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- W4313644979 endingPage "111607" @default.
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- W4313644979 abstract "The increasing demand for enhanced osteointegration calls for next-generation polyetheretherketone (PEEK) that can offer fast bone integration. Whether polydopamine (PDA) and epigallocatechin-3-gallate (EGCG) cross-linked coatings could improve osteointegration of PEEK remains unclear. Here, we fabricated a series of PDA and EGCG cross-linked coatings (PE coatings: P2E0.1, P2E0.5, P2E1, and P2E2 coatings) to enhance osteointegration of PEEK. The material characteristics of coatings were studied using scanning electron microscopy, X-ray photoelectron spectroscopy, micro-BCA tests, and static water contact angle tests. We evaluated the cytotoxicity, cell adhesion, and osteogenic effects of the coatings in vitro. Furthermore, the P2E0.5 coating was selected to coat porous PEEK scaffold to observe osteointegration using micro-computed tomography and histology in a rabbit. The results show that the PE coatings provide phenolic hydroxyl and amino groups and enhanced hydrophilicity of PEEK, especially in the P2E0.5 coating. Several lines of cellular evidence suggest that P2E0.5 coatings exhibit a noncytotoxic and excellent osteogenic effect. Compared with PEEK, the P2E0.5-coated PEEK shows higher values of bone volume, trabecular number, and trabecular thickness. This study suggests that the PE coating is a promising candidate for surface modification of PEEK and may lay the foundation for further application of PE coatings in clinical practice." @default.
- W4313644979 created "2023-01-07" @default.
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- W4313644979 date "2023-02-01" @default.
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- W4313644979 title "Dopamine and epigallocatechin-3-gallate cross-linked coating demonstrates improved osteointegration of polyetheretherketone in rabbits" @default.
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- W4313644979 doi "https://doi.org/10.1016/j.matdes.2023.111607" @default.
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