Department of Prosthodontics, Autonomous University of San Luis Potosí, San Luis Potosí, Mexico.
Basic Science Laboratory, Faculty of Stomatology, Autonomous University of San Luis Potosí, San Luis Potosí, Mexico.
Odontology. 2020 Jul;108(3):415-423. doi: 10.1007/s10266-020-00497-w. Epub 2020 Feb 21.
The purpose of this study was to investigate the tensile bond strength (TBS) and shear bond strength (SBS) between a zirconia core and fluoroapatite-pressed ceramic after the application of glass 46SP6 and AP40 via the ISO-17095:2013 methodology. Sintered zirconia beams (n = 120) were divided into four groups: (a) control: no treatment; (b) ZirL: IPS-E max ceram ZirLiner coating; (c) glass AP40 coating; and (d) glass 46SP6 coating. A fluoroapatite ceramic (IPS e.max Zir Press, Ivoclar Vivadent) beam was injected perpendicularly on top of each zirconia (Zenostar, Wieland Dental) beam forming a cross-bonded specimen. All groups were sub-divided into two for tensile and shear bond strength tests using a universal testing machine. Data were analyzed using the Kruskal-Wallis, Pearson Chi and Mann-Whitney U test (α = 0.05). The failure modes were measured using a stereomicroscope for each group. Scanning electron and atomic force microscopy were also employed. Zirconia surface modification with glass AP40 showed higher TBS values followed by the ZirL group with statistical differences (p < 0.05). SBS values showed no statistical differences between the groups. AFM analysis showed higher roughness values (Ra) in the 46SP6 and AP40 groups (p < 0.05). Glass coating AP40 exhibited promising bond strength results between zirconia and fluorapatite veneering ceramic, making it better for chemical and mechanical interlocking which may improve bilayered restorations longevity.
本研究旨在通过 ISO-17095:2013 方法研究玻璃 46SP6 和 AP40 应用于氧化锆核与氟磷灰石压制陶瓷之间的拉伸粘结强度 (TBS) 和剪切粘结强度 (SBS)。将烧结氧化锆梁 (n = 120) 分为四组：(a) 对照组：不处理；(b) ZirL：IPS-E max ceram ZirLiner 涂层；(c) 玻璃 AP40 涂层；(d) 玻璃 46SP6 涂层。将氟磷灰石陶瓷 (IPS e.max Zir Press，Ivoclar Vivadent) 梁垂直注入每个氧化锆 (Zenostar，Wieland Dental) 梁的顶部，形成一个十字粘结试件。所有组均根据拉伸和剪切粘结强度测试分为两组，使用万能试验机进行测试。使用 Kruskal-Wallis、Pearson Chi 和 Mann-Whitney U 检验 (α = 0.05) 分析数据。使用立体显微镜测量每组的失效模式。还使用了扫描电子显微镜和原子力显微镜。玻璃 AP40 对氧化锆表面进行改性后，TBS 值较高，其次是 ZirL 组，差异有统计学意义 (p < 0.05)。各组 SBS 值无统计学差异。AFM 分析显示，46SP6 和 AP40 组的表面粗糙度值 (Ra) 较高 (p < 0.05)。玻璃涂层 AP40 显示出氧化锆和氟磷灰石贴面陶瓷之间有良好的粘结强度结果，更有利于化学和机械互锁，这可能会提高双层修复体的寿命。
