Apatite formation on surface titanate layer with different Na content on Ti metal

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概要

• 論文の詳細を見る

• It was early shown that Ti metal spontaneously bonds to living bone through an apatite layer formed on its surface in the living body, when it was subjected to NaOH and heat treatment to form a sodium titanate on its surface. This kind of bioactive Ti metal was applied to artificial hip joint and already clinically used in Japan. During the study of fabrication process of the hip joint, it was found that sodium content of the surface layer of the Ti metal is largely varied with washing condition after the NaOH treatment, and that apatite-forming ability of the NaOH- and heat-treated Ti metal is liable to decrease in humid environment for a long period. In the present study, the sodium content of the surface layer of the Ti metal was systematically changed by water or HCl treatment after NaOH treatment. Effect of the sodium content of the surface layer on apatite-forming ability in a simulated body fluid and its stability in humid environment of the NaOH- and heat-treated Ti metal were investigated. As a result, it was found that the NaOH- and heat-treated Ti metal gives high and stable apatite-forming ability, when the Ti metal was treated with water after the NaOH treatment to remove partially sodium ions in the surface layer, and subjected to heat treatment.

• 公益社団法人 日本セラミックス協会の論文

著者

• Nakamura Takashi

  Department of Cardiology, Saiseikai Shigaken Hospital

• KAWAI Takahiro

  Department of Electrical and Electronic Engineering, Toyohashi University of Technology

• Kawai Takahiro

  Department Of Cardiovascular Surgery Fukui Cardiovascular Center

• Kokubo Tadashi

  Dep. Of Biomedical Sci. Coll. Of Life And Health Sciences Chubu Univ.

• Unuma Hidero

  Department Of Chemistry And Chemical Engineering Yamagata University

• TAKADAMA Hiroaki

  Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University

• MATSUSHITA Tomiharu

  Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University

• KOKUBO Tadashi

  Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University

• KIZUKI Takashi

  Department of Biomedical Science, College of Life and Health Sciences, Chubu University

• Nakamura Takashi

  Department Of Cardiology Saiseikai Shiga Hospital

• MATSUSHITA Tomiharu

  Department of Biomedical Science, College of Life and Health Sciences, Chubu University

• UNUMA Hidero

  Department of Chemistry and Chemical Engineering, Graduate School of Science and Engineering, Yamagata University

• KOKUBO Tadashi

  Department of Biomedical Science, College of Life and Health Sciences, Chubu University

• TAKADAMA Hiroaki

  Department of Biomedical Science, College of Life and Health Sciences, Chubu University

• KAWAI Takahiro

  Department of Chemistry and Chemical Engineering, Graduate School of Science and Engineering, Yamagata University

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