New bactericide orthodonthic archwire: NiTi with silver nanoparticles
Author
Gil Mur, Francisco Javier
Clusellas, Núria
Fernandez-Bozal, Javier
Artés Ribas, Montserrat
Publication date
2020ISSN
2075-4701
Abstract
A potential new bactericide treatment for NiTi orthodontic archwires based in the electrodeposition of silver nanoparticles on the surface was studied. Twenty-five archwires were treated by electrodeposition, obtaining nanoparticles of silver embedded on the archwire surface. These were evaluated in order to investigate the possible changes on the superelastic characteristics (critical temperatures and stresses), the nickel ion release, and the bacteria culture behavior. The chemical composition was analyzed by Energy Dispersive X-Ray Spectroscopy-microanalysis; the singular temperatures of the martensitic transformation were obtained by a flow calorimeter. Induced martensitic transformation stresses were obtained by mechanical testing apparatus. Nickel ion release was analyzed by inductively coupled plasma-mass spectrometry (ICP-MS) equipment using artificial saliva solution at 37 °C. Bacterial tests were studied with the most used oral bacterial strains: Streptococcus sanguinis and Lactobacillus salivarius. NiTi samples were immersed in bacterial suspensions for 2 h at 37 °C. Adhered bacteria were separated and seeded on agar plates: Tood-Hewitt (TH) and Man-Rogosa-Sharpe (MRS) for S. sanguinis and for L.salivarius, respectively. These were then incubated at 37 °C for 1 day and the colonies were analyzed. The results showed that the transformation temperatures and the critical stresses have not statistically significant differences. Likewise, nickel ion release at different immersion times in saliva at 37 °C does not present changes between the original and treated with silver nanoparticles archwires. Bacteria culture results showed that the reduction of the bacteria due to the presence to the nanoparticles of silver is higher than 90%. Consequently, the new treatment with nanoparticles of silver could be a good candidate as bactericidic orthodontic archwire.
Document Type
Article
Document version
Accepted version
Language
English
Subject (CDU)
616.3 - Pathology of the digestive system. Complaints of the alimentary canal
Keywords
Ortodòncia
Bacteris
Plata
Ortodoncia
Bacterias
Plata
Orthodontics
Bacteria
Silver
Pages
12
Publisher
MDPI
Collection
10; 6
Is part of
Metals
Citation
Gil Mur, Francisco Javier; Espinar-Escalona, Eduardo; Clusellas, Nuria [et al.]. New bactericide orthodonthic archwire: NiTi with silver nanoparticles. Metals, 2020, 10(6), p. 1-12. Disponible en: <https://www.mdpi.com/2075-4701/10/6/702>. Fecha de acceso: 20 jun. 2020. DOI: 10.3390/met10060702
Grant agreement number
info:eu-repo/grantAgreement/MICINN/RTI2018-098075-B-C22
This item appears in the following Collection(s)
- Odontologia [245]
Rights
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open accessarticle distributed under the terms and conditions of the Creative Commons Attribution(CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/