Do Irrigation Solutions Influence the Bond Interface Between Glass Fiber Posts and Dentin?

Autor(es)

Thaís Yumi Umeda Suzuki ; Mariana Almeida Pereira ^[2] ; João Eduardo Gomes-Filho ^[3] ; Linda Wang ^[4] ; Wirley Gonçalves Assunção ^[5] ; Paulo Henrique dos Santos ^[6]

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Dental Journal; v. 30, n. 2, p. 106-116, 2019-04-04.

Resumo

Abstract The aim of this study was to evaluate the push-out bond strength and interface permeability of glass-fiber posts in different regions of post space (cervical, middle, and apical) submitted to different irrigation solutions. Ninety single-rooted human teeth were submitted to endodontic treatment and divided into five groups, according to irrigation solutions: distilled water, 5.25% NaOCl, 25% polyacrylic acid, 2% chlorhexidine, and 23 ppm Ag NP dispersion. Each group was divided in 3 subgroups (n=6) according to cementation: SBU: Adper Scotchbond Universal + RelyX ARC; U200: RelyX U200; MCE: MaxCem Elite. Bond strength and sealing ability were measured in different areas of post space. The data was subjected to ANOVA and Fisher’s test (a=0,05). The silver nanoparticle solution showed highest bond strength values and lowest interface permeability in all thirds analyzed for SBU group. In the U200 group, the highest bond strength values were found for sodium hypochlorite solution, with significant difference between this solution and polyacrylic acid. A decrease in bond strength values in cervical to apical direction was found for MCE group and the same behavior were found for others groups. Regarding interface permeability, use of silver nanoparticle solution resulted in lower values in cervical and apical thirds. There was a decrease in bond strength in cervical to apical direction. Different irrigation solutions and intraradicular depth influenced the bond strength and interface permeability of adhesive material to dentin substrate. Silver nanoparticle solution can effectively be used as an irrigation agent in post space prior to fiber post cementation process. (AU)

• 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: 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