Department of Prosthodontics, SRM Dental College, Chennai, Tamil Nadu, India.
J Prosthodont. 2024 Jun;33(5):490-496. doi: 10.1111/jopr.13744. Epub 2023 Aug 28.
To compare the shear bond strength between polyetheretherketone (PEEK) and heat activated polymethylmethacrylate (PMMA) resin after laser treatment.
A total of 128 PEEK discs were fabricated (10 mm diameter and 2 mm thickness) and allocated into two groups. Group 1 was subjected to surface treatment followed by thermal cycling for 5000 cycles and group 2 was subjected to surface treatment followed by thermal cycling for 10,000 cycles. Each group was further subdivided into four subgroups (n = 16) which were: no surface treatment; primer treatment; acid etching; and laser surface treatment. PEEK was then bonded with PMMA resin using the conventional flasking technique. The shear bond strength was evaluated using a universal testing machine with a crosshead speed of 1 mm/min. Statistical analysis was done using one-way ANOVA for comparing within groups, followed by Tukey HSD test. Student's T-test was done to evaluate between the two groups.
In group 1, the highest shear bond strength was exhibited by the laser group (19.08 ± 0.16 MPa) followed by the acid etch group (14.84 ± 0.23 MPa), and the primer group (6.43 ± 0.20 MPa), while the least shear bond strength was observed in the no surface treatment group (4.98 ± 0.34 MPa) which was found to be significant (p < 0.05). In group 2, the highest shear bond strength was observed in the laser group (18.21 ± 0.23 MPa) followed by the acid etch group (13.77 ± 0.48 MPa), and the primer group (6.04 ± 0.11 MPa), while the least shear bond strength was observed in no surface treatment group (4.35 ± 0.21 MPa) which was found to be significant (p < 0.05).
The shear bond strength between PEEK and PMMA resin was highest for specimens that were surface treated with laser and followed by specimens treated with acid etching, primer application, and without surface treatment, respectively. Increasing thermal cycling from 5000 cycles to 10,000 cycles also reduced the bond strength.
比较激光处理后聚醚醚酮（PEEK）和热激活聚甲基丙烯酸甲酯（PMMA）树脂之间的剪切结合强度。
共制备了 128 个 PEEK 圆盘（直径 10mm，厚度 2mm），并将其分为两组。第 1 组进行表面处理，然后进行 5000 次热循环，第 2 组进行表面处理，然后进行 10000 次热循环。每组进一步分为四个亚组（n = 16），分别为：无表面处理；底漆处理；酸蚀；和激光表面处理。然后使用常规的铸模技术将 PEEK 与 PMMA 树脂粘结。使用万能试验机以 1mm/min 的十字头速度评估剪切结合强度。使用单向方差分析比较组内差异，然后使用 Tukey HSD 检验。使用学生 T 检验评估两组之间的差异。
在第 1 组中，激光组的剪切结合强度最高（19.08 ± 0.16 MPa），其次是酸蚀组（14.84 ± 0.23 MPa）和底漆组（6.43 ± 0.20 MPa），而无表面处理组的剪切结合强度最低（4.98 ± 0.34 MPa），差异具有统计学意义（p < 0.05）。在第 2 组中，激光组的剪切结合强度最高（18.21 ± 0.23 MPa），其次是酸蚀组（13.77 ± 0.48 MPa）和底漆组（6.04 ± 0.11 MPa），而无表面处理组的剪切结合强度最低（4.35 ± 0.21 MPa），差异具有统计学意义（p < 0.05）。
经激光表面处理后的 PEEK 与 PMMA 树脂之间的剪切结合强度最高，其次是经酸蚀处理、底漆处理和未经表面处理的试件，分别。将热循环从 5000 次增加到 10000 次也降低了粘结强度。
