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The Synergy of Topographical Micropatterning and Ta|TaCu Bilayered Thin Film on Titanium Implants Enables Dual‐Functions of Enhanced Osteogenesis and Anti‐Infection
Author(s) -
Zhu Mingyu,
Fang Ju,
Li Yulei,
Zhong Chuanxin,
Feng Shihui,
Ge Xiang,
Ye Haixia,
Wang Xiaofei,
Zhu Weiwei,
Lu Xiong,
Ren Fuzeng
Publication year - 2021
Publication title -
advanced healthcare materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.288
H-Index - 90
eISSN - 2192-2659
pISSN - 2192-2640
DOI - 10.1002/adhm.202002020
Subject(s) - micropatterning , materials science , titanium , biomedical engineering , tantalum , nanotechnology , regeneration (biology) , layer (electronics) , surface modification , chemical engineering , metallurgy , medicine , engineering , biology , microbiology and biotechnology
Poor osteogenesis and implant‐associated infection are the two leading causes of failure for dental and orthopedic implants. Surface design with enhanced osteogenesis often fails in antibacterial activity, or vice versa. Herein, a surface design strategy, which overcomes this trade‐off via the synergistic effects of topographical micropatterning and a bilayered nanostructured metallic thin film is presented. A specific microgrooved pattern is fabricated on the titanium surface, followed by sequential deposition of a nanostructured copper (Cu)‐containing tantalum (Ta) (TaCu) layer and a pure Ta cap layer. The microgrooved patterns coupled with the nanorough Ta cap layer shows strong contact guidance to preosteoblasts and significantly enhances the osteogenic differentiation in vitro, while the controlled local sustained release of Cu ions is responsible for high antibacterial activity. Importantly, rat calvarial defect models in vivo further confirm that the synergy of microgrooved patterns and the Ta|TaCu bilayered thin film on titanium surface could effectively promote bone regeneration. The present effective and versatile surface design strategy provides significant insight into intelligent surface engineering that can control biological response at the site of healing in dental and orthopedic implants.