Bonding to Different PEEK Compositions: The Impact of Dental Light Curing Units

Abstract

This study investigated the impact of different light curing units (LCUs) for the polymerization of adhesive system visio.link (VL) on the tensile bond strength (TBS) of different PEEK compositions. For TBS measurements, 216 PEEK specimens with varying amounts of TiO2 (PEEK/0%, PEEK/20%, PEEK/>30%) were embedded, polished, air abraded (Al2O3, 50 µm, 0.4 MPa), conditioned using VL, and polymerized using either a halogen LCU (HAL-LCU) or a LED LCU (LED-LCU) for chairside or labside application, respectively. After thermocycling (5000×, 5/55 °C), TBS was measured, and fracture types were determined. Data was analyzed using a 2-way ANOVA followed by Tukey–HSD, Kruskal–Wallis H and Mann–Whitney U tests as well as a Chi2-test and a Ciba–Geigy table (p < 0.05). Globally, the light curing units, followed by PEEK composition, was shown to have the highest impact on TBS. The HAL-LCUs, compared to the LED-LCUs, resulted in a higher TBS for all PEEK compositions—without significant differences between chairside and labside units. Regarding the different PEEK compositions, PEEK/20%, compared to PEEK/0%, resulted in a higher TBS when both, HAL-LCUs or LED-LCUs were used for labside application. In comparison with PEEK/>30%, PEEK/20% resulted in a higher TBS after using HAL-LCU for labside application. No significant differences were found between PEEK/0% and PEEK/>30%. HAL-LCU with PEEK/20% for labside application showed a higher TBS than HAL-LCU with PEEK/20% for chairside application, whereas LED-LCU with PEEK/>30% for chairside application showed a higher TBS than LED-LCU with PEEK/>30% for labside application.

Review on Development and Dental Applications of Polyetheretherketone-Based Biomaterials and Restorations

“…TiO 2 filler particles had an effect on the bond strength of PEEK, as reported by Lümkemann et al [ 127 ] and Schwitalla et al [ 123 ]. In addition, Rikitoku et al [ 128 ] evaluated the effect of SiO 2 in PEEK on the bonding strength between PEEK and resin cement.…”

The Effect of Various Plasma Gases on the Shear Bond Strength between Unfilled Polyetheretherketone (PEEK) and Veneering Composite Following Artificial Aging

“…Glass-filled PEEK, silica-filled PEEK, and carbon-filled PEEK gained less attention from researchers [11,26,27]. Various fillers and their percentages were reported to affect the bonding behavior to different veneering composites [13,14,28]. Unfilled PEEK was therefore used in this study to investigate the influence of surface treatment techniques on the bonding strength solely [13,14,26].…”

Suitability of the new Aryl-Ketone-Polymer indicated for removable partial dentures: Analysis of elastic properties and bond strength to denture resin

“…On the adhesion properties, the present investigation also focused on the bond strength between the UAKP and denture resin, which has historically been challenging due to the characteristic inert surface character of highperformance thermoplastics 22) . Even though current scientific evidence has thoroughly dealt with bonding characteristics between high-performance thermoplastics to polymer-based materials like veneering resins [23][24][25][26][27][28] and resin composite [29][30][31][32][33][34][35][36][37][38][39][40][41][42] , data on the bonding behavior to denture resin is truly scarce 37) . The most important findings are that a surface pretreatment combined with appropriate specific conditioning step is necessary to realize a sufficient bonding to dental composites.…”