Abstract

The aim of this study was to investigate the shear bond strength of composite resin to PEEK under hypobaric and hyperbaric pressure changes in different PEEK surface treatments. Ninety-six PEEK specimens were divided into three groups (n = 32). PEEK surfaces were sandblasted; acid-etched, and non-treated. Every group was then divided into three sub-groups (n = 10) for simulating hyperbaric pressure (2.8 atm-18 m under sea level), hypobaric pressure (0.34 atm-8,200 m high altitude), and the control group (atmospheric pressure). The specimens underwent pressure cycles for 20 days. Results were compared by using ANOVA followed by the post-hoc Tukey test. Variations in bond strength within each group were also evaluated by the Weibull modulus. Regardless of the environmental pressure changes, it was determined that the bonding strength and the Weibull modulus were the highest in the acid-etched PEEK. Bonding strengths were lower in all groups after exposure to environmental pressure changes, but this difference was not statistically different. Bond strengths between the PEEK material and composite resin can be affected by environmental pressure, while surface modification of the PEEK material plays an important role in bond strength. Dentists should take importance in choosing the appropriate material on patients who are exposed to different barometric changes, as fractures on restorations may be life-threatening.

摘要

本研究的目的是研究不同 PEEK 表面处理在低压和高压压力变化下复合树脂与 PEEK 的剪切粘合强度。九十六个 PEEK 标本被分为三组 ( n  = 32)。PEEK 表面经过喷砂处理；酸蚀，未经处理。然后将每组分为三个子组（n  = 10），用于模拟高压（海平面下 2.8 atm-18 m）、低压（0.34 atm-8,200 m 高海拔）和对照组（大气压） . 样本经历了 20 天的压力循环。通过使用 ANOVA 和post-hoc对结果进行比较图基测试。还通过威布尔模量评估了每组内粘合强度的变化。无论环境压力如何变化，都确定了酸蚀 PEEK 的粘合强度和威布尔模量最高。暴露于环境压力变化后，所有组的粘合强度均较低，但这种差异没有统计学差异。PEEK 材料和复合树脂之间的粘合强度会受到环境压力的影响，而 PEEK 材料的表面改性对粘合强度起着重要作用。牙医应该重视为暴露于不同气压变化的患者选择合适的材料，因为修复体上的骨折可能会危及生命。