Bio-inspired nanocomposite coatings on orthodontic archwires with corrosion resistant and antibacterial properties

Frontiers in Bioengineering and Biotechnology

Bioengineering and Biotechnology

Zebin Zheng¹  Zihan Chen¹  Yuming Chen¹  Yong Xia² 

[1] The First Affiliated Hospital of Shantou University Medical College, Shantou, China;null;

关键词: polydopamine-graphene oxide;    NiTi alloy;    corrosion resistance;    antibacterial properties;    orthodontic archwire;   

DOI  :  10.3389/fbioe.2023.1272527

 received in 2023-08-04, accepted in 2023-10-02,  发布年份 2023

来源: Frontiers

【 摘 要 】

The corrosion resistance and antibacterial properties of fixed orthodontic devices are insufficient in the complex oral cavity, which delays tooth movement and causes enamel demineralization. To overcome the challenges, this research constructs a series of polydopamine-graphene oxide (PDA-GO) nanocoatings on representative NiTi archwires via self-assembly. The morphology, chemical structure, and multifunctional properties of coatings showed tunability dependent on the PDA/GO ratio. Optimized PDA-GO coatings with uniform and dense characteristics prolonged the diffusion path for the corrosive medium and reduced Ni dissolution in NiTi alloys. Meanwhile, the applied coatings endowed NiTi alloys with antibacterial activity against Streptococcus mutans due to the surface structures and inherent properties of PDA-GO. In vitro cytotoxicity tests further verified their good biocompatibility. This bio-inspired nanocomposite coating provides a practical reference for modification of dental metal surfaces to better behave in the intraoral environment.

【 授权许可】

Unknown   
Copyright © 2023 Chen, Chen, Zheng and Xia.