Influence of handheld nonthermal plasma combined with chemical primer on the bonding properties of polyetheretherketone (PEEK) materials

S.-Y. Lai, Pin-I Huang, Chang Z.-X, Huei-Yu Huang, Tzu-Yu Peng

Research output: Contribution to conferencePosterpeer-review

Abstract

Purpose: Polyetheretherketone (PEEK) is a high-performance semi-crystalline thermoplastic polymer that can be reinforced with oxides and ceramic fillers to enhance its mechanical properties. However, the hydrophobic and inert surface of PEEK results in poor adhesion to other materials. This study aimed to improve surface affinity and bonding performance of PEEK by combining handheld nonthermal plasma (HNP) with a chemical primer. Methods: The study utilized PEEK specimens containing TiO2 (VK) and TiO2 with ceramic fillers (BP). Surfaces were prepared by grinding and sandblasting with alumina (110µm, 3 bar, 10 sec), then divided into 6 groups: SBP, with HC primer; NPT, HNP treatment; NPP, HNP treatment with HC primer, and three high-temperature accelerated aging groups (H-SBP, H-NPT, and H-NPP). Surface wettability, shear bond strength (SBS) to dual-cure and light-cure resin cements, and failure modes were evaluated. Eventually, statistical analysis was performed via one way analysis of variance (α= 0.05). Results: The results indicated that HNP significantly improved the surface wettability of both VK and BP. SBS tests revealed that BP exhibited higher SBS than VK. Among the treatments, NPP demonstrated the highest SBS, and after aging, the reduction in SBS was lower than that of other treatments. Furthermore, dual-cure resin cement showed better bonding durability and a higher incidence of mixed failure compared to light-cure cement. Conclusions: In conclusion, HNP significantly enhance the surface wettability of PEEK, promoting a uniform distribution of chemical primer and achieving the highest SBS. Furthermore, compared to light-cure resin cement, dual-cure resin cement provides optimal bonding durability.
Original languageEnglish
Publication statusPublished - Jan 25 2025
EventThe 7th International Congress of Dental Technology -
Duration: Jan 25 2025Jan 26 2025

Conference

ConferenceThe 7th International Congress of Dental Technology
Period1/25/251/26/25

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