J Adhes Dent. 2019;21(4):307-317. doi: 10.3290/j.jad.a42931.
To evaluate the effect of different surface treatments on the surface morphology of CAD/CAM ceramics and on their bond strength to cement.
Sixty cubic sections were cut from each of three materials (lithium disilicate glass-ceramic [DL], leucite-based glass-ceramic [LC], resin-matrix ceramic composite [RMCC]) and were treated as follows (n = 10): 1. no treatment (C); 2. 5% hydrofluoric acid applied for 20 s plus silane (HF5% 20 s); 3. 5% hydrofluoric acid applied for 60 s plus silane (HF5% 60 s); 4. 10% hydrofluoric acid applied for 20 s plus silane (HF10% 20 s); 5. 10% hydrofluoric acid applied for 60 s plus silane (HF10% 60 s); 6. Self-etching ceramic primer (MBEP). Ceramic cubes were bonded to pre-polymerized composite resin cubes with a composite cement. Each set was cut into stick-shaped specimens (1 ± 0.3 mm2). After 24-h water storage, microtensile bond strength (µTBS) was measured. Data were analyzed using two-way ANOVA and Tukey's test (α = 0.05). Failure pattern and surface morphology were assessed using scanning electron microscopy (SEM).
Both factors significantly influenced µTBS, while no interaction between factors was found. RMCC presented statistically higher µTBS values than LC and DL, while the surface treatments HF5% 20 s, HF5% 60 s, HF10% 20 s, HF10% 60 s and MBEP, did not show statistical differences between them, although they resulted in statistically significantly higher bond strengths than did C groups. A high number of pre-test failures were detected in the control groups for all materials. MBEP produced less extensive surface alterations than did all HF treatments.
All of the hydrofluoric acid treatments tested showed similar cement-ceramic bonding efficacy. The self-etching ceramic primer produced less surface alterations and comparable bonding efficacy compared to separate hydrofluoric acid/silane primer application.
评估不同表面处理对 CAD/CAM 陶瓷表面形态及其与水泥结合强度的影响。
从三种材料（锂硅玻璃陶瓷[DL]、透锂长石玻璃陶瓷[LC]、树脂基质陶瓷复合材料[RMCC]）中各切出 60 个立方段，对每个材料的立方段分别进行以下处理（n = 10）：1. 不处理（C）；2. 5%氢氟酸处理 20 秒加硅烷（HF5% 20 s）；3. 5%氢氟酸处理 60 秒加硅烷（HF5% 60 s）；4. 10%氢氟酸处理 20 秒加硅烷（HF10% 20 s）；5. 10%氢氟酸处理 60 秒加硅烷（HF10% 60 s）；6. 自酸蚀陶瓷底漆（MBEP）。用复合水泥将陶瓷方块与预聚合复合树脂方块粘结。每一组都被切割成棒状试件（1 ± 0.3 mm2）。在 24 小时水储存后，测量微拉伸结合强度（µTBS）。使用双因素方差分析和 Tukey 检验（α = 0.05）分析数据。使用扫描电子显微镜（SEM）评估失效模式和表面形态。
两个因素都显著影响µTBS，而两个因素之间没有相互作用。RMCC 的 µTBS 值显著高于 LC 和 DL，而 HF5% 20 s、HF5% 60 s、HF10% 20 s、HF10% 60 s 和 MBEP 等表面处理之间没有统计学差异，尽管它们的结合强度显著高于 C 组。所有材料的对照组中都检测到大量的预测试失败。MBEP 产生的表面变化比所有 HF 处理都少。
所有测试的氢氟酸处理均显示出相似的水泥-陶瓷粘结效果。自酸蚀陶瓷底漆的表面变化较少，与单独使用氢氟酸/硅烷底漆的粘结效果相当。
