Koppolu Pradeep, Qamar Zeeshan, Abdul Nishath Sayed, Shenoy Mahesh, Reddy R Naveen, Kakti Ateet, Barakat Ali Abdulmajeed, Niazi Fayez Hussain
Department of Preventive Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia.
Department of OMFS and Diagnostic Sciences, Faculty of Dentistry, Riyadh Elm University, Riyadh, Saudi Arabia, and Department of Oral Biology, Liaquat College of Medicine and Dentistry, Karachi, Pakistan.
Photodiagnosis Photodyn Ther. 2022 Sep;39:102885. doi: 10.1016/j.pdpdt.2022.102885. Epub 2022 Apr 27.
The present study aimed to appraise the effect of Diode laser (DL), riboflavin, and curcumin on the bond strength of adhesive restorative material and the effects of pretreatment on microleakage scores.
Ninety caries-free human permanent premolars were obtained and disinfected. All specimens were mounted till CEJ. To provide standardization, a 2 × 2 mm flat non-carious cervical lesion (NCCL) dentin surface was exposed. This was followed by dentin surface roughening/cervical groove preparation with a round bur. After tooth surface preparation, ninety specimens were divided arbitrarily into three groups. Group 1: NCCL exposed to DL; group 2: NCCL pretreated with riboflavin photosensitizer (RFP) and group 3 pretreated with curcumin photosensitizer (CP). All the three groups were further divided into two subgroups A1, A2, B1, B2, C1, and C2 based on the restorative material used (n = 15). Subgroup A1, B1, and C1 were restored with composite resin (CR). Subgroup A2, B2, and C2 were restored with RMGIC. Ten samples from each subgroup were evaluated for shear bond strength (SBS) testing under a universal testing machine (UTM). Five from each subgroup were evaluated for microleakage assessment. Bond strength and microleakage analysis were performed using analysis of variance (ANOVA) with a Post-hoc test (Tukey's post hoc test) at a significance level (p = 0.05).
The group A1, DL-CR shows the highest SBS (16.41± 0.4 MPa). However, CP-RMGIC groups demonstrated the lowest bond integrity. RFP-CR and the DL-CR group displayed comparable outcomes of SBS (p>0.05). The highest microleakage was observed with CP-RMGIC. The least microleakage was displayed by DL-CR.
Noncarious cervical lesions pretreated with diode laser and riboflavin photosensitizer showed better shear bond strength and reduced microleakage when bonded to composite resin than non-carious cervical lesions pretreated with curcumin.
本研究旨在评估二极管激光（DL）、核黄素和姜黄素对粘结性修复材料粘结强度的影响以及预处理对微渗漏评分的影响。
获取90颗无龋的人类恒牙前磨牙并进行消毒。将所有标本安装至牙釉质牙骨质界（CEJ）。为实现标准化，暴露2×2mm的平坦无龋颈部病变（NCCL）牙本质表面。随后用圆钻对牙本质表面进行粗糙化处理/制备颈部沟。牙齿表面处理后，将90个标本随机分为三组。第1组：NCCL暴露于DL；第2组：NCCL用核黄素光敏剂（RFP）预处理，第3组用姜黄素光敏剂（CP）预处理。根据所使用的修复材料，所有三组进一步分为两个亚组A1、A2、B1、B2、C1和C2（n = 15）。亚组A1、B1和C1用复合树脂（CR）修复。亚组A2、B2和C2用树脂改性玻璃离子水门汀（RMGIC）修复。在万能试验机（UTM）下对每个亚组的10个样本进行剪切粘结强度（SBS）测试评估。对每个亚组的5个样本进行微渗漏评估。使用方差分析（ANOVA）和事后检验（Tukey事后检验）在显著性水平（p = 0.05）下进行粘结强度和微渗漏分析。
A1组，即DL-CR组显示出最高的SBS（16.41±0.4MPa）。然而，CP-RMGIC组表现出最低的粘结完整性。RFP-CR组和DL-CR组显示出相当的SBS结果（p>0.05）。CP-RMGIC组观察到最高的微渗漏。DL-CR组显示出最少的微渗漏。
与用姜黄素预处理的无龋颈部病变相比，用二极管激光和核黄素光敏剂预处理的无龋颈部病变在粘结复合树脂时显示出更好的剪切粘结强度并减少了微渗漏。
