J Adhes Dent. 2021 Jun 5;23(3):267-275. doi: 10.3290/j.jad.b1367913.
To compare the shear bond strength of composite cement to lithium-disilicate glass-ceramic coated zirconia vs to alumina air-abraded zirconia and to analyze the residual stresses on both of lithium-disilicate glass-ceramic coated zirconia vs alumina air-abraded zirconia specimens.
One hundred eighty zirconia disks (diameters 10 mm and 5 mm, 4.5 mm thick) were divided into two groups: lithium-disilicate glass-ceramic coating followed by hydrofluoric acid etching and Monobond N Primer (LiDi) or alumina air-abrasion (AA). For each group, two different sizes of identically pre-treated zirconia specimens were bonded with Multilink Speed Cement. A total of 90 specimens were stored in distilled water at 37°C for 24 h and then assigned to three subgroups (n = 15/test group): 1. short-term test; 2. thermocycling for 5000 cycles; 3. thermocycling for 10,000 cycles. Bond strength was tested in shear mode and results were analyzed using two-way ANOVA, followed by one-way ANOVA and Tukey's HSD (α = 0.05). Failure mode and surfaces were analyzed with optical and scanning electron microscopy. X-ray diffraction was used to analyze t-m phase transformation and residual stresses on mechanically pre-treated LiDi and AA surfaces.
The LiDi groups recorded higher mean bond strength than AA groups after thermocycling (p < 0.05). Thermocycling did not affect the bond strength of either LiDi or AA groups (p > 0.05). Most of specimens in AA groups exhibited mixed failure. Alumina air-abraded surfaces exhibited higher residual compressive stresses than did surfaces with a lithium-disilicate glass-ceramic coating.
Following thermocycling, composite-zirconia bond strength of specimens with a lithium-disilicate glass-ceramic coating was greater than that of alumina air-abraded specimens.
比较复合水泥与锂硅玻璃陶瓷涂层氧化锆、氧化铝喷砂氧化锆的剪切粘结强度，并分析两种锂硅玻璃陶瓷涂层氧化锆和氧化铝喷砂氧化锆试件的残余应力。
将 180 个氧化锆圆盘（直径 10mm 和 5mm，4.5mm 厚）分为两组：锂硅玻璃陶瓷涂层，然后用氢氟酸蚀刻和 Monobond N 底漆（LiDi）或氧化铝喷砂（AA）。对于每组，两种尺寸相同的预处理氧化锆试件用 Multilink Speed Cement 粘结。共有 90 个试件在 37°C 的蒸馏水中储存 24 小时，然后分为三组（n = 15/测试组）：1. 短期测试；2. 热循环 5000 次；3. 热循环 10000 次。在剪切模式下测试粘结强度，结果采用双因素方差分析，然后采用单因素方差分析和 Tukey HSD（α=0.05）。用光学和扫描电子显微镜分析破坏模式和表面。用 X 射线衍射分析机械预处理 LiDi 和 AA 表面的 t-m 相转变和残余应力。
热循环后，LiDi 组的平均粘结强度高于 AA 组（p<0.05）。热循环对 LiDi 或 AA 组的粘结强度没有影响（p>0.05）。AA 组的大多数试件均表现为混合破坏。氧化铝喷砂表面的残余压应力高于锂硅玻璃陶瓷涂层表面。
热循环后，具有锂硅玻璃陶瓷涂层的复合氧化锆试件的粘结强度大于氧化铝喷砂试件。
