Hydroxyapatite modified with polyhedral oligomeric silsesquioxane as a filler for dental resin-based composites

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research Pub Date : 2024-07-09 DOI:10.1557/s43578-024-01385-7

Zuzanna Buchwald, Tomasz Buchwald, Adam Voelkel

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Abstract

Hydroxyapatite modified with methacrylate groups-bearing polyhedral oligomeric silsesquioxane was for the first time applied as a filler in the experimental composite for dental applications. As the modifier changed the hydroxyapatite surface from hydrophilic to hydrophobic, it was predicted that the stability of the obtained composites would be improved in comparison with raw hydroxyapatite-filled composites. The stability in the oral imitating environment, basic physicochemical properties, and remineralizing potential understood as the ability to release calcium ions, were examined. The distribution of the fillers in the organic matrix, composites’ degree of conversion, depth of cure, flexural and compressive strengths, sorption, and solubility after 2 and 12 weeks of incubation, and the concentrations of calcium released were examined. The results were subjected to statistical analysis. The filler modification resulted in the improvement of the composites’ mass stability during long-term incubation with simultaneous beneficial more balanced calcium release profiles and comparable physicochemical properties.

Graphical abstract

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用多面体低聚硅倍半氧烷改性的羟基磷灰石作为牙科树脂基复合材料的填料

羟基磷灰石经含甲基丙烯酸酯基团的多面体低聚硅倍半氧烷改性后，首次被用作牙科应用实验复合材料的填料。由于改性剂将羟基磷灰石的表面从亲水性变为疏水性，因此与未加工的羟基磷灰石填充复合材料相比，所获得复合材料的稳定性预计会有所提高。研究考察了其在口腔模拟环境中的稳定性、基本物理化学特性以及再矿化潜力（即释放钙离子的能力）。在培养 2 周和 12 周后，对填料在有机基质中的分布、复合材料的转化程度、固化深度、抗弯强度和抗压强度、吸附性和溶解度以及释放的钙浓度进行了研究。对结果进行了统计分析。填料改性提高了复合材料在长期培养过程中的质量稳定性，同时有利于更均衡的钙释放曲线和可比的理化特性。

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来源期刊

Journal of Materials Research 工程技术-材料科学：综合

CiteScore

4.50

自引率

3.70%

发文量

362

审稿时长

2.8 months

期刊介绍： Journal of Materials Research (JMR) publishes the latest advances about the creation of new materials and materials with novel functionalities, fundamental understanding of processes that control the response of materials, and development of materials with significant performance improvements relative to state of the art materials. JMR welcomes papers that highlight novel processing techniques, the application and development of new analytical tools, and interpretation of fundamental materials science to achieve enhanced materials properties and uses. Materials research papers in the following topical areas are welcome. • Novel materials discovery • Electronic, photonic and magnetic materials • Energy Conversion and storage materials • New thermal and structural materials • Soft materials • Biomaterials and related topics • Nanoscale science and technology • Advances in materials characterization methods and techniques • Computational materials science, modeling and theory