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Article

Antibacterial and Remineralizing Fillers in Experimental Orthodontic Adhesives

1
Dental Materials Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre 90035-003, Brazil
2
Department of Therapеutic Dentistry Sechenov University, Mozhaisky Val, 11 119435 Moscow, Russia
3
BioMat-Dental Biomaterials Laboratory, Faculty of Health Sciences, University CEU-Cardenal Herrera, 46115 Valencia, Spain
4
Dental Materials Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre 90035-003, Brazil
*
Author to whom correspondence should be addressed.
Materials 2019, 12(4), 652; https://doi.org/10.3390/ma12040652
Received: 4 February 2019 / Revised: 14 February 2019 / Accepted: 18 February 2019 / Published: 21 February 2019
(This article belongs to the Special Issue Orthodontic Materials and Adhesive Interfaces)
Orthodontic adhesives with antimicrobial and remineralizing properties may be an alternative to control white spot lesions around brackets. The aim of this study is to develop an experimental orthodontic adhesive containing boron nitride nanotubes (BNNT) and alkyl trimethyl ammonium bromide (ATAB). Methacrylate (BisGMA and TEGDMA) monomers were used to formulate the adhesives. Four experimental groups were produced with the addition of 0.1 wt.% BNNT (GBNNT); 0.1 wt.% ATAB (GATAB); and 0.2 wt.% BNNT with ATAB (GBNNT/ATAB); in the control group, no fillers were added (GCtrl). The degree of conversion, cytotoxicity, softening in solvent, contact angle and free surface energy, antibacterial activity, shear bond strength, and mineral deposition were evaluated. Adhesives achieved degree of conversion higher than 50% and cell viability higher than 90%. GBNNT and GATAB adhesives exhibited reduced softening in solvent. Mean free surface energy was decreased in the GBNNT adhesive. Significant reduction in bacterial growth was observed in the GBNNT/ATAB. No statistical difference was found for shear bond strength. Mineral deposition was found in GBNNT, GATAB, and GBNNT/ATAB groups after 14 and 28 days. The addition of 0.2% BNNT/ATAB to an experimental orthodontic adhesive inhibited bacterial growth and induced mineral deposition without affecting the properties of the material. View Full-Text
Keywords: adhesive; orthodontic; mineral deposition; anti-bacterial agents; quaternary ammonium compounds; boron nitride adhesive; orthodontic; mineral deposition; anti-bacterial agents; quaternary ammonium compounds; boron nitride
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MDPI and ACS Style

Ferreira, C.J.; Leitune, V.C.B.; Balbinot, G.d.S.; Degrazia, F.W.; Arakelyan, M.; Sauro, S.; Mezzomo Collares, F. Antibacterial and Remineralizing Fillers in Experimental Orthodontic Adhesives. Materials 2019, 12, 652. https://doi.org/10.3390/ma12040652

AMA Style

Ferreira CJ, Leitune VCB, Balbinot GdS, Degrazia FW, Arakelyan M, Sauro S, Mezzomo Collares F. Antibacterial and Remineralizing Fillers in Experimental Orthodontic Adhesives. Materials. 2019; 12(4):652. https://doi.org/10.3390/ma12040652

Chicago/Turabian Style

Ferreira, Carolina J., Vicente C.B. Leitune, Gabriela d.S. Balbinot, Felipe W. Degrazia, Marianna Arakelyan, Salvatore Sauro, and Fabricio Mezzomo Collares. 2019. "Antibacterial and Remineralizing Fillers in Experimental Orthodontic Adhesives" Materials 12, no. 4: 652. https://doi.org/10.3390/ma12040652

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