Lopes-Rocha Lígia, Torres Orlanda, Garcez Joana, Carbas Ricardo J C, Borges Catarina, Gonçalves Vírginia M F, Tiritan Maria Elizabeth, Medeiros Igor Studart, Pinho Teresa, da Silva Lucas F M
UNIPRO-Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS-CESPU), 4585-116 Gandra, Portugal.
Department of Mechanical Engineering, Faculty of Engineering (FEUP), University of Porto, Dr. Roberto Frias Street, 4200-465 Porto, Portugal.
Materials (Basel). 2025 Jun 9;18(12):2704. doi: 10.3390/ma18122704.
(1) Background: The work aims to determine different chemical and mechanical properties with and without BPA dental resin-matrix composites under the same curing and testing conditions. (2) Methods: Disc-shaped specimens were prepared from six resin-matrix composites used in dentistry, three with BPA (BE-Brilliant EverGlow, ED-IPS Empress Direct, FS-Filtek Supreme XTE) and three without (AF-Admira Fusion, BF-Enamel Plus HRi Bio Function Enamel, N/C). Specimens were photoactivated using an LED light-curing unit. The chemical and mechanical properties were analysed. (3) Results: The FS group exhibited the most significant water sorption (31.17 µg/mm), while the BF showed the lowest (12.23 µg/mm). Regarding the diffusion coefficient, the result recorded for the group AF is faster-absorbing water, and the group NC is slower. In both test methods (biaxial flexural strength and compressive strength), the resistance to flexural loading of the AF group was significantly lower than all other resin composites evaluated. (4) Conclusions: According to all the parameters studied, we verified that the BF presents the best chemical-mechanical behaviour. Resins free of BPA may not influence chemical-mechanical performance. However, the inorganic matrix has more influence on mechanical properties than the organic matrix.
(1) 背景：本研究旨在确定在相同固化和测试条件下，含双酚A（BPA）和不含双酚A的牙科树脂基复合材料的不同化学和机械性能。(2) 方法：从六种牙科用树脂基复合材料制备圆盘形试样，三种含双酚A（BE - 璀璨恒亮、ED - IPS Empress Direct、FS - Filtek Supreme XTE），三种不含双酚A（AF - 阿迪拉融合、BF - 釉质增强HRi生物功能釉质、N/C）。使用LED光固化机对试样进行光固化。分析其化学和机械性能。(3) 结果：FS组表现出最显著的吸水率（31.17 µg/mm），而BF组最低（12.23 µg/mm）。关于扩散系数，AF组记录的结果表明其吸水较快，NC组较慢。在两种测试方法（双轴弯曲强度和抗压强度）中，AF组的抗弯曲载荷能力明显低于所有其他评估的树脂复合材料。(4) 结论：根据所有研究参数，我们证实BF表现出最佳的化学 - 机械性能。不含双酚A的树脂可能不会影响化学 - 机械性能。然而无机基质对机械性能的影响比有机基质更大。
