Salim Al-Ani Anas Aaqel, Mutluay Murat, Stape Thiago Henrique Scarabello, Tjäderhane Leo, Tezvergil-Mutluay Arzu
Finnish Doctoral Program in Oral Sciences (FINDOS), University of Turku, Institute of Dentistry.
Department of Cariology and Restorative Dentistry, Adhesive Dentistry Research Group, Institute of Dentistry, University of Turku.
Dent Mater J. 2018 Jun 8;37(3):501-505. doi: 10.4012/dmj.2017-213. Epub 2018 Mar 28.
The objective was to evaluate effect of dimethyl sulfoxide (DMSO) on microtensile bond strength (µTBS) and nanoleakage (NL). Superficial dentin was acid-etched and pretreated with DMSO. Etch-and-rinse adhesive was applied and restored with resin composite incrementally. After 24 h, teeth were sectioned, stored in artificial saliva for 24-h or 6-months before µTBS evaluation. Failure modes were examined. Six beams per group were submitted to nanoleakage evaluation using SEM. Data were analyzed using ANOVA and Tukey's test (α=0.05). Pretreatment had no significant effect on µTBS after 24 h (p>0.05). After 6 months storage, µTBS of control decreased significantly, more than with the groups treated with 0.01% or higher (p<0.05). DMSO-pretreated groups preserved µTBS in all groups. After 6-months, all groups except 0.001% showed significantly lower nanoleakege compared to control (p<0.05). DMSO (0.01-20%) may improve the hybrid layer integrity and bonding durability. The best results were seen with low (1-5%) of DMSO concentrations.
目的是评估二甲基亚砜（DMSO）对微拉伸粘结强度（µTBS）和纳米渗漏（NL）的影响。对牙本质表层进行酸蚀并用DMSO预处理。应用酸蚀冲洗粘结剂并用树脂复合材料逐层修复。24小时后，将牙齿切片，在进行µTBS评估前在人工唾液中保存24小时或6个月。检查失败模式。每组六根梁用扫描电子显微镜进行纳米渗漏评估。数据采用方差分析和Tukey检验进行分析（α=0.05）。预处理在24小时后对µTBS无显著影响（p>0.05）。储存6个月后，对照组的µTBS显著降低，比用0.01%或更高浓度处理的组降低得更多（p<0.05）。DMSO预处理组在所有组中均保留了µTBS。6个月后，除0.001%组外，所有组的纳米渗漏均显著低于对照组（p<0.05）。DMSO（0.01 - 20%）可改善混合层完整性和粘结耐久性。在低浓度（1 - 5%）的DMSO中观察到最佳结果。
