Comparison of the physico-chemical impact of chlorhexidine and silver nanoparticles on orthodontic appliances made with laser and silver solder: An in vitro study

Costa, Érica Cristina Saturno Corrêa da; Neves, José Guilherme; Borges, Lincoln Pires Silva; Tsuzuki, Fernanda Midori; Correr, Américo Bortolazzo; Correr-Sobrinho, Lourenço; Costa, Ana Rosa

doi:10.1016/j.ortho.2022.100631

Cited by 3 publications

(2 citation statements)

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“…Alternatives include the use of Au-brazing alloys, which induce galvanic corrosion of the less-noble SS following the Ag case, or Ni-based brazing alloys, with no available data [98,319] but undesirable due to their toxicity. Laser welding, a more recent and preferable advanced manufacturing technique, allows joining without brazing alloys [95,192,322], with lower corrosion susceptibility [323], even though large gaps in the joints may be a disadvantage for Ti-based brackets [319]. corrosion susceptibility [323], even though large gaps in the joints may be a disadvantage for Ti-based brackets [319].…”

Section: Manufacturing Processesmentioning

confidence: 99%

“…Laser welding, a more recent and preferable advanced manufacturing technique, allows joining without brazing alloys [95,192,322], with lower corrosion susceptibility [323], even though large gaps in the joints may be a disadvantage for Ti-based brackets [319]. corrosion susceptibility [323], even though large gaps in the joints may be a disadvantage for Ti-based brackets [319]. Metal injection molding (MIM) is nowadays a popular manufacturing technique [11,319] to provide single-piece metallic orthodontic components with superior surface finishing in a cost-effective manner.…”

Section: Manufacturing Processesmentioning

confidence: 99%

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Corrosion of Fixed Orthodontic Appliances: Causes, Concerns, and Mitigation Strategies

Fróis,

Santos,

Louro

2023

Metals

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The orthodontic supply market is a prosperous billion-dollar industry, driven by an increasing demand for orthodontic appliances. The supremacy of metallic first-generation biomaterials is evident for manufacturing brackets, archwires, bands, and other components due to their well-recognized chemical inertness, spontaneous passivation, biocompatibility, and favorable mechanical properties combination. However, the oral cavity is the ultimate corrosion-promoting environment for any metallic material. In this work, the general picture of the intraoral degradation of fixed orthodontic appliances is first addressed, from the causes to the harmful effects and their oral clinical implications. Current mitigation strategies are also pointed out, including the alloys’ bulk composition adjustment combined with new and advanced manufacturing processes and/or their surface treatment or coating deposition. The versatile use of thin films and coatings stands out with different deposition technologies: Many in vivo and in vitro efforts have been devoted to oral aging, from monolithic to composite architectures and micro- to nano-scale materials, to meet the best and safest oral practice demands. Unfortunately, literature data suggest that even the existing commercially available protective coatings have drawbacks and are fallible. Further multidisciplinary research is still required to effectively mitigate the corrosion behavior of fixed orthodontic appliances.

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