: At 5% and 10% concentrations, a modified orthodontic adhesive containing N-GO has a significant antimicrobial activity against S. mutans in cariogenic biofilms. © Folia Medica 2022.
Experts (# of related papers)