Effect of erosive challenge with HCl on restorative materials.

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.