Effect of erosive challenge with HCl on restorative materials

Author(s)

Willers, Amanda Endres ; Branco, Thais Bulzoni ; Sahadi, Beatriz Ometto ; Faraoni, Juliana Jendiroba ; Palma Dibb, Regina Guenka ; Giannini, Marcelo

• Document type: Journal article
• Source: CLINICAL ORAL INVESTIGATIONS; v. N/A, p. 15-pg., 2022-04-20.

Abstract

Objective Investigate the effect of erosive challenge with hydrochloric acid (HCl) on the surface of five different restorative materials. Material and methods Ten plates of five restorative materials (Admira Fusion, Activa BioActive-Restorative, Charisma, Equia Forte HT Fil/EF, Filtek Universal Restorative/FU) were obtained. Half of the plate surfaces was covered with an adhesive tape, creating a control area, and the other side was submitted to the HCl (0.06 M HCl; pH 1.2; at 37 degrees C; for 30 h). Plates with control and HCl-treated areas were analyzed regarding the surface roughness (Sa), roughness profile (Rv), surface loss (SL), microhardness (MI), and gloss (GL) (n = 10). Surface morphology was analyzed by SEM and chemical elements were identified by EDX (n = 5). Data were evaluated by ANOVA and Tukey's test (alpha = 0.05). Results Most materials were not affected by HCl. FU showed the lowest Sa and Rv, and the highest GL after HCl. On the other hand, EF presented the highest Sa, Rv, and SL, and the lowest GL. The MI of materials was not changed after HCl. Topographical and chemical alterations were observed after HCl only for EF. Conclusions The composites showed minor surface changes after HCl, which was not observed for the glass ionomer cement (EF). FU presented the best performance regarding the parameters evaluated. (AU)

• FAPESP's process: 19/13487-1 - Effect of erosive challenge on three resins composed of different monomer compositions and load content
• Grantee: Thaís Bulzoni Branco
• Support Opportunities: Scholarships in Brazil - Scientific Initiation