Department of Restorative Dentistry, Division of Operative Dentistry College of Dentistry, King Saud University, Saudi Arabia.
Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
Photodiagnosis Photodyn Ther. 2022 Jun;38:102765. doi: 10.1016/j.pdpdt.2022.102765. Epub 2022 Feb 16.
To evaluate and compare the influence of contemporary surface treatments of air abrasions, sulfuric acid, and Photodynamic therapy (PDT) on the adhesive bonding and surface roughness of Poly-ether-ether-ketone (PEEK) bonded to resin composite.
One hundred and fifty PEEK (disk-shaped) specimens of 10 mm diameter and 2 mm thickness were prepared. Specimens were subjected to the following surface treatments, Control (no treatment), PDT, air abrasion using Alumina particles (110 μm) (AA-AP), Sulfuric acid (SA), and air abrasion using diamond particles (10-20 μm) AA-DP. Surface roughness (Ra) of treated samples were evaluated using surface profilometer. Universal testing machine was used to evaluate shear bond strength after composite resin build-up. Stereomicroscope was utilized for failure analysis of de-bonded samples of all five groups. Statistical analysis was performed utilizing one-way analysis of variance (ANOVA) to measure means and standard deviations of SBS among studied groups and the means of SBS were paralleled by Tukey multiple comparison tests (p > 0.05).
The highest SBS was observed by 98% SA (19.25 ± 0.68 MPa). While specimen treated with PDT (11.69 ± 0.12 MPa) showed the lowest SBS. PEEK surface, treated with PDT and AA-DP demonstrated comparable SBS (p > 0.05). PEEK when pretreated with 98% SA (2.658 ± 0.658 μm) exhibited a significantly higher Ra value as compared to other surface-treated groups (p < 0.05).
PEEK surface treated with SA showed the highest SBS and surface roughness compared to other groups. Surface roughness of PEEK treated with PDT, AA-AP, and AA-DP demonstrated no difference in Ra. PEEK surface treatment technique should be further investigated to develop reliable adhesive resin bonding.
评估和比较现代喷砂、硫酸和光动力疗法（PDT）对聚醚醚酮（PEEK）与树脂复合材料粘结和表面粗糙度的影响。
制备了 150 个直径为 10mm、厚度为 2mm 的 PEEK（圆盘状）试件。试件分别进行以下表面处理：对照（不处理）、PDT、氧化铝颗粒喷砂（110μm）（AA-AP）、硫酸（SA）和金刚石颗粒喷砂（10-20μm）（AA-DP）。使用表面轮廓仪评估处理后样品的表面粗糙度（Ra）。万能试验机用于评估复合树脂堆积后的剪切粘结强度。立体显微镜用于分析所有五组试件的粘结破坏情况。采用单因素方差分析（ANOVA）对各组间 SBS 的平均值和标准差进行统计学分析，并采用 Tukey 多重比较检验对 SBS 的平均值进行平行比较（p＞0.05）。
98%SA（19.25±0.68MPa）处理的试件具有最高的 SBS，而 PDT 处理（11.69±0.12MPa）的试件 SBS 最低。PDT 和 AA-DP 处理的 PEEK 表面具有可比的 SBS（p＞0.05）。98%SA 预处理的 PEEK（2.658±0.658μm）的 Ra 值显著高于其他表面处理组（p＜0.05）。
与其他组相比，SA 处理的 PEEK 表面具有最高的 SBS 和表面粗糙度。PDT、AA-AP 和 AA-DP 处理的 PEEK 表面的 Ra 值无差异。需要进一步研究 PEEK 表面处理技术，以开发可靠的粘结树脂。
