Signore Antonio, Solimei Luca, Arakelyan Marianna-Georgievna, Arzukanyan Alina-Vladimirova, De Angelis Nicola, Amaroli Andrea
Department of Therapeutic Dentistry, Institute of Dentistry, I.M. Sechenov First Moscow State Medical University, Moscow, Russian Federation.
Department of Surgical and Diagnostic Sciences (D.I.S.C.), University of Genoa, Genoa, Italy.
J Clin Exp Dent. 2021 Aug 1;13(8):e835-e844. doi: 10.4317/jced.58081. eCollection 2021 Aug.
Marginal seal of a nanohybrid bulk-fill composite compared to a nanohybrid conventional composite, using a universal adhesive (UA) applied in etch-and-rinse (ER) and self-etch (SE) mode was investigated.
Thirty-six intact molars were selected and two standardized cavities in each tooth were prepared and allocated into four groups according to restorative material and etching strategy. All samples were placed in a 1% methylene blue solution for 24 h, then cut in the middle of the restorations obtaining two parts (n=144) and used for microscopic evaluation (50x) for dye penetration measurements.
The data were analysed by ANOVA and Tukey post-hoc test (<0.05). Marginal seal was influenced by adhesive strategy (<0.05) but not from the composite used (>0.05).
Simplified restorations with nanohybrid bulk-fill composite showed comparable marginal leakage to incrementally placed nanohybrid composite. The UA used with a ER technique resulted in better marginal seal irrespective of the restorative material used. Bulk-fill composite, universal adhesive, self-etching, etch-and-rinse, marginal seal.
研究了使用通用粘合剂（UA）以酸蚀冲洗（ER）和自酸蚀（SE）模式应用时，纳米混合大块充填复合树脂与纳米混合传统复合树脂的边缘密封性。
选择36颗完整磨牙，每颗牙制备两个标准化窝洞，并根据修复材料和酸蚀策略分为四组。所有样本置于1%亚甲蓝溶液中24小时，然后在修复体中部切开得到两部分（n = 144），用于显微镜评估（50倍）以测量染料渗透。
数据采用方差分析和Tukey事后检验（<0.05）进行分析。边缘密封性受粘合剂策略影响（<0.05），但不受所用复合树脂影响（>0.05）。
使用纳米混合大块充填复合树脂进行的简化修复显示出与分层放置的纳米混合复合树脂相当的边缘渗漏。无论使用何种修复材料，采用酸蚀冲洗技术使用的通用粘合剂都能产生更好的边缘密封性。大块充填复合树脂、通用粘合剂、自酸蚀、酸蚀冲洗、边缘密封性。
