Huang Huei-Yu, Lai Szu-Yu, Lee Fu-Ting, Wu Yang-Che, Feng Sheng-Wei, Nikawa Hiroki, Peng Tzu-Yu
School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.
Department of Dentistry, Taipei Medical University Shuang Ho Hospital, New Taipei City, Taiwan.
J Dent Sci. 2024 Oct;19(4):2057-2064. doi: 10.1016/j.jds.2024.05.029. Epub 2024 Jun 3.
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.
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.
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.
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.
背景/目的：聚芳醚酮（PAEK）作为一种高性能热塑性塑料，由于其化学惰性和疏水表面，在与树脂基水门汀的粘结效率方面存在挑战，这阻碍了其与树脂基水门汀的有效粘结。本研究探讨了手持非热等离子体（HNP）在不同操作参数下对PAEK表面润湿性以及与水门汀粘结性能变化的影响。
制备了三种类型的圆盘形PEAK试样，表面处理分为打磨、空气颗粒磨损（APB）和HNP。使用接触角分析仪分析表面润湿性（n = 10）。试样用树脂水门汀粘结，并进行人工老化试验：蒸馏水浴（NA）、热循环和高加速应力试验（每项试验n = 10）。测量剪切粘结强度（SBS），分析失效模式，并进行统计分析。
HNP显著改善了PAEK表面润湿性，实现了超亲水性（<0.05）。随着操作时间延长（30或60秒）和间隔时间缩短（<30秒），这种效果增强。经HNP处理的PAEK表现出比APB更高的SBS（<0.05），并且在人工老化后保持粘结耐久性，特别是在富含酮的变体中。失效分析显示，在APB-NA处理下主要为粘结性失效，在HNP-NA处理及老化后为混合性失效，但没有内聚性失效。
HNP装置通过将PAEK表面转变为超亲水特性，从而改善PAEK与水门汀的粘结，对牙科治疗有益。它在操作30秒内和30秒间隔期后显著提高了粘结耐久性。值得注意的是，富含酮的PAEK表现出明显改善的粘结性能。
