Department of Prosthetic Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat-Yai, Songkhla, 90110, Thailand.
Discipline of Prosthodontics, School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2006, Australia.
Clin Oral Investig. 2023 Dec;27(12):7833-7840. doi: 10.1007/s00784-023-05374-8. Epub 2023 Nov 22.
To assess the effect of glass-ceramic coated zirconia versus alumina air-abraded zirconia on the shear bond strength (SBS) of resin cement and investigate the residual stresses present on both mechanically pre-treated surfaces.
A total of 180 zirconia disks, with diameters of 10 mm and 5 mm, were divided into two groups: DCMhotbond glass-ceramic coated, followed by hydrofluoric acid etching (DCM), and alumina air-abraded (AB). All mechanically pre-treated disks were conditioned with G-Multi Primer and bonded using G-Cem Linkforce Cement. Ninety specimens were immersed in distilled water for 24 h and subsequently allocated into three groups based on aging conditions (n = 15/subgroups): immediate testing, 5000 thermal cycles, and 10,000 thermal cycles. Then, the shear bond strength was assessed, and the obtained data were subjected to analysis using a two-way ANOVA, followed by a one-way ANOVA and Tukey's HSD post hoc test (α = 0.05). The residual stresses present on both mechanically pre-treated surfaces were examined using X-ray diffraction analysis.
The mean SBS values of the DCM and AB groups showed no significant difference under each aging condition. The SBS of DCM groups was not affected by thermal cycles, whereas the SBS of AB groups exhibited a significant decrease following thermal cycles. Glass-ceramic coated surfaces exhibited higher compressive stresses than alumina air-abrasion.
The DCMhotbond glass-ceramic coated zirconia showed comparable bond strength to the alumina air-abrasion technique.
The DCMhotbond glass-ceramic coating technique is a promising alternative for zirconia surface pre-treatment. However, further investigations are needed before suggesting its clinical use.
评估玻璃陶瓷涂层氧化锆与氧化铝喷砂氧化锆对树脂水泥的剪切结合强度（SBS）的影响，并研究两种机械预处理表面的残余应力。
将直径为 10mm 和 5mm 的 180 个氧化锆圆盘分为两组：DCMhotbond 玻璃陶瓷涂层，然后进行氢氟酸蚀刻（DCM），以及氧化铝喷砂（AB）。所有机械预处理的圆盘均用 G-Multi Primer 处理，并使用 G-Cem Linkforce 水泥进行粘合。将 90 个试件浸入蒸馏水中 24 小时，然后根据老化条件将其分为三组（n=15/组）：即时测试、5000 次热循环和 10000 次热循环。然后评估剪切结合强度，并使用双向方差分析、单向方差分析和 Tukey 的 HSD 事后检验（α=0.05）对获得的数据进行分析。使用 X 射线衍射分析检查两种机械预处理表面的残余应力。
在每种老化条件下，DCM 和 AB 组的平均 SBS 值均无显著差异。DCM 组的 SBS 不受热循环影响，而 AB 组的 SBS 在热循环后显著下降。玻璃陶瓷涂层表面的压应力高于氧化铝喷砂。
DCMhotbond 玻璃陶瓷涂层氧化锆与氧化铝喷砂技术具有相当的结合强度。
DCMhotbond 玻璃陶瓷涂层技术是氧化锆表面预处理的一种有前途的替代方法。然而，在建议其临床应用之前，还需要进一步的研究。
