Yeslam Hanin E, Alqahtani Hazzaa H, Filemban Aws M, Jiffri Sultan O, Tashkandi Abeer K
Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah P.O. Box 80200, Saudi Arabia.
Advanced Technology Dental Research Laboratory, King Abdulaziz University, Jeddah P.O. Box 80209, Saudi Arabia.
Polymers (Basel). 2025 Apr 29;17(9):1216. doi: 10.3390/polym17091216.
High-performance fiber-reinforced technopolymers for computer-aided design/computer-aided manufacturing (CAD/CAM) of dental restorations offer superior durability and strength. However, exposure to acidic solutions may adversely affect these mechanical properties.
This study aimed to evaluate the flexural properties of a high-strength commercially available CAD/CAM fiber-reinforced dental material in response to water, cola, and artificial gastric acid solutions.
Forty bar-shaped specimens (1 × 4 × 13 mm) were fabricated from a pre-polymerized glass fiber-reinforced composite (Trilor disks, Bioloren, Saronno, Italy). Ten specimens were randomly selected for baseline testing. The remaining specimens were subdivided into three groups based on the storage media (n = 10): artificial gastric acid solution, Coca-Cola, and deionized water (37 °C, 48 h). Mean flexural strengths and moduli were statistically compared at a significance level of < 0.05.
No statistically significant change in flexural strength was observed after immersion in the different media. However, there was a statistically significant decrease in the flexural modulus after storage for 48 h, regardless of pH.
Fiber-reinforced CAD/CAM technopolymers show promising strength stability in response to varying pH conditions. However, further studies are needed to investigate the material's long-term strength stability.
用于牙科修复体计算机辅助设计/计算机辅助制造（CAD/CAM）的高性能纤维增强工程聚合物具有卓越的耐久性和强度。然而，暴露于酸性溶液中可能会对这些机械性能产生不利影响。
本研究旨在评估一种高强度市售CAD/CAM纤维增强牙科材料在水、可乐和人工胃酸溶液作用下的弯曲性能。
用预聚合玻璃纤维增强复合材料（Trilor盘，Bioloren，意大利萨罗诺）制作40个条形试件（1×4×13毫米）。随机选取10个试件进行基线测试。其余试件根据储存介质分为三组（n = 10）：人工胃酸溶液、可口可乐和去离子水（37°C，48小时）。在显著性水平<0.05下对平均弯曲强度和模量进行统计学比较。
浸泡在不同介质中后，弯曲强度未观察到统计学上的显著变化。然而，无论pH值如何，储存48小时后弯曲模量均有统计学上的显著降低。
纤维增强CAD/CAM工程聚合物在不同pH条件下显示出良好的强度稳定性。然而，需要进一步研究来调查该材料的长期强度稳定性。
