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Enhanced mechanical properties and biosafety evaluation of surface-modified fiberglass-reinforced resin-based composite piles

  • Biomaterials Synthesis and Characterization
  • Original Research
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Journal of Materials Science: Materials in Medicine Aims and scope Submit manuscript

Abstract

The purpose of this study is to analyze various surface grafting modifications of fiberglass-reinforced resin based composite piles. In addition, the effects of surface modifications of fiberglass-reinforced resin piles in terms of biosafety and mechanical strength were studied. According to different surface treatment methods, the fiberglass was divided into five groups (A–E): a blank control group, a KH570 processing group, a KH570 processing+Bis-GMA grafting 1 h group, a KH570 processing+Bis-GMA grafting 3 h group and a KH570 processing+Bis-GMA grafting 7 h group. All surface-treated materials were characterized using scanning electron microscope, thermogravimetric analyses and Fourier transform infrared spectrum and mechanical testing using a universal mechanical tester. The biosafety was evaluated by cell viability experiments and repeated oral toxicity tests and Ames tests. The Bis-GMA grafting modification further enhanced the mechanical properties of resin piles. By increasing the grafting time, the grafting effect and mechanical properties were further enhanced. The surfaces grafted for 7 h (Group E) remarkably improved the mechanical properties (flexural strength ~696.24 MPa; flexural load ~185.67N). The graft modifications improved the mechanical properties of fiber pile resin-based materials. The prolonged grafting time further improved the mechanical properties corresponding to enhanced grafting and the formation of a stable interface between fibers and the resin matrix. The surface-modified dental resin-based fiber did not show any signs of toxicity, cytotoxicity or mutagenicity, suggesting the potential biological safety of these materials in the clinical practice.

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Acknowledgements

This study was supported by grants from the National Key Research and Development Program of China (2016YFA0201704/2016YFA0201700), the National Natural Science Foundation of China (81701025), Postdoctoral Foundation of Jiangsu (1701163B) and the Priority Academic Program Development of Jiangsu Higher Education Institutions (2014–37).

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Authors and Affiliations

  1. Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 136 Hanzhong Road, Nanjing, 210029, Jiangsu, China

    Xiaokun Hu, Mei Liu, Yu Ji, Lili Wang & Feimin Zhang

  2. Chairman Unit of Dental Professional Committee of Wuxi Medical Association, Wuxi, 214001, Jiangsu, China

    Yueming Du

  3. State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu, China

    Xuefeng Zhou

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  1. Xiaokun Hu
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  2. Mei Liu
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  5. Lili Wang
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Correspondence to Feimin Zhang.

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These authors contributed equally: Mei Liu, Xiaokun Hu

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Hu, X., Liu, M., Ji, Y. et al. Enhanced mechanical properties and biosafety evaluation of surface-modified fiberglass-reinforced resin-based composite piles. J Mater Sci: Mater Med 30, 70 (2019). https://doi.org/10.1007/s10856-019-6269-z

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