Biological Response to Nanostructure of Carbon Nanotube/titanium Composite Surfaces
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- NISHIDA Erika
- Department of Periodontology and Endodontology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
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- MIYAJI Hirofumi
- Department of Periodontology and Endodontology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
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- UMEDA Junko
- Joining and Welding Research Institute, Osaka University, Ibaraki, Japan
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- KONDOH Katsuyoshi
- Joining and Welding Research Institute, Osaka University, Ibaraki, Japan
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- TAKITA Hiroko
- Support Section for Education and Research, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
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- KANAYAMA Izumi
- Department of Periodontology and Endodontology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
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- TANAKA Saori
- Department of Periodontology and Endodontology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
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- KATO Akihito
- Department of Periodontology and Endodontology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
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- FUGETSU Bunshi
- Nano-Agri Lab, Policy Alternatives Research Institute, The University of Tokyo, Tokyo, Japan.
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- AKASAKA Tsukasa
- Department of Biomaterials and Bioengineering, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
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- KAWANAMI Masamitsu
- Department of Periodontology and Endodontology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
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Abstract
Titanium (Ti) is frequently used as a biomaterial in dental and orthopedic implants and in bone fixation devices. Effective modification of the Ti surface plays a crucial role in improving biocompatibility. Carbon nanotubes (CNTs) are among the most interesting nanomaterials due to their unique properties. In this study, we fabricated CNT-Ti composite surfaces by annealing Ti plates covered by different sized CNTs (Nanocyl NC 7000, 9.5 nm diameter and VGCF-H, 150 nm diameter). The properties of these surfaces were examined by scanning electron microscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, raman spectroscopy, contact angle measurement and osteoblast-like cell seeding. In addition, samples were implanted into the subcutaneous tissue of rats. The three-dimensional nanostructures of CNTs and creation of titanium carbide were evident on the Ti surfaces, suggesting that the CNTs were well-anchored onto the Ti plates. CNT modification promoted desirable cell behavior, including cell spreading and proliferation, especially on the Nanocyl-modified surface. Inflammatory response was rarely observed on the Nanocyl surface, but macrophage-like giant cells were frequently observed on the VGCF-H surface. Therefore, the nanomorphology of narrow diameter CNTs provides a CNT-Ti composite surface with good biocompatibility.
Journal
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- Nano Biomedicine
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Nano Biomedicine 7 (1), 11-20, 2015
Nano Biomedical Society
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Details 詳細情報について
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- CRID
- 1390282680320943360
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- NII Article ID
- 130005150626
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- NII Book ID
- AA12510316
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- ISSN
- 21854734
- 18835198
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- HANDLE
- 2115/61559
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- CiNii Articles
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- Abstract License Flag
- Disallowed