J Adhes Dent. 2023 Jun 8;25:125-132. doi: 10.3290/j.jad.b4145161.
To investigate the effects of different surface treatments and thermocycling on shear bond strength (SBS) be-tween resin cement and zirconia-reinforced lithium-silicate (ZLS) ceramic.
96 ZLS ceramic specimens were randomly allocated to four different surface treatment groups: etch and silane (ES), etch and universal primer (EUP), self-etching primer (SEP), and sandblasting and silane (SS). Stan-dardized composite cylinders were bonded to surface-treated ZLS ceramic, after which SBS was obtained either after 24-h water storage only or with an additional 5000 thermal cycles (TC), resulting in eight subgroups (n = 12). After evaluation of failure mode under a stereomicroscope, representative SEM images were acquired. To examine areal average surface roughness (Sa), additional ZLS specimens were prepared and randomly allocated to 3 groups: hydrofluoric acid etching, self-etching primer, and sandblasting (n = 10). Supplementary specimens were examined using field-emission scanning electron microscopy (FE-SEM) (n = 2) and atomic force microscopy (AFM) (n = 2) to investigate their surface topographies.
ANOVA showed a statistically significant difference in SBS following different surface treatment protocols after 24-h water storage (p < 0.001). However, TC groups revealed no statistically significant difference in their SBS (p = 0.394). All surface treated groups were significantly affected by TC (p < 0.001), except for the SS group (p = 0.48). Sa was signifi-cantly influenced by the different surface treatment protocols (p < 0.001).
The ability of self-etching primer to achieve comparable bond strength with a less technique-sensitive ap-proach makes it a favorable alternative to ES for the surface treatment of ZLS ceramics.
研究不同表面处理和热循环对树脂水泥与氧化锆增强硅酸锂（ZLS）陶瓷之间剪切结合强度（SBS）的影响。
96 个 ZLS 陶瓷样本被随机分配到四个不同的表面处理组：酸蚀和硅烷（ES）、酸蚀和通用底漆（EUP）、自酸蚀底漆（SEP）和喷砂和硅烷（SS）。标准复合圆柱体被粘接到经过表面处理的 ZLS 陶瓷上，然后在仅 24 小时水储存后或在另外 5000 次热循环（TC）后获得 SBS，从而产生 8 个亚组（n = 12）。在立体显微镜下评估失效模式后，获取代表性的 SEM 图像。为了检查表面平均粗糙度（Sa），准备了额外的 ZLS 样本并随机分配到 3 个组：氢氟酸蚀刻、自酸蚀底漆和喷砂（n = 10）。使用场发射扫描电子显微镜（FE-SEM）（n = 2）和原子力显微镜（AFM）（n = 2）检查补充样本，以研究其表面形貌。
方差分析显示，在 24 小时水储存后，不同表面处理方案的 SBS 存在统计学上的显著差异（p < 0.001）。然而，TC 组的 SBS 没有统计学上的显著差异（p = 0.394）。所有经表面处理的组均受到 TC 的显著影响（p < 0.001），除 SS 组（p = 0.48）外。Sa 受到不同表面处理方案的显著影响（p < 0.001）。
自酸蚀底漆能够实现与 ES 相当的粘结强度，且方法敏感性较低，因此是 ZLS 陶瓷表面处理的一种有吸引力的替代方法。
