The Effect of Different Times of Plasma Treatment on the Bond Strength of Polyether-Ether-Ketone to Composite Resin Polieter-Eter-Ketonun Kompozit Rezine Bağlanma Dayanımına Farklı Sürelerdeki Plazmanın Etkisi

Objective: This study aimed to investigate the effect of plasma treatment of varying durations on the surface roughness of PEEK and its bond strength to veneering composite. Materials and Methods: 36 samples (7x7x2 mm in size) were prepared using a PEEK sheet, sanded with a silicon carbide sandpaper to standardise the surfaces sandblasted with Al2O3. They were divided into four groups in terms of surface treatments: (A)sandblasting (control), plasma treatment for 1 minute(B), 2 minutes(C), and 4 minutes(D). According to adhesive application shear bond strength (SBS) values of specimens were measured. The data were evaluated using the analysis of variance and the Tukey multiple comparison test, as well as the Pearson Correlation Coefficient between surface roughness and bond strength. Results: The analysis of variance showed no significant effect from varying durations of plasma treatment on roughness (p=0.182) and bond strength (p=0.345). The highest bond strength was found in the samples of Group D. The lowest value was found in the group of samples that underwent plasma treatment for 1 minute (Group B). Limitations of this study are that it is an in vitro study and cannot reflect the inside of the mouth. Conclusion: The highest and lowest roughness values were found in the control group (A) and the 2-minute treatment group (C), respectively. The highest and lowest bond strength values were found in the 4-minute treatment group (D) and the 1-minute treatment group (B), respectively. No correlation was found between surface roughness and bond strength.