Nafisifard Maliheh, Alaghehmand Homayoon, Soleimani Laleh, Mokhtarpour Faraneh
Dental Materials Research Center, Student Research Committee, Babol University of Medical Sciences, Babol, Iran.
Dental Materials Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.
Dent Res J (Isfahan). 2024 Feb 22;21:19. eCollection 2024.
This study assessed the effect of different concentrations of 4-methacryloyloxyethy trimellitate anhydride (4-META) added to silane on microtensile bond strength (µTBS) of light-cure and dual-cure resin cement to hybrid and zirconia-reinforced lithium silicate ceramics.
This , experimental study was conducted on 32 Celtra Duo and 32 VITA Enamic ceramics bonded to Allcem Veneer light-cure and Allcem dual-cure resin cements using silane impregnated with 4-META in 0%, 2.5%, 5%, and 10 wt% concentrations in 16 groups ( = 4). The µTBS of specimens was measured by a universal testing machine and analyzed by the Kruskal-Wallis and Mann-Whitney tests, and the mode of failure was determined under a stereomicroscope and analyzed by the Chi-square test (alpha = 0.05).
The lowest mean µTBS was recorded in the Enamic ceramic group with 4-META (0%) bonded to dual-cure cement (14.26 MPa), and the highest mean µTBS was recorded in Enamic ceramic with 4-META (10%) bonded to light-cure cement (18.59 MPa) ( < 0.001). The µTBS of Celtra Duo was significantly higher than that of Enamic in bonding to light-cure cement using 4-META (2.5%) ( = 0.003). All failures (100%) were adhesive in most groups. The frequency of adhesive failure was the lowest (90%) in Celtra Duo bonded to dual-cure cement with 4-META (5%).
According to the results of this pilot study, the addition of 4-META (10%) to silane caused a significant improvement in µTBS to light-cure cement. The addition of 4-META in all concentrations significantly improved the µTBS to Enamic ceramic in the use of dual-cure cement; however, it had no significant effect on µTBS of Celtra Duo. Nonetheless, the results should be interpreted with caution due to the relatively small sample size.
本研究评估了添加到硅烷中的不同浓度的偏苯三酸三（4-甲基丙烯酰氧基乙酯）（4-META）对光固化和双重固化树脂水门汀与混合陶瓷及氧化锆增强型硅酸锂陶瓷之间微拉伸粘结强度（µTBS）的影响。
本实验研究使用含0%、2.5%、5%和10 wt%浓度4-META的硅烷浸渍液，将32块Celtra Duo陶瓷和32块VITA Enamic陶瓷分别与Allcem Veneer光固化树脂水门汀和Allcem双重固化树脂水门汀粘结，分为16组（每组n = 4）。通过万能试验机测量试样的µTBS，并采用Kruskal-Wallis检验和Mann-Whitney检验进行分析，在体视显微镜下确定失效模式，并采用卡方检验进行分析（α = 0.05）。
在双重固化水门汀粘结的含4-META（0%）的Enamic陶瓷组中记录到最低平均µTBS（14.26 MPa），在光固化水门汀粘结的含4-META（10%）的Enamic陶瓷组中记录到最高平均µTBS（18.59 MPa）（P < 0.001）。在使用含4-META（2.5%）的硅烷浸渍液粘结光固化水门汀时，Celtra Duo陶瓷的µTBS显著高于Enamic陶瓷（P = 0.003）。大多数组中所有失效（100%）均为粘结性失效。在含4-META（5%）的双重固化水门汀粘结的Celtra Duo陶瓷中，粘结性失效频率最低（90%）。
根据本初步研究结果，向硅烷中添加4-META（10%）可显著提高与光固化水门汀之间的µTBS。在使用双重固化水门汀时，添加所有浓度的4-META均可显著提高与Enamic陶瓷之间的µTBS；然而，对Celtra Duo陶瓷的µTBS无显著影响。尽管如此，由于样本量相对较小，结果应谨慎解读。
