Long-lasting renewable antibacterial porous polymeric coatings enable titanium biomaterials to prevent and treat peri-implant infection.

Long-lasting renewable antibacterial porous polymeric coatings enable titanium biomaterials to prevent and treat peri-implant infection.
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持久的可再生抗菌多孔聚合物涂层使钛生物材料能够预防和治疗种植体周围感染

DOI:
10.1038/s41467-021-23069-0
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发表时间:
2021-06-03
影响因子:
16.6
通讯作者:
Li Y
Li Y
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Wu S;Xu J;Zou L;Luo S;Yao R;Zheng B;Liang G;Wu D;Li Y

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种植体周围感染是影响种植体成功的主要因素之一。现有钛表面涂层的抗菌效果迅速下降,难以有效预防种植体周围感染。在此,我们报告了钛表面的N-卤胺聚合物涂层,该涂层同时具有持久的可再生抗菌功效以及良好的稳定性和生物相容性。我们的涂层对种植体周围感染的主要致病菌和种植体周围炎患者的复合细菌都具有强大的杀菌作用。更重要的是,它的抗菌功效可以持续很长时间(例如,12~16周)在体外、动物模型中,甚至在人口腔中,一般涵盖了骨结合界面形成的全过程。此外,在消费后,它可以通过简单的再氯化恢复其抗菌能力,突出了可再生抗菌涂层在牙科植入物中的价值概念。这些结果为预防和治疗种植体周围感染提供了良好的应用前景。
Peri-implant infection is one of the biggest threats to the success of dental implant. Existing coatings on titanium surfaces exhibit rapid decrease in antibacterial efficacy, which is difficult to promisingly prevent peri-implant infection. Herein, we report an N-halamine polymeric coating on titanium surface that simultaneously has long-lasting renewable antibacterial efficacy with good stability and biocompatibility. Our coating is powerfully biocidal against both main pathogenic bacteria of peri-implant infection and complex bacteria from peri-implantitis patients. More importantly, its antibacterial efficacy can persist for a long term (e.g., 12~16 weeks) in vitro, in animal model, and even in human oral cavity, which generally covers the whole formation process of osseointegrated interface. Furthermore, after consumption, it can regain its antibacterial ability by facile rechlorination, highlighting a valuable concept of renewable antibacterial coating in dental implant. These findings indicate an appealing application prospect for prevention and treatment of peri-implant infection.
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