Eggenhöffner Roberto, Ghisellini Paola, Rando Cristina, Pechkova Eugenia, Terencio Tercio, Mazzolai Barbara, Giacomelli Luca, Barbaro Katia, Benedicenti Stefano
Department of Surgical Sciences and Integrated Diagnostics (DISC), Genova University, Corso Europa 30, 16132 Genova, Italy.
Biostructures and Biosystems National Institute, Viale delle Medaglie D'Oro 305, 00136 Rome, Italy.
Biomedicines. 2023 Jul 7;11(7):1926. doi: 10.3390/biomedicines11071926.
The possibility of improving dental restorative materials is investigated through the addition of two different types of fillers to a polymeric resin. These fillers, consisting of porous alumina and TiO nanotubes, are compared based on their common physicochemical properties on the nanometric scale. The aim was to characterize and compare the surface morphological properties of composite resins with different types of fillers using analytical techniques. Moreover, ways to optimize the mechanical, surface, and aesthetic properties of reinforced polymer composites are discussed for applications in dental treatments. Filler-reinforced polymer composites are the most widely used materials in curing dental pathologies, although it remains necessary to optimize properties such as mechanical resistance, surface characteristics, and biocompatibility. Anodized porous alumina nanoparticles prepared by electrochemical anodization offer a route to improve mechanical properties and biocompatibility as well as to allow for the controlled release of bioactive molecules that can promote tissue integration and regeneration. The inclusion of TiO nanotubes prepared by hydrothermal treatment in the resin matrix promotes the improvement of mechanical and physical properties such as strength, stiffness, and hardness, as well as aesthetic properties such as color stability and translucency. The surface morphological properties of composite resins with anodized porous alumina and TiO nanotube fillers were characterized by Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), and X-ray chemical analysis. In addition, the stress-strain behavior of the two composite resins is examined in comparison with enamel and dentin.
通过向聚合物树脂中添加两种不同类型的填料来研究改进牙科修复材料的可能性。这些填料由多孔氧化铝和TiO纳米管组成，根据它们在纳米尺度上的共同物理化学性质进行比较。目的是使用分析技术表征和比较具有不同类型填料的复合树脂的表面形态特性。此外，还讨论了优化增强聚合物复合材料的机械、表面和美学性能以用于牙科治疗的方法。填料增强聚合物复合材料是治疗牙齿疾病时使用最广泛的材料，不过仍有必要优化诸如机械抗性、表面特性和生物相容性等性能。通过电化学阳极氧化制备的阳极氧化多孔氧化铝纳米颗粒提供了一种改善机械性能和生物相容性的途径，还能实现生物活性分子的可控释放，从而促进组织整合和再生。将通过水热处理制备的TiO纳米管包含在树脂基体中，可促进机械和物理性能（如强度、刚度和硬度）以及美学性能（如颜色稳定性和透明度）的改善。用原子力显微镜（AFM）、扫描电子显微镜（SEM）和X射线化学分析对具有阳极氧化多孔氧化铝和TiO纳米管填料的复合树脂的表面形态特性进行了表征。此外，还将两种复合树脂的应力-应变行为与牙釉质和牙本质进行了比较研究。
