Multitechnique characterization of conventional and experimental Ag-based brazing alloys for orthodontic applications

Ntasi, Argyro; Jabbari, Youssef S. Al; Silikas, Nick; Eliades, Theodore; Zinelis, Spiros

doi:10.1016/j.dental.2018.01.003

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…Orthodontic brackets are used in comprehensive orthodontic treatment during which they are semi-permanently bonded to teeth as part of a fixed appliance system to correct multiple malocclusion features simultaneously. They are typically made from alloys of metallic materials such as cobalt-chromium, stainless steel, and titanium [1]. Of these, stainless steel alloys are popular due to their low cost, ideal biomechanical behaviour, corrosion resistance, and bio-affinity [2].…”

Section: Introductionmentioning

confidence: 99%

Bioactive Plasma Coatings on Orthodontic Brackets: In Vitro Metal Ion Release and Cytotoxicity

et al. 2021

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The metal ion release characteristics and biocompatibility of meta-based materials are key factors that influence their use in orthodontics. Although stainless steel-based alloys have gained much interest and use due to their mechanical properties and cost, they are prone to localised attack after prolonged exposure to the hostile oral environment. Metal ions may induce cellular toxicity at high dosages. To circumvent these issues, orthodontic brackets were coated with a functional nano-thin layer of plasma polymer and further immobilised with enantiomers of tryptophan. Analysis of the physicochemical properties confirmed the presence of functional coatings on the surface of the brackets. The quantification of metal ion release using mass spectrometry proved that plasma functionalisation could minimise metal ion release from orthodontic brackets. Furthermore, the biocompatibility of the brackets has been improved after functionalisation. These findings demonstrate that plasma polymer facilitated surface functionalisation of orthodontic brackets is a promising approach to reducing metal toxicity without impacting their bulk properties.

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Section: Introductionmentioning

confidence: 99%