Influence of silver nanoparticle solution on the mechanical properties of resin cements and intrarradicular dentin

Autor(es)

Umeda Suzuki, Thais Yumi ^[1] ; Gallego, Juno ^[2] ; Assuncao, Wirley Goncalves ^[3] ; Fraga Briso, Andre Luiz ^[4] ; dos Santos, Paulo Henrique ^[3]

Afiliação do(s) autor(es)

^[1] Fed Univ Minas Gerais UFMG, Fac Dent, Dept Restorat Dent, Belo Horizonte, MG - Brazil

^[2] Sao Paulo State Univ, Engn Fac Ilha Solteira, Dept Mech Engn, Ilha Solteira, SP - Brazil

^[3] Sao Paulo State Univ, Aracatuba Sch Dent, Dept Dent Mat & Prosthodont, Aracatuba, SP - Brazil

^[4] Sao Paulo State Univ, Aracatuba Sch Dent, Dept Restorat Dent, Aracatuba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 14, n. 6 JUN 26 2019.
• Citações Web of Science: 0

Resumo

This study evaluated the influence of silver nanoparticle on mechanical properties of the components of underlying dentin and resin cement in different regions of intraradicular dentin. Ninety extracted single-rooted human teeth were used in this study. After endodontic preparation, the teeth were divided into five groups, according to the irrigating agents: distilled water, 5.25% sodium hypochlorite, 25% polyacrylic acid, 2% chlorhexidine and 23 ppm silver nanoparticles dispersion. Then, the groups were divided in 3 subgroups (n = 6) according to the technique adopted for adhesive cementation: SUA group: Scotchbond Universal Adhesive + RelyX ARC; U200 group: RelyX U200; and MCE group: MaxCem Elite. The mechanical properties of hardness and elastic modulus were measured in resin cement and underlying dentin in ultra-micro hardness tester in different thirds of radicular dentin surface. Data were subjected to ANOVA and Fisher's test (p = 0.05). In the underlying dentin, in general, there was no statistically significant difference in different thirds of intraradicular dentin according to the different solutions used. In the resin cements, higher hardness values were found, in general, for the cervical third. When silver nanoparticle solution was used, higher mechanical properties were generally obtained for resin cement for the SBU and U200 groups, with little or no changes in mechanical properties for the dentin. Silver nanoparticle application is a viable option for irrigation the intraradicular dentin previously through the cementation process of glass fiber posts. The mechanical properties are influenced by irrigant solutions used and the depth intraradical analyzed area. (AU)

• Processo FAPESP: 12/12771-9 - Análise da interface adesiva entre pinos de fibra de vidro e dentina intrarradicular submetida à irrigação com diferentes agentes condicionantes
• Beneficiário: Thaís Yumi Umeda Suzuki
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/09721-0 - Personalização de pinos de fibra de vidro: estudo de propriedades mecânicas na interface restauradora adesiva
• Beneficiário: Paulo Henrique dos Santos
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/07530-9 - Influência do material cerâmico, cimento e tipo de substrato na qualidade estética da restauração e nas propriedades dos materiais resinosos
• Beneficiário: Paulo Henrique dos Santos
• Modalidade de apoio: Auxílio à Pesquisa - Regular