Carbon nanotube coating on titanium substrate modified with TiO2 nanotubes

  • Yu Bai
  • Ilsong Park
  • Taesung Bae
  • Kyounga Kim
  • Fumio Watari
  • Motohiro Uo
  • Minho Lee (白玉)
Article
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Abstract

A combination of carbon nanotubes (CNTs) and titanium (Ti) modified with TiO2 nanotubes (TiO2 NTs) was fulfilled with the aim of improving bioactivity of Ti implant. First, well-ordered TiO2 NTs were prepared by the electrochemical anodization of Ti in an ethylene glycol electrolyte containing 1 wt% NH4F and 10 wt% H2O at 20 V for 50 min, followed by annealing. Then, the carboxylated CNTs were coated onto the TiO2 NTs using electrophoretic deposition (EPD) technique. The growth of hydroxyapatite (HA) on the samples was investigated by soaking them in simulated body fluid (SBF). The result showed the CNTs-coated Ti with the modification of TiO2 NTs (CNTs-TiO2 NTs) was more efficient to induce HA formation than the CNTs-coated smooth Ti (CNTs-Ti). The vitro cell response was evaluated using osteoblast cells (MC3T3-E1). The good cell proliferation and strong cell adhesion could be obtained on the CNTs-TiO2 NTs. These results indicated that CNT coating on the Ti modified with TiO2 NTs could be potentially useful for the periodontal ligament combination on dental implants.

Key words

carbon nanotubes TiO2 nanotubes apatite-forming ability cell adhesion 
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Copyright information

© Wuhan University of Technology and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Yu Bai
    • 1
    • 5
  • Ilsong Park
    • 1
  • Taesung Bae
    • 1
  • Kyounga Kim
    • 2
  • Fumio Watari
    • 3
  • Motohiro Uo
    • 4
  • Minho Lee (白玉)
    • 1
  1. 1.Department of Dental Biomaterials, School of Dentistry and Institute of Oral Bioscience, Brain Korea 21 ProjectChonbuk National UniversityJeonjuKorea
  2. 2.Department of Conservative Dentistry, Institute of Oral Bioscience and BK 21 Project, School of DentistryChonbuk National UniversityJeonjuKorea
  3. 3.Biomedical, Dental Materials and Engineering, Department of Oral Health Science, Graduate School of Dental MedicineHokkaido UniversitySapporoJapan
  4. 4.Advanced Biomaterials Section, Graduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
  5. 5.School of Materials Science and EngineeringInner Mongolia University of TechnologyHuhhotChina

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