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Author:

Zhou, Jianhong (Zhou, Jianhong.) | Li, Bo (Li, Bo.) | Zhao, Lingzhou (Zhao, Lingzhou.) | Zhang, Lan (Zhang, Lan.) | Han, Yong (Han, Yong.)

Indexed by:

SCIE Scopus

Abstract:

Advanced titanium (Ti) based bone implants with antibacterial and osteogenic activities are extremely needed in clinics. Herein, biomimetic hierarchical micropore/nanorod patterned coatings (MNRs) on Ti were developed, in which the nanorods revealed a fixed interrod spacing of about 70 nm and consisted of fluorine (F) incorporated Ca9Sr1(PO4)(6)(OH)(2) (Sr-1- HA, strontium containing hydroxyapatite) with the fixed Sr but different F content. The incorporation of F was determined by XRD, FTTR, and TEM, revealing the substitution of OH- in Sr-1 -HA to F-. The topography, surface roughness, and hydrophilic nature of MNRs were not apparently affected by the incorporation of F. The antibacterial and osteogenic activities of MNRs were assessed in vitro and in a bacterial-infected rabbit model. Both the in vitro and in vivo results showed that F-free and similar to 1 wt % F doped MNR significantly promoted osteogenic activity compared to that of Ti but showed a lack of antibacterial activity. The incorporation of a higher dose of F led to the significantly improved antibacterial and osteogenic activities, and the effects were related to the incorporated F dose. In total, compared to F-free, similar to 1, similar to 2, and similar to 7 wt % F doped MNRs, % F doped MNR significantly enhanced antibacterial and osteogenic activities, especially new bone formation and osseointegration in the bacteria infected case, showing a high potential as the next generation of advanced bone implant.

Keyword:

antibacterial ability biomimetic hierarchical topography fluorine incorporation mesenchymal stem cell osseointegration Sr-HA nanorod

Author Community:

  • [ 1 ] [Zhou, Jianhong; Li, Bo; Zhang, Lan; Han, Yong] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
  • [ 2 ] [Zhou, Jianhong] Baoji Univ Arts & Sci, Inst Phys & Optoelect Technol, Baoji 721016, Peoples R China
  • [ 3 ] [Zhao, Lingzhou] Fourth Mil Med Univ, Sch Stomatol, Dept Periodontol, State Key Lab Mil Stomatol, Xian 710032, Peoples R China
  • [ 4 ] [Zhou, Jianhong]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
  • [ 5 ] [Li, Bo]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
  • [ 6 ] [Zhang, Lan]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
  • [ 7 ] [Han, Yong]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
  • [ 8 ] [Zhou, Jianhong]Baoji Univ Arts & Sci, Inst Phys & Optoelect Technol, Baoji 721016, Peoples R China
  • [ 9 ] [Zhao, Lingzhou]Fourth Mil Med Univ, Sch Stomatol, Dept Periodontol, State Key Lab Mil Stomatol, Xian 710032, Peoples R China

Reprint Author's Address:

  • Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.

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Source :

ACS BIOMATERIALS SCIENCE & ENGINEERING

ISSN: 2373-9878

Year: 2017

Issue: 7

Volume: 3

Page: 1437-1450

4 . 4 3 2

JCR@2017

4 . 7 4 9

JCR@2020

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 18

SCOPUS Cited Count: 21

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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