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Enamel Anti-Demineralization Effect of Orthodontic Adhesive Containing Bioactive Glass and Graphene Oxide: An In-Vitro Study

1
Department of Orthodontics, Dental Research Institute, Pusan National University Dental Hospital, Yangsan 50612, Korea
2
School of Materials Science and Engineering, Pusan National University, Busan 46241, Korea
3
Department of Oral Anatomy, School of Dentistry, Pusan National University, Yangsan 50612, Korea
4
Department of Orthodontics, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516, USA
5
Department of Conservative Dentistry, School of Dentistry, Pusan National University, Yangsan 50612, Korea
6
Institute of Translational Dental Sciences, Pusan National University, Busan 46241, Korea
*
Authors to whom correspondence should be addressed.
These authors were equally contributed to this work.
Materials 2018, 11(9), 1728; https://doi.org/10.3390/ma11091728
Received: 21 August 2018 / Revised: 12 September 2018 / Accepted: 12 September 2018 / Published: 14 September 2018
White spot lesions (WSLs), a side effect of orthodontic treatment, can result in reversible and unaesthetic results. Graphene oxide (GO) with a bioactive glass (BAG) mixture ([email protected]) was added to Low-Viscosity Transbond XT (LV) in a ratio of 1, 3, and 5%. The composite’s characterization and its physical and biological properties were verified with scanning electron microscopy (SEM) and X-ray diffraction (XRD); its microhardness, shear bond strength (SBS), cell viability, and adhesive remnant index (ARI) were also assessed. Efficiency in reducing WSL was evaluated using antibacterial activity of S. mutans. Anti-demineralization was analyzed using a cycle of the acid-base solution. Adhesives with 3 wt.% or 5 wt.% of [email protected] showed significant increase in microhardness compared with LV. The sample and LV groups showed no significant differences in SBS or ARI. The cell viability test confirmed that none of the sample groups showed higher toxicity compared to the LV group. Antibacterial activity was higher in the 48-h group than in the 24 h group; the 48 h test showed that [email protected] had a high antibacterial effect, which was more pronounced in 5 wt.% of [email protected] Anti-demineralization effect was higher in the [email protected] than in the LV-group; the higher the [email protected] concentration, the higher the anti-demineralization effect. View Full-Text
Keywords: anti-demineralization; antibacterial effect; white spot lesion; graphene oxide; bioactive glass anti-demineralization; antibacterial effect; white spot lesion; graphene oxide; bioactive glass
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Lee, S.-M.; Yoo, K.-H.; Yoon, S.-Y.; Kim, I.-R.; Park, B.-S.; Son, W.-S.; Ko, C.-C.; Son, S.-A.; Kim, Y.-I. Enamel Anti-Demineralization Effect of Orthodontic Adhesive Containing Bioactive Glass and Graphene Oxide: An In-Vitro Study. Materials 2018, 11, 1728.

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