Abstract The objective of this in vitro study was to investigate the effect of material type, resin cement type, surface treatment, and aging on the microshear bond strength (µSBS) of self-adhesive resin cements (SARCs) to CAD/CAM blocks. CAD/CAM blocks (CeraSmart, CS; Lava Ultimate, LU; Shofu Block HC, HC; Vita Enamic, VE; Vitablocks Mark II, VM) were cut into 3-mm thick slices (96 specimens for each) and divided into groups: no treatment; 9% hydrofluoric acid etching; aluminum-oxide sandblasting; CoJet sandblasting. Following, the specimens were divided into three subgroups according to SARCs applied. Each specimen received four resin cement microtubules (n = 32 per subgroup). After 24 h, the cylinders of SARC were equally assigned into two groups (n = 16): immediate µSBS testing and µSBS testing after thermocycling. A shear force was applied to the adhesive interface through a μSBS testing device. Additionally, specimens were analyzed with a contact profilometer and were evaluated with scanning electron microscopy. The data were analyzed using four-way ANOVA, p < 0.05. Material type, resin cement type, surface treatment, and aging influenced the µSBS values (p < 0.001). A significant decrease in µSBS was recorded for all groups after thermocycling. The most common failure mode was detected as an adhesive failure. The surface treatment and material type influenced the surface roughness with a significant interaction. Sandblasting was more successful for CS, LU, and HC, while HF etching was better for VE and VM. The use of MDP-containing SARCs would be advantageous for the zirconia-containing CAD/CAM materials (LU and HC).

中文翻译：

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当代自粘树脂水门汀与 CAD/CAM 修复材料的微剪切粘结强度：表面处理和老化的影响

摘要 这项体外研究的目的是研究材料类型、树脂水泥类型、表面处理和老化对自粘树脂水泥 (SARC) 与 CAD/CAM 块的微剪切粘合强度 (µSBS) 的影响。CAD/CAM 块（CeraSmart，CS；Lava Ultimate，LU；Shofu Block HC，HC；Vita Enamic，VE；Vitablocks Mark II，VM）被切成 3 毫米厚的切片（每个切片 96 个样本）并分成几组：没有治疗；9%氢氟酸蚀刻；氧化铝喷砂；CoJet喷砂。接下来，根据所应用的 SARC 将样本分为三个亚组。每个样本接受四个树脂水泥微管（每个亚组 n = 32）。24 小时后，SARC 的圆柱体被平均分为两组 (n = 16)：即刻 µSBS 测试和热循环后的 µSBS 测试。通过 μSBS 测试装置向粘合剂界面施加剪切力。此外，样品用接触式轮廓仪进行分析，并用扫描电子显微镜进行评估。使用四向方差分析对数据进行分析，p < 0.05。材料类型、树脂水泥类型、表面处理和老化影响 µSBS 值 (p < 0.001)。热循环后，所有组的 μSBS 均显着降低。最常见的失效模式被检测为粘合剂失效。表面处理和材料类型以显着的相互作用影响表面粗糙度。喷砂对 CS、LU 和 HC 更成功，而 HF 蚀刻对 VE 和 VM 效果更好。使用含 MDP 的 SARC 将有利于含氧化锆的 CAD/CAM 材料（LU 和 HC）。