Aali Khulud A Al
Department of Clinical Dental Sciences, College of Dentistry, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia.
Photodiagnosis Photodyn Ther. 2025 Oct;55:104740. doi: 10.1016/j.pdpdt.2025.104740. Epub 2025 Jul 31.
Assessment of the effectiveness of various pre-treatment techniques, i.e., Airborne particle abrasion (APA), Er, Cr: YSGG lasers (ECL), Rose Bengal (RB) activated via Low-level laser therapy (LLLT) on the repair bond strength (RBS) of resin matrix ceramics (RMC) bonded with different viscosity composites.
RMC blocks were meticulously cut into 78 discs. All the discs were then randomly assigned to three separate groups based on the conditioning regime(n = 26): Group 1 (APA), Group 2 (ECL), and Group 3 (LLLT-RB). Five samples from each category were selected at random to assess Ra(n = 5). One prepared sample from each group underwent surface topography analysis and energy dispersive X-ray analysis (EDX) (n = 1). Each group was further categorized into two subgroups based on the type of composite resin used(n = 10). High viscosity micro-hybrid composite (A) and a low viscosity injectable composite (B) followed by artificial aging. RBS and failure mode were analyzed using a universal testing machine and stereomicroscope. The Ra and RBS data underwent comparison through a two-way ANOVA and post hoc Tukey test (p˂0.05).
The maximum Ra was exhibited by Group 2 (ECL) (1056.65 ± 0.029 µm) discs. Conversely, Group 3 (LLLT-RB) (753.31 ± 0.045 µm) conditioned samples demonstrated the minimum Ra. The highest bond strength score was recorded by Group 2B (ECL + Injectable) (10.63±0.19 MPa). In contrast, the lowest average bond strength value was noted in Group 3A (LLLT-RB + Microhybrid) (7.99±0.77 MPa).
ECL has the potential to serve as a hybrid ceramic surface conditioner, as it improves the surface roughness scores. Furthermore, low-viscosity injectable composites showed better performance than high-viscosity composites in achieving higher bond strength.
评估各种预处理技术的有效性，即空气颗粒喷砂（APA）、铒铬：钇钪镓石榴石激光（ECL）、通过低强度激光疗法（LLLT）激活的孟加拉玫瑰红（RB）对与不同粘度复合材料粘结的树脂基陶瓷（RMC）的修复粘结强度（RBS）的影响。
将RMC块精心切割成78个圆盘。然后根据处理方式将所有圆盘随机分为三组（n = 26）：第1组（APA）、第2组（ECL）和第3组（LLLT-RB）。从每个类别中随机选择五个样本评估表面粗糙度平均高度（Ra）（n = 5）。从每组中选取一个制备好的样本进行表面形貌分析和能量色散X射线分析（EDX）（n = 1）。根据所用复合树脂的类型，每组进一步分为两个亚组（n = 10）。高粘度微混合复合材料（A）和低粘度可注射复合材料（B），然后进行人工老化。使用万能试验机和立体显微镜分析RBS和失效模式。通过双向方差分析和事后Tukey检验对Ra和RBS数据进行比较（p˂0.05）。
第2组（ECL）圆盘的表面粗糙度平均高度（Ra）最大（为1056.65±0.029 µm）。相反，第3组（LLLT-RB）处理的样本表面粗糙度平均高度（Ra）最小（为753.31±0.045 µm）。第2B组（ECL + 可注射）记录到最高的粘结强度得分（10.63±0.19 MPa）。相比之下，第3A组（LLLT-RB + 微混合）的平均粘结强度值最低（7.99±0.77 MPa）。
ECL有潜力作为混合陶瓷表面处理剂，因为它能提高表面粗糙度得分。此外，在实现更高的粘结强度方面，低粘度可注射复合材料比高粘度复合材料表现更好。
