Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry.
Dent Mater J. 2021 Mar 31;40(2):364-378. doi: 10.4012/dmj.2019-431. Epub 2020 Oct 24.
This study examined the effects of sandblasting, hydrofluoric acid etching and priming on the shear bond strength of self-adhesive resin cement between seven different CAD/CAM resin composites and a resin composite core material at 24-h after cement mixing. Five surface treatments [control (C), sandblasting (S), priming (P), sandblasting with priming (SP), and 9% HF etching with priming (HFP)] were performed respectively for disc specimens of CAD/CAM blocks. There were no significant differences in bond strength among the C, S, and P, except for one block (p>0.05). SP showed a greater bond strength than S. Weibull moduli were not changed significantly among all treatments for all blocks, whereas the strengths with 5% and 95% failure probability of SP and HFP showed greater values than the others. The bond strengths of HFP were comparable to those of SP. Priming after sandblasting or HF etching could be effective to increase the bond strength of CAD/CAM blocks.
本研究考察了喷砂、氢氟酸蚀刻和底涂对七种不同 CAD/CAM 树脂复合材料与树脂复合材料核材料在混合后 24 小时的自粘树脂水泥之间剪切结合强度的影响。分别对 CAD/CAM 块的圆盘试件进行了五种表面处理[对照（C）、喷砂（S）、底涂（P）、喷砂底涂（SP）和 9%氢氟酸底涂（HFP）]。除了一个块体（p>0.05）外，C、S 和 P 之间的结合强度没有显著差异。SP 的结合强度大于 S。所有处理组的威布尔模数在所有块体中均无显著变化，而 SP 和 HFP 的 5%和 95%失效概率的强度值大于其他处理组。HFP 的结合强度与 SP 相当。喷砂或氢氟酸蚀刻后底涂可能有效提高 CAD/CAM 块的结合强度。
