Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil; University Centre Integrated Faculties of Ourinhos, Ourinhos, SP, Brazil.
J Dent. 2024 Dec;151:105379. doi: 10.1016/j.jdent.2024.105379. Epub 2024 Sep 26.
This study aimed to evaluate how self-etching/universal dental adhesive systems (DASs) with differing compositions interact with sound (S), post-radiotherapy (irradiated; I), and artificially eroded (E) dentin in terms of bonding properties.
The DASs tested were Adper Scotchbond Multipurpose (MP; control), Clearfil SE Bond (SE), FL Bond II (FL), Adper Single Bond Universal (SU) and BeautiBond Xtreme (BX). They were analyzed for initial and 6-month microtensile bond strength (µTBS, n = 12), mode of failure (40 x), scanning electron microscopy (SEM), surface wettability (W, n = 10), and degree of conversion (DC, n = 3) via Fourier-transform infrared spectroscopy (FTIR). Normal and homogeneous distribution of the data allowed their analyses through ANOVA and Tukey tests (p < 0.05).
All DASs except BX exhibited higher µTBS for S decreasing for I and E. BX demonstrated the greatest stability among the altered substrates. FL showed the most hydrophobic properties, likely due to its bioactive components. Universal DASs achieved higher DC, regardless of composition.
HEMA-free formulation combined with carboxylic and phosphoric acids in BX, achieved the most stable performance for altered substrates.
Since radiotherapy and erosion affect dentin, their characteristics compromise adhesive performance and impair the achievement of durable and satisfactory restorations. The use of universal adhesives less dependent on calcium seems less susceptible to hydrolytic degradation and may be a promising option for maintaining adhesive stability over time.
本研究旨在评估具有不同成分的自酸蚀/通用牙本质粘结剂系统（DAS）在粘结性能方面与正常（S）、放疗后（辐照；I）和人工酸蚀（E）牙本质的相互作用。
测试的 DAS 有 Adper Scotchbond Multipurpose（MP；对照）、Clearfil SE Bond（SE）、FL Bond II（FL）、Adper Single Bond Universal（SU）和 BeautiBond Xtreme（BX）。对它们进行初始和 6 个月微拉伸粘结强度（µTBS，n = 12）、失效模式（40 x）、扫描电子显微镜（SEM）、表面润湿性（W，n = 10）和傅里叶变换红外光谱（FTIR）的转化率（DC，n = 3）分析。数据的正态和均匀分布允许通过 ANOVA 和 Tukey 检验（p < 0.05）进行分析。
除 BX 外，所有 DAS 在 S 下的 µTBS 较高，在 I 和 E 下降低。BX 在改变的基质中表现出最大的稳定性。FL 表现出最疏水的特性，可能是由于其生物活性成分。通用 DAS 无论组成如何都能达到更高的 DC。
不含 HEMA 的配方与 BX 中的羧酸和磷酸结合，在改变的基质中实现了最稳定的性能。
由于放疗和侵蚀会影响牙本质，它们的特性会影响粘结性能，并损害获得持久和满意的修复体。使用对钙依赖性较小的通用粘结剂可能不易发生水解降解，并且可能是维持粘结剂稳定性随时间推移的有前途的选择。
