Department of Prosthodontics, Faculty of Dentistry, Bursa Uludağ University, Bursa, Turkey.
Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
Lasers Med Sci. 2023 Jan 23;38(1):51. doi: 10.1007/s10103-023-03715-3.
The aim of this study was to evaluate the effect of different surface treatments combined with laser irradiation on the shear bond strength of different CAD-CAM ceramics to composite resin. A total of hundred forty-seven ceramic specimens with thicknesses of 2.5 mm were prepared from three different CAD-CAM ceramics (an yttrium oxide partially stabilized tetragonal zirconia polycrystal (Y-TZP); a zirconia-reinforced lithium silicate glass ceramic (ZLS); and a lithium disilicate-strengthened lithium aluminosilicate glass ceramic (LD-LAS)) and subjected to seven groups of treatment (n = 7): (1) control (no treatment), (2) Er:YAG laser irradiation, (3) Nd:YAG laser irradiation, (4) etching with hydrofluoric acid (HFA), (5) Er:YAG + HFA, (6) Nd:YAG + HFA, and (7) sandblasting. After surface treatment procedures, a ceramic primer (Clearfil Ceramic Primer Plus, Kuraray, Japan) was applied to the ceramics. Bonding agent (Single Bond Universal Adhesive, 3 M ESPE, USA) was then applied, and the composite resin (Estelite Sigma Quick, Kuraray, Japan) was layered on the ceramic surfaces. The shear bond strength test was performed using a universal testing machine at a load of 0.5 mm/min. Data were analyzed by 2-way analysis of variance (ANOVA), and the Bonferroni correction was used for pairwise comparisons (α = 0.05). Compared to the bond strength of the control group, irradiation by Er:YAG and Nd:YAG lasers alone improved the bond strength of the composite resin to the Y-TZP (P < 0.001) but did not change the bond strength of composite resin to the ZLS and LD-LAS (P > 0.05). Compared to the bond strength of the control group, etching with HFA alone increased the bond strength of the composite resin to the ZLS and LD-LAS (P < 0.001) but did not affect the bond strength of the composite resin to the Y-TZP (P > 0.05). The highest bond strength of ZLS was obtained using HFA + Er:YAG, and the highest bond strength for LD-LAS was obtained using HFA + Nd:YAG. It was concluded that Er:YAG and Nd:YAG laser treatments presented the highest repair bond strength between the composite resin and Y-TZP ceramics. Er:YAG and Nd:YAG laser treatments in conjuction with HFA presented the highest repair bond strength between the composite resin and the glassy ceramics, ZLS, and LD + LAS.
本研究旨在评估不同表面处理方法与激光照射联合应用对不同 CAD-CAM 陶瓷与复合树脂之间剪切粘结强度的影响。共制备了 147 个厚度为 2.5mm 的陶瓷样本，这些样本分别来自三种不同的 CAD-CAM 陶瓷（氧化钇部分稳定四方氧化锆多晶（Y-TZP）；氧化锆增强硅酸锂玻璃陶瓷（ZLS）；锂二硅增强锂铝硅玻璃陶瓷（LD-LAS）），并将其分为七组（n=7）：（1）对照组（无处理）；（2）铒：YAG 激光照射；（3）钕：YAG 激光照射；（4）氢氟酸（HFA）蚀刻；（5）铒：YAG+HFA；（6）钕：YAG+HFA；（7）喷砂。经过表面处理程序后，在陶瓷上涂覆陶瓷底涂剂（Clearfil Ceramic Primer Plus，Kuraray，日本）。然后涂覆粘结剂（Single Bond Universal Adhesive，3M ESPE，美国），并将复合树脂（Estelite Sigma Quick，Kuraray，日本）分层涂覆在陶瓷表面。使用万能试验机以 0.5mm/min 的加载速度进行剪切粘结强度测试。使用双向方差分析（ANOVA）对数据进行分析，并使用 Bonferroni 校正进行两两比较（α=0.05）。与对照组的粘结强度相比，单独使用铒：YAG 和钕：YAG 激光照射可提高复合树脂与 Y-TZP 的粘结强度（P<0.001），但不改变复合树脂与 ZLS 和 LD-LAS 的粘结强度（P>0.05）。与对照组的粘结强度相比，单独使用 HFA 蚀刻可提高复合树脂与 ZLS 和 LD-LAS 的粘结强度（P<0.001），但不影响复合树脂与 Y-TZP 的粘结强度（P>0.05）。ZLS 的最高粘结强度是通过 HFA+铒：YAG 获得的，LD-LAS 的最高粘结强度是通过 HFA+钕：YAG 获得的。结论是，铒：YAG 和钕：YAG 激光处理在复合树脂与 Y-TZP 陶瓷之间呈现出最高的修复粘结强度。铒：YAG 和钕：YAG 激光处理联合 HFA 在复合树脂与玻璃陶瓷、ZLS 和 LD-LAS 之间呈现出最高的修复粘结强度。
