Moharam Lamiaa M, Salem Haidy N, Abdou Ahmed, Afifi Rasha H
Restorative and Dental Materials Department, Oral and Dental Research Institute, National Research Centre, Dokki, Giza, 12622, Egypt.
Operative Dentistry Department, Faculty of Oral and Dental Medicine, Nahda University, Beni Suef, Egypt.
BMC Oral Health. 2025 Jan 15;25(1):66. doi: 10.1186/s12903-024-05390-4.
This study aimed to assess the influence of different pretreatment protocols and antioxidants application on the shear bond strength (SBS) of universal adhesive to sound (SoD) and caries-induced dentin (CID).
One hundred and twenty posterior teeth had their occlusal enamel removed, then the specimens were divided into two main groups according to dentin substrates; SoD and CID, three subgroups according to pretreatments protocols control (no pretreatment), NaOCl-treated, and Er, Cr:YSGG-treated and two divisions according to antioxidant application (with and without sodium ascorbate (SA) application). All-Bond Universal (ABU) universal adhesives was applied in self-etch (SE) mode then resin composite discs were built. The specimens were stored in distilled water for 24-hr at 37°C before SBS testing. Three-way ANOVA and Tukey HSD tests were used for data analysis (a = 0.05).
6% NaOCl resulted in a significant reduction in SBS in SoD without antioxidant application. 10% SA application showed significant increase in SBS for 6% NaOCl group only in SoD. Laser application recorded a significantly higher SBS compared to 6% NaOCl group without or with antioxidant application, while 10% SA application revealed a significant increase in SBS for control group only.
Er, Cr:YSGG laser irradiation followed by antioxidant application has the potential to enhance the bonding quality of both tested dentin substrates. NaOCl application has significantly compromised the bonding to SoD and CID substrates.
本研究旨在评估不同预处理方案和抗氧化剂应用对通用粘合剂与健康牙本质（SoD）和龋源性牙本质（CID）之间剪切粘结强度（SBS）的影响。
120颗后牙去除咬合面釉质，然后根据牙本质基质将标本分为两个主要组；SoD和CID，根据预处理方案分为三个亚组：对照组（无预处理）、次氯酸钠处理组和铒铬：钇铝石榴石激光处理组，根据抗氧化剂应用分为两个组（使用和不使用抗坏血酸钠（SA））。采用全粘结通用型（ABU）通用粘合剂自酸蚀（SE）模式，然后构建树脂复合盘。在进行SBS测试前，将标本在37℃蒸馏水中储存24小时。采用三因素方差分析和Tukey HSD检验进行数据分析（α = 0.05）。
在未使用抗氧化剂的SoD中，6%的次氯酸钠导致SBS显著降低。仅在SoD中，10%的SA应用显示6%次氯酸钠组的SBS显著增加。与未使用或使用抗氧化剂的6%次氯酸钠组相比，激光处理记录的SBS显著更高，而10%的SA应用仅显示对照组的SBS显著增加。
铒铬：钇铝石榴石激光照射后应用抗氧化剂有可能提高两种测试牙本质基质的粘结质量。次氯酸钠的应用显著损害了与SoD和CID基质的粘结。
