Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10316/100794
Título: | Salivary pH Effect on Orthodontic Appliances: In Vitro Study of the SS/DLC System | Autor: | Frois, António Evaristo, Manuel Santos, Ana Cristina Louro, Cristina Santos |
Palavras-chave: | DLC coatings; stainless steel; corrosion; orthodontics | Data: | 2021 | Projeto: | FCT PhD Grant SFRH/BD/143905/2019 UIDB/00285/2020 |
Título da revista, periódico, livro ou evento: | Coatings | Volume: | 11 | Número: | 11 | Resumo: | Stainless steels (SS) are the most-used alloys for manufacturing fixed orthodontic appliances due to their attractive set of mechanical properties, biocompatibility, and high corrosion resistance. Nevertheless, during regular orthodontic treatments–taking at least around 2 years–the intraoral environment inevitably degrades these bioalloys, releasing metallic ions into the oral cavity. In the first part of this in vitro study, the corrosion resistance of commercial SS appliances (brackets, tubes, and bands) was evaluated in Fusayama-Meyer artificial saliva at pH values of 2.3 and 6.8 over the course of 30 days. As expected, the results corroborated that salivary pH highly influences corrosion behaviour. Released Ni, Cr, and Fe were within dietary intake values. In the second part, a novel approach for oral corrosion prevention based on the chemical inertness of DLC materials is presented. SS surfaces were functionalized with biocompatible a-C:H-sputtered coatings and submitted to the same experimental conditions. The anticorrosion ability of this system was demonstrated, preventing the pitting corrosion that occurred on the SS substrates. Despite the galvanic coupling effect due to the presence of the Cr-based interlayer, this study enhanced the potential use of the reactive sputter-deposited a-C:H coatings in orthodontics. | URI: | https://hdl.handle.net/10316/100794 | ISSN: | 2079-6412 | DOI: | 10.3390/coatings11111302 | Direitos: | openAccess |
Aparece nas coleções: | I&D CEMMPRE - Artigos em Revistas Internacionais I&D CIBB - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Salivary-ph-effect-on-orthodontic-appliances-In-vitro-study-of-the-SSDLC-systemCoatings.pdf | 5.86 MB | Adobe PDF | Ver/Abrir |
Citações SCOPUSTM
6
Visto em 15/abr/2024
Citações WEB OF SCIENCETM
5
Visto em 2/abr/2024
Visualizações de página
63
Visto em 23/abr/2024
Downloads
117
Visto em 23/abr/2024
Google ScholarTM
Verificar
Altmetric
Altmetric
Este registo está protegido por Licença Creative Commons