不同表面处理方式对聚醚醚酮与复合树脂粘接性能的影响

目的研究不同存储条件下6种通用型粘接剂及喷砂条件对聚醚醚酮（PEEK）与复合树脂之间粘接强度和耐久性的影响。 方法将PEEK材料切割成12个边长为2 cm的正方体试件。对其中6个试件进行氧化铝喷砂处理。6种通用型粘接剂为：Tetric N-Bond Universal（TNU）、Single Bond Universal（SBU）、DX.BOND UNI（DXB）、Selective Etch Bond（SEB）、Gluma Bond Universal（GBU）、Prime & Bond Universal（PBU）。实验分为7组，每组包含4个喷砂面和4个未喷砂面。7种表面处理方法分别为：不使用粘接剂（对照组）和6种通用型粘接剂（实验组：TNU组、SBU组、DXB组、SEB组、GBU组、PBU组）。经表面处理后，将流动复合树脂F00注入透明模具并将其无压力置于试件表面后进行光照固化。试件分别在37 ℃恒温水浴24 h或冷热循环3000次后进行剪切粘接强度测试。使用松风EyeSpecial C-Ⅳ口腔专用相机微距模式进行断面拍照并进行断裂模式分析。采用SPSS 23.0软件Three-Way ANOVA（冷热循环、粘接剂与喷砂）与Tukey方法对各组数据进行统计分析（α = 0.05）。 结果24 h水浴条件下，TNU组分别获得不喷砂组（9.92 ± 1.19）MPa与喷砂组（9.97 ± 1.03）MPa最高粘接强度；冷热循环3000次后PBU组分别获得不喷砂组（6.75 ± 0.99）MPa与喷砂组（7.22 ± 1.30）MPa最高粘接强度。三因素分析结果显示：冷热循环（F = 3 045.429，P<0.001）、粘接剂（F = 361.165，P<0.001）与喷砂（F = 80.050，P<0.001）可显著影响粘接强度；冷热循环与粘接剂（F = 155.724，P<0.001）、粘接剂与喷砂（F = 3.535，P = 0.002）、冷热循环与喷砂（F = 9.184，P = 0.003）两两因素间分别具有交互作用；冷热循环、粘接剂与喷砂三因素间具有交互作用（F = 12.392，P<0.001）。 结论（1）喷砂有助于改善通用型粘接剂对复合树脂与PEEK 37 ℃恒温水浴24 h粘接强度；（2）复合树脂与PEEK粘接强度在冷热循环3000次后显著降低；（3）本实验中PBU组粘接耐久性优于其他粘接系统。

Effect of different surface treatments on the bonding performance between polyetheretherketone and composite resin

ObjectiveTo evaluate the effect of six universal adhesives and sandblasting on the bond strength and durability between polyetheretherketone (PEEK) and composite resin under different storage conditions. MethodsA PEEK disk was cut into twelve cube specimens with the side length of 2 cm. Six specimens were sandblasted with alumina. The six universal adhesives are: Tetric N-Bond Universal (TNU) , Single Bond Universal (SBU) , DX.BOND UNI (DXB) , Selective Etch Bond (SEB) , Gluma Bond Universal (GBU) and Prime & Bond Universal (PBU) . The experiment was divided into seven groups with four sandblasted surfaces and four unsandblasted surfaces in each group. Seven surface treatments were: no adhesive applied (control group) and six brands of universal adhesive (experimental groups: TNU group, SBU group, DXB group, SEB group, GBU group and PBU group) . After surface preparation, the flowable composite resin F00 was injected into a transparent mold on the specimen surface without pressure for light-curing. The shear bond strength (SBS) test was carried out after water storage (37 ℃, 24 h) and thermocycling (3000 times) . The photograph and fracture mode analysis were performed using Tele-macro mode of Shofu EyeSpecial C-Ⅳ dental camera. The data from SBS were analyzed by using Three-Way ANOVA (thermocycling, adhesive and sandblasting) , and Turkey (α = 0.05) . ResultsAfter water storage, the highest bond strength was achieved by the TNU in the non-blasting group (9.92 ± 1.19) MPa and the sandblasting group (9.97 ± 1.03) MPa, respectively; After 3000 times thermocycling, the best bonding performance was achieved by PBU in the non-blasting group (6.75 ± 0.99) MPa and the sandblasting group (7.22 ± 1.30) MPa, respectively. The Three-Way ANOVA analysis indicated that the SBS was significantly affected by thermocycling (F = 3 045.429, P<0.001) , adhesive (F = 361.165, P<0.001) and sandblasting (F = 80.050, P<0.001) ; There was significant interaction between the three factors: thermocycling and adhesive (F = 155.724, P<0.001) , adhesive and sand blasting (F = 3.535, P = 0.002) , as well as thermocycling and sandblasting (F = 9.184, P = 0.003) . The interaction among thermocycling, adhesive and sand blasting was significantly different (F = 12.392, P<0.001) . Conclusions(1) The bond strength of the universal adhesive between composite resin and PEEK was significantly improved by sandblasting after 37 ℃ water storage for 24 h; (2) The bond strength between composite resins and PEEK significantly decreased after thermocycling for 3000 times; (3) The bonding durability of PBU was superior to other universal adhesives in the present study.