AI Article Synopsis
- The study investigates the challenges of bonding polyaryletherketone (PAEK) due to its hydrophobic surface and examines how handheld nonthermal plasma (HNP) can improve surface wettability and bonding performance with resin cement.
- Three types of PAEK specimens underwent different surface treatments, and the effects on wettability and shear bond strength (SBS) were analyzed through various aging tests.
- Results showed that HNP significantly enhanced PAEK's surface wettability and bond strength compared to other treatments, particularly benefiting ketone-enriched variants and maintaining durability even after aging.
Article Abstract
Background/purpose: Challenges exist regarding the bonding efficiency of polyaryletherketone (PAEK), a high-performance thermoplastic, attributed to its chemical inertness and hydrophobic surface, hindering effective bonding with resin-matrix cement. This research explored the impact of handheld nonthermal plasma (HNP), under varying operational parameters, on PAEK surface wettability and changes in bonding performance with cement.
Materials And Methods: Three types of disc-shaped PEAK specimens were prepared, with surface treatments categorized as grinding, airborne-particle abrasion (APB), and HNP. Surface wettability was analyzed using a contact angle analyzer (n = 10). Specimens were bonded with resin cement and subjected to artificial aging tests: distilled water bath (NA), thermocycling, and highly accelerated stress tests (n = 10 for each test). Shear bond strength (SBS) was measured, failure modes were analyzed, and statistical analyses were conducted.
Results: The HNP markedly improved PAEK surface wettability, achieving superhydrophilicity ( < 0.05). This effect intensified with extended operation times (30 or 60 s) and reduced elapsed times (<30 s). HNP-treated PAEK exhibited higher SBS than APB ( < 0.05) and maintained bonding durability after artificial aging, particularly in ketone-enriched variants. Failure analysis revealed predominantly adhesive failure under APB-NA treatment, mixture failures under HNP-NA treatment and postaging, but no cohesive failure.
Conclusion: The HNP device benefits dental settings by transforming the PAEK surface into superhydrophilic properties, thereby improving PAEK-cement bonding. It significantly enhances bond durability within 30 s of operation and after a 30 s elapsed period. It is noteworthy that ketone-enriched PAEK demonstrates markedly improved bonding performance.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11437272 | PMC |
| http://dx.doi.org/10.1016/j.jds.2024.05.029 | DOI Listing |
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