Repair bond strength of different CAD-CAM ceramics after various surface treatments combined with laser irradiation

• Published in: Lasers in medical science 2023-01, Vol.38 (1), p.51-51, Article 51
• Main Authors: Aladağ, Seda Üstün, Ayaz, Elif Aydoğan
• Format: Article
• Language: English
• Subjects: Adhesive bonding; Aluminosilicates; Aluminum silicates; Bonding agents; Bonding strength; CAD/CAM; CAM; Ceramics; Ceramics - chemistry; Composite materials; Composite Resins - chemistry; Computer aided manufacturing; Computer-Aided Design; Dental Bonding; Dental Porcelain; Dentistry; Erbium; Etching; Glass ceramics; Hydrofluoric acid; Irradiation; Lasers; Lithium; Lithium aluminosilicate; Materials Testing; Medicine; Medicine & Public Health; Neodymium lasers; Optical Devices; Optics; Original Article; Partial stabilization; Photonics; Polycrystals; Quantum Optics; Repair; Resin Cements - chemistry; Resins; Sandblasting; Semiconductor lasers; Shear Strength; Surface Properties; Surface treatment; Tetragonal zirconia; Variance analysis; YAG lasers; Yttria-stabilized zirconia; Yttrium; Zirconia; Zirconium - chemistry
• ISSN: 1435-604X; 0268-8921; 1435-604X
• 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   0.05). 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   0.05). 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.