Department of O&MFS and Diagnostic Sciences, Faculty of Dentistry, Riyadh Elm University, Riyadh, Saudi Arabia.
Department of OMFS and Diagnostic Sciences (Oral Pathology), Faculty of Dentistry, Riyadh Elm University, Riyadh, Saudi Arabia.
Photodiagnosis Photodyn Ther. 2023 Sep;43:103636. doi: 10.1016/j.pdpdt.2023.103636. Epub 2023 May 27.
Assessment of micro tensile bond strength (microTBS) and micro-leakage scores of total-etch adhesive (TAE) and self-etch adhesive (SAE) bonded to carious affected dentin (CAD) sterilized using different cavity disinfectant (curcumin photosensitizer (CP) and malachite green (MG) and Chlorhexidine (CHX) in comparison to no disinfection (ND) control group.
One hundred and twenty human molars having International Caries Detection and Assessment System (ICDAS) scores of 4 and 5 were included. Visual inspection, dental explorer hardness testing, and caries detector solution using 5% basic Fuchsin dye solution was applied to dentin to identify the CAD surface. All the specimens were divided into four groups (n = 30) according to the cavity disinfectants used. Group A: 2% CHX, Group B: CP, Group C: MG, and Group D: ND. Each group was further divided into two subgroups (n = 15) based on the adhesion protocol. Groups A1, B1, C1, and D1 were held using TEA, and groups A2, B2, C2, and D2 were adhered using SEA system. The composite material was then built in 2 mm increments and then cured with light. MicroTBS and failure mode assessment using a universal testing machine (UTM) and stereomicroscope at a 40X magnification was performed on 10 samples from each subgroup. The microleakage assessment was performed using a dye penetration test on five samples from each group. ANOVA and Tukey post-hoc tests were used to compare means and standard deviation (SD) of bond strength and microleakage (p < 0.05). RESULTS The maximum microTBS was displayed by A1= CHX and TEA (13.28± 1.01 MPa). The lowest bond scores were demonstrated by C2= MG and SEA (5.98±0.44 MPa). The highest micro-leakage was exhibited by C1= MG and TEA (58.32 ± 2.11 nm). Whereas, the lowest micro-leakage values were displayed by A2= CHX and SEA (24.34± 1.11 nm).
Chlorohexidiene displayed better bond strength and the lowest microleakage scores with Total-etch adhesive and Self-etch adhesives when used as a cavity disinfectant. Total-etch adhesives performed better in terms of microTBS scores whereas self-etch adhesives displayed superior seal ability within the same disinfectant group.
评估总酸蚀粘结剂（TAE）和自酸蚀粘结剂（SAE）在经不同窝洞消毒剂（姜黄素光敏剂（CP）、孔雀石绿（MG）和洗必泰（CHX）处理的龋损牙本质（CAD）上的微拉伸粘结强度（microTBS）和微渗漏评分，并与未消毒（ND）对照组进行比较。
纳入 120 颗具有 ICDAS 评分 4 和 5 的人磨牙。使用 5%碱性品红染料溶液对牙本质进行视觉检查、牙探硬度测试和龋探测剂溶液检测，以确定 CAD 表面。根据使用的窝洞消毒剂，所有标本均分为四组（n=30）。A 组：2%CHX，B 组：CP，C 组：MG，D 组：ND。每组进一步根据粘结方案分为两个亚组（n=15）。A1、B1、C1 和 D1 组使用 TAE 固定，A2、B2、C2 和 D2 组使用 SEA 系统固定。然后以 2mm 的增量构建复合材料，并用光固化。从每个亚组的 10 个样本中进行微拉伸强度和失效模式评估，使用万能试验机（UTM）和立体显微镜在 40X 放大倍数下进行。从每组的 5 个样本中进行微渗漏评估，使用染料渗透测试。采用方差分析和 Tukey 事后检验比较各组间和各组内的粘结强度和微渗漏均值和标准差（p<0.05）。
A1=CHX 和 TAE 的 microTBS 值最大（13.28±1.01MPa）。C2=MG 和 SEA 的粘结强度最低（5.98±0.44MPa）。C1=MG 和 TAE 的微渗漏最高（58.32±2.11nm）。而 A2=CHX 和 SEA 的微渗漏值最低（24.34±1.11nm）。
氯己定作为窝洞消毒剂时，与全酸蚀粘结剂和自酸蚀粘结剂联合使用时显示出较好的粘结强度和最低的微渗漏评分。全酸蚀粘结剂在 microTBS 评分方面表现更好，而自酸蚀粘结剂在同一消毒剂组内显示出更好的密封能力。
