Development of New Titanium Coating Material (CaTiO3-aC) with Modified Thermal Decomposition Method

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  • Nagai Noriyuki
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Center of Oral Health Science, International Dental Hygienist College in Okayama, Motoyama Gakuin
  • Okauchi Mika
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
  • Rodriguez Andrea
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
  • Gunduz Mehmet
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
  • Hu Hailong
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
  • Kubota Midori
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
  • Nagaoka Noriyuki
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
  • Inoue Miho
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
  • Nagatsuka Hitoshi
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
  • Takagi Tohru
    Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Center of Oral Health Science, International Dental Hygienist College in Okayama, Motoyama Gakuin
  • Akao Masaru
    Center of Oral Health Science, International Dental Hygienist College in Okayama, Motoyama Gakuin

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We developed a novel method for titanium coating material using modified thermal decomposition technique, specifically focusing on presence of CaTiO3 and carbon C. Two layers of thin film coating composed of CaTiO3-amorphous carbon compound (CaTiO3-aC) and hydroxyapatite (HA) were generated on titanium surface. In this method, ratios of Ca/P as well as Ca/Ti, sintering temperature and sintering velocity were carefully planned. Within crystal structure of CaTiO3 granules, 4 atomic % of carbon in amorphous state was included. By our method, inclusion of carbon in HA suggested formation of carbonate apatite. Regarding with attachment-detachment experiment at titanium surface, adhesion strength was 2.5 times stronger in CaTiO3-aC/HA coating substrate as compared to HA only coating material. Results of the novel developed modified thermal decomposition method suggested that the 2 layers biomaterial composed of CaTiO3-aC (0.6 μm) and carbonate apatite-included HA (2.4 μm) can be used as a coating material on titanium surface.

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