Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zurich, Center for Dental and Oral Medicine, Plattenstrasse 11, Zurich, Switzerland.
Dent Mater. 2010 Jun;26(6):553-9. doi: 10.1016/j.dental.2010.02.003. Epub 2010 Mar 5.
To assess the bonding potential of a universal composite resin cement and an adhesive/composite system to differently pre-treated PEEK surfaces.
One hundred and fifty PEEK disks were embedded in epoxy resin, polished (P4000 grit) and treated as follows (n=30/group): (A) no treatment, (B) acid etching with sulfuric acid (98%) for 1 min, (C) sandblasting for 10s with 50 microm alumina, (D) sandblasting for 10s with 110 microm alumina and (E) silica coating using the Rocatec system (3M ESPE). Polished and sandblasted (50 microm alumina) cp titanium (grade 4) served as a control. Acrylic hollow cylinders were either luted with a universal composite resin cement (RelyX Unicem) or an unfilled resin (Heliobond) and a hybrid composite (Tetric) to the specimens. Bond strength was measured in a shear test and failure modes were assessed. Statistic analysis was performed with one-way ANOVA followed by a post hoc Scheffé test and unpaired t-tests.
With the universal composite resin cement, no bond could be established on any PEEK surfaces, except specimens etched with sulfuric acid (19.0+/-3.4MPa). Shear bond strength to titanium was significantly lower (8.7+/-2.8MPa, p<0.05). Applying the adhesive/composite system, shear bond strength values on pre-treated PEEK ranged from 11.5+/-3.2MPa (silica coating) to 18.2+/-5.4MPa (acid etched) with no statistically significant differences (p>0.05). No bond was obtained on the polished surface.
Bonding to PEEK is possible when using a bonding system. No adherence can be achieved with the tested universal composite resin cement except on an etched surface. The results strongly encourage further research in PEEK application in dentistry.
评估通用复合树脂粘结剂和粘结/复合系统对不同预处理聚醚醚酮（PEEK）表面的粘结潜力。
将 150 个 PEEK 圆盘嵌入环氧树脂中，进行抛光（P4000 砂纸），然后按以下方式进行处理（每组 30 个样本）：（A）不处理，（B）用硫酸（98%）酸蚀 1 分钟，（C）用 50 微米氧化铝喷砂 10 秒，（D）用 110 微米氧化铝喷砂 10 秒，（E）使用 Rocatec 系统（3M ESPE）进行二氧化硅涂层。经过抛光和喷砂（50 微米氧化铝）的 cp 钛（四级）作为对照。将丙烯酸空心圆柱体用通用复合树脂粘结剂（RelyX Unicem）或未填充树脂（Heliobond）和混合复合树脂（Tetric）粘结到样本上。在剪切试验中测量粘结强度，并评估失效模式。采用单向方差分析（one-way ANOVA），随后进行事后 Scheffé 检验和未配对 t 检验进行统计分析。
用通用复合树脂粘结剂，除了用硫酸酸蚀的样本（19.0+/-3.4MPa）外，无法在任何 PEEK 表面建立粘结。与钛的剪切粘结强度明显较低（8.7+/-2.8MPa，p<0.05）。使用粘结/复合系统，预处理 PEEK 的剪切粘结强度值范围为 11.5+/-3.2MPa（二氧化硅涂层）至 18.2+/-5.4MPa（酸蚀），无统计学差异（p>0.05）。在抛光表面未获得粘结。
当使用粘结系统时，PEEK 的粘结是可能的。除了酸蚀表面外，测试的通用复合树脂粘结剂无法粘结。结果强烈鼓励进一步研究 PEEK 在牙科中的应用。
