Bioactivity of nitric acid and calcium chloride treated carbon-fibers reinforced polyetheretherketone for dental implant.

Jing Ma, Qian Liang, Wen Qin, Patrick Osei Lartey, Ying Li, Xiaojiang Feng

Journal of the mechanical behavior of biomedical materials 2020 Feb

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Carbon fiber reinforced Polyetheretherketone (PEEK) acquires mechanical strength which is close to human bone, but PEEK is inert, which can affect the bone fixation and osseointegration during dental implantation. To improve the bioactivity of PEEK, surface modification with nitric acid (HNO3) and calcium chloride (CaCl2) were utilized in this work. As the results, the hydrophilicity of the treated samples is significantly improved with the reduced roughness and attached nitro-functional group on its surface. The biological activity of CF/PEEK samples are enhanced by apatite formation evaluation soaking in simulated body fluid (SBF) in vitro after HNO3 and CaCl2 treatment. Moreover, the cytotoxicity experiments results confirm that surface treatment with HNO3 and CaCl2 is not harmful to the compatibility and safety of the cells. Copyright © 2019. Published by Elsevier Ltd.

Citation

Jing Ma, Qian Liang, Wen Qin, Patrick Osei Lartey, Ying Li, Xiaojiang Feng. Bioactivity of nitric acid and calcium chloride treated carbon-fibers reinforced polyetheretherketone for dental implant. Journal of the mechanical behavior of biomedical materials. 2020 Feb;102:103497