Yılmaz Savaş, TubaŞavaş, AldulhalukPişkin, Bülent2023-11-082023-11-082023Savaş, Abdulhaluk., Yılmaz Savaş, Tuba. & Piskin, Bulent. “Does the Duration of Acid Treat-ment Affect the Bond Strength Between Resin Cement and Zirconia?”. Acta Stomatolo-gica Cappadocia. 3;1 (June 2023): 18-25https://doi.org/10.54995/ASC.3.1.2https://hdl.handle.net/20.500.12695/2328Statement of the problem: The bonding between the resin cement and zirconia still needs to be improved and the effect of the experimental acid app-lication duration on the resin bond strength with zirconia is unknown. Objective: This study aimed to investigate the effect of different acid application times on the shear bond strength between zirconia and dual-cure resin cement. Materials & Methods: A total of 50 zirconia disks were prepared in 2 mm thickness and randomly divided into five treatment groups: control (no treatment was applied), 30 seconds HF:H2O:H2O2 acid application group, 60 seconds HF:H2O:H2O2 acid application group, 90 seconds HF:H2O:H2O2 acid application group, and 120 seconds HF:H2O:H2O2 acid application group. Then a dual-cure resin cement was applied over the 3 mm diameter and 3 mm thickness of the zirconia specimens. The specimens were immersed in distilled water and maintained at a temperature of 37°C for a duration of 24 hours. The shear bond strength tests were performed using a universal testing machine with a force of 1 mm/min until the fracture occurs, and the data were analyzed using one-way ANOVA and Tukey's post-hoc test. Results: The highest mean shear bond strength was found in the 90 se-conds acid application group, which was significantly higher than the control and 30 seconds acid application groups (P<0.05). However, the 60- and 120 se-conds acid application groups showed similar shear bond strength values with the control, 30- and 90 seconds acid application groups (P>0.05). Conclusions: The use of a 60-, 90- and 120 seconds acid application can improve the bond strength between zirconia and resin cement. However, cau-tion should be taken when using this acid due to its potential toxicity and ha-zards.eninfo:eu-repo/semantics/openAccessZirconiaResin CementShear Bond StrengthHydrofluoric AcidHydrogen PeroxideSurface TreatmentArticle311825