Influence of Surface Conditioning on Bonding Polyetherketoneketone to Dental Ceramic

Abstract

This study researched the effects of different surface conditioning techniques on the bond strength of polyetherketoneketone (PEKK) with lithium disilicate glass-ceramic material. A total of 105 test specimens were prepared from PEKK discs and randomly distributed into five experimental groups (n = 21) to which different surface conditioning techniques were applied. [Group A: sandblasting + SR Connect adhesive agent (SRC), Group B: dichloromethane (DCM) + SRC, Group C: methyl methacrylate (MMA) and DCM mixture + SRC, Group D: sandblasting + DCM + SRC, Group E (control): sandblasting + Pekk Bond adhesive agent (PB).] Surface roughness values of PEKK test specimens were measured. They were bonded to lithium disilicate glass-ceramic test specimens with resin cement. Half were subjected to thermomechanical aging. Shear bond strength measurements were made. Among the A, B, C, D, and E groups, a statistically significant difference was observed in terms of the surface roughness values (p < 0.001). Statistically significant differences were obtained among the thermomechanical aging groups (p < 0.001) and among the non-thermomechanical aging groups (p = 0.012) in terms of shear bond strength. Groups D and E demonstrated clinically acceptable bond strength values when bonding PEKK material with lithium disilicate glass-ceramic material.