Effect of pre-coating with methyl methacrylate containing UV photoinitiators on the bond strength of poly(ether ether ketone)

This study investigates the effect of pre-coating with methyl methacrylate (MMA) containing ultraviolet (UV) photoinitiators on bond strength poly(ether ether ketone) (PEEK). Cylindrical PEEK blocks were irradiated 365 nm UV light for 5-20 s after they coated MMA 0.4-3.0 wt% photoinitiators: [1-phenyl-1,2-propanedione (PPD)], [diphenyl(2,4,6-trimethylbenzoyl) (TMDPO)], and [phenyl bis(2,4,6-trimethylbenzoyl) phosphine oxide (BTMPO)]. Pre-coated PEEKs bonded to a MMA-based adhesive resin. The shear was measured using universal testing machine. Secondary electron images captured observe failure surfaces. data analyzed one- two-way ANOVA Tukey's post hoc tests (p<0.05). highest (20.7±5.1 MPa) observed 0.4 BTMPO, 20 irradiation. Cohesive resin observed. use this led improved bonding performance PEEK.