Department of Prosthetic Dental Sciences, College of Dentistry Prince Sattam Bin Abdulaziz University, 11942 Alkharj, Saudi Arabia.
Photodiagnosis Photodyn Ther. 2024 Oct;49:104333. doi: 10.1016/j.pdpdt.2024.104333. Epub 2024 Sep 7.
Hybrid ceramics bonding with the dentinal substrate is crucial for clinical success and longevity. To enhance adhesion, the surface of ceramic restorations is modified through various conditioning techniques AIM: Effect of Different Surface Conditioners Erbium-doped yttrium aluminum garnet (ER: YAG) laser and Low-level laser therapy (LLLT) activated Methylene blue (MB) on the surface roughness (Ra) and shear bond strength (SBS) of Polymer infiltrating ceramic network (PICN) discs bonded using different viscosity resin cement before and after thermal aging.
One hundred and fifty human central incisors and one hundred and fifty-three PICN discs were prepared. PICN discs were randomly allocated into three groups based on the surface conditioning(n = 51) Group 1:10 % HF acid-S, Group 2: LLLT (MB), and Group 3: Er: YAG laser. Following conditioning Ra scores of ten samples were performed. Surface topography of samples was performed using a scanning electron microscope (SEM). Bonding of forty PICN discs from each conditioning group was performed with high (A) or low viscosity (B) dual-curing resin cement (n = 20 each). Each subgroup was divided into two cohorts and subjected to varying storage conditions. The SBS test and failure mode analysis were performed using a universal testing machine and stereomicroscope. Descriptive statistics of SBS and Ra for each group were analyzed using ANOVA and Tukey post hoc tests. HF acid-S attained the highest Ra scores.
Group 1A (HF-S+HIGH) samples achieved the highest SBS values at baseline. Group 3A, on the other hand, displayed the lowest bond score (Er: YAG laser+HIGH) after thermal aging. Intergroup comparison analysis at baseline unveiled that Group 1A and Group 1B (HF(S) + LOW) displayed no significant difference in their bond strength scores (p>0.05). Following artificial aging, it was observed that Group 2A (LLLT (MB) + HIGH) and Group 3A (Er:YAG laser + HIGH) ) presented comparable SBS(p > 0.05). Thermal aging decreased SBS significantly in all groups. PICN conditioned with HF-S results in high surface roughness.
PICN conditioned with HF acid with silane and bonded with low-viscosity resin cement to the dentinal substrate is preferable. Aging influences SBS.
混合陶瓷与牙本质基质的结合对于临床成功和长期效果至关重要。为了增强附着力，通过各种处理技术来改变陶瓷修复体的表面。
探讨钇铝石榴石（Er:YAG）激光和低水平激光治疗（LLLT）激活亚甲蓝（MB）对聚合物渗透陶瓷网络（PICN）在热老化前后不同粘度树脂水门汀粘结的表面粗糙度（Ra）和剪切粘结强度（SBS）的影响。
制备 150 个人工中央门牙和 153 个 PICN 盘。根据表面处理（n = 51），将 PICN 盘随机分为三组：第 1 组：10% HF 酸-S，第 2 组：LLLT（MB），第 3 组：Er:YAG 激光。对十份样本进行处理后 Ra 值评分。使用扫描电子显微镜（SEM）对样品的表面形貌进行分析。用高粘度（A）或低粘度（B）双固化树脂水门汀（每组 20 个）将来自每个处理组的 40 个 PICN 盘粘结在一起。每个亚组分为两组，并进行不同的存储条件。使用万能试验机和立体显微镜进行 SBS 测试和失效模式分析。使用方差分析和 Tukey 事后检验对每组 SBS 和 Ra 的描述性统计数据进行分析。HF 酸-S 获得了最高的 Ra 值评分。
在基线时，第 1 组（HF-S+HIGH）的样本获得了最高的 SBS 值。另一方面，经过热老化后，第 3 组（Er:YAG 激光+HIGH）的粘结强度得分最低。基线时的组间比较分析显示，第 1 组和第 1 组（HF-S+LOW）的粘结强度评分无显著差异（p>0.05）。经过人工老化后，发现第 2 组（LLLT（MB）+HIGH）和第 3 组（Er:YAG 激光+HIGH）的 SBS 相当（p>0.05）。热老化显著降低了所有组的 SBS。HF-S 处理后的 PICN 表面粗糙度高。
HF 酸处理并用硅烷处理，并用低粘度树脂水门汀粘结到牙本质基底的 PICN 是优选的。老化会影响 SBS。
