Universidade Estadual Paulista - Unesp, Araçatuba School of Dentistry, Department of Dental Materials and Prosthodontics, Araçatuba, SP, Brazil.
Braz Oral Res. 2020 Jun 24;34:e063. doi: 10.1590/1807-3107bor-2020.vol34.0063.
This in vitro study aimed to evaluate the effects of different luting protocols on the thickness of luting interface of ceramic laminate veneers. Thirty-six lithium disilicate blocks (7 × 8 × 0.6 mm) were cemented onto bovine enamel. They were divided into 6 groups based on the luting protocol (no previous photoactivation of the dental adhesive; previous activation of the dental adhesive only on enamel surface; and previous photoactivation of the dental adhesive on both the enamel surface and inner surface of ceramic laminate) and the luting materials used (Single Bond Universal/RelyX Veneer and Tetric N Bond/Variolink Veneer). The luting interface thickness of ceramic laminate veneers was evaluated using a laser scanning confocal microscope (n = 6). The luting interface measurements were analyzed using 2-way ANOVA and the Tukey least significant difference test (α = 0.05). Prior activation of the adhesive on the dental enamel and inside the ceramic laminate exhibited higher luting interface thickness than that with no prior photoactivation of both luting materials (p < 0.05). Specimens cemented with Tetric N Bond/Variolink Veneer, submitted for prior photoactivation of the adhesive on the dental enamel and on both dental enamel and inner surface of ceramic, exhibited lower luting interface thickness than those luted with Single Bond Universal/RelyX Veneer (p < 0.05). The prior photoactivation of dental adhesives influenced the thickness of luting interface in laminate restorations. Tetric N Bond/Variolink Veneer yielded more satisfactory results than Single Bond Universal/RelyX Veneer when the adhesive was light activated.
本体外研究旨在评估不同粘固方案对陶瓷贴面的粘固界面厚度的影响。将 36 个锂硅二酸盐块（7×8×0.6mm）粘接到牛牙釉质上。根据粘固方案（不预先对牙科胶粘剂进行光活化；仅对牙釉质表面进行预先活化；以及预先对牙釉质表面和陶瓷贴面内部进行光活化）和使用的粘固材料（Single Bond Universal/RelyX Veneer 和 Tetric N Bond/Variolink Veneer）将其分为 6 组。使用激光扫描共聚焦显微镜（n=6）评估陶瓷贴面的粘固界面厚度。使用 2 路方差分析和 Tukey 最小显著差异检验（α=0.05）对粘固界面测量值进行分析。与两种粘固材料均不预先光活化相比，预先对牙釉质和陶瓷内部的胶粘剂进行光活化会导致更高的粘固界面厚度（p<0.05）。与用 Single Bond Universal/RelyX Veneer 粘固的试件相比，用 Tetric N Bond/Variolink Veneer 粘固且预先对牙釉质和牙釉质和陶瓷内部的胶粘剂进行光活化的试件的粘固界面厚度更低（p<0.05）。预先对牙科胶粘剂进行光活化会影响层压修复体的粘固界面厚度。当胶粘剂进行光活化时，Tetric N Bond/Variolink Veneer 比 Single Bond Universal/RelyX Veneer 产生更令人满意的结果。
