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Development of new titanium alloys with superior biocompatibility

Research Project

Project/Area Number 05558107
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Biomedical engineering/Biological material science
Research InstitutionTokyo Medical and Dental University

Principal Investigator

HAMANAKA Hitoshi  Tokyo Medical and Dental University Institute for Medical and Dental Engineering Professor, 医用器材研究所, 教授 (10013955)

Co-Investigator(Kenkyū-buntansha) KOBAYASHI Equo  Tokyo Medical and Dental University Institute for Medical and Dental Engineering, 医用器材研究所, 助手 (40242268)
YONEYAMA Takayuki  Tokyo Medical and Dental University Institute for Medical and Dental Engineering, 医用器材研究所, 助教授 (00220773)
NAKAMURA Akitada  National Institute of Health Sciences Division of Medical Devices, Director, 療品部, 部長 (50172391)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥8,900,000 (Direct Cost: ¥8,900,000)
Fiscal Year 1995: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1994: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1993: ¥4,400,000 (Direct Cost: ¥4,400,000)
KeywordsTitanium alloy / Biocompatibility / Mechanical property / Dental casting / 摩耗試験 / 生物学的安全性 / 生体用金属材料 / ジルコニウム合金
Research Abstract

To develop new biocompatible titanium alloys in this research project, the binary alloy of titanium and zirconium, which is also known as a biocompatible metallic element, was investigated. The tensile strength of the binary alloy was 900-950 MPa when the contents of titanium and zirconium were higher than 30% each, while those of the two elements were 300-350 MPa. In addition, the strength increased with a third element, which suggests the possibility of a metallic biomaterial possessing even higher strength.
In an immersion test, the amount of released ions from titanium-zirconium alloy was considerably lower than those from the pure component metals. Biocompatibility of the alloy was examined by a subcutaneous implantation test using rats. As a result, titanium-zirconium alloy was proved to be more biocompatible than titanium.
Dental casting of Ti-6Al-7Nb alloy was also investigated with the aim of improving the biocompatibility and the castability of Ti-6Al-4V alloy. Although the tensile strength of Ti-6Al-7Nb casting was slightly lower than that of Ti-6Al-4V,the elongation of the former was about 7%, much larger than that of the latter. The mechanical property of Ti-6Al-7Nb was less scattered and was evaluated to be more reliable by better castability. Therefore, Ti-6Al-7Nb was proved to be practicable enough as a dental casting alloy.
In addition, mechanical properties of TiAl-base alloys were examined. TiAl-base alloy is an intermetallic compound and a promising heat-resistant material. The strength of this alloy increased by the addition of niobium, and it is thought to be another candidate for a metallic biomaterial.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] T.Yoneyama: "Influence of mold materials and heat treatment on tensile properties of Ni-Ti alloy castings" Bulletin of the Tokyo Medical and Dental University. 40. 167-172 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小林郁夫: "生体用TiAl基合金の力学的性質に及ぼす化学量論組成からのずれの影響" 医用器材研究所報告. 27. 33-37 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小林郁夫: "歯科鋳造したチタン-ジルコニウム基合金の力学的特性" 歯科材料・器械. 14. 321-328 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小林郁夫: "歯科鋳造した生体用Ti-6Al-7Nb合金の鋳造性と力学的性質" 歯科材料・器械. 14. 406-413 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] E.Kobayashi: "Mechanical properties of the binary titanium-zirconium alloys and their potential for biomedical materials" Journal of Biomedical Materials Research. 29. 943-950 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Yoneyama, M.Kotake, E.Kobayashi, H.Doi, H.Hamanaka: "Influence of mold materials and heat treatment on tensile properties of Ni-Ti alloy castings" Bulletin of the Tokyo Medical and Dental University. 40 (4). 167-172 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] E.Kobayashi, H.Doi, T.Yoneyama, H.Hamanaka: "Influence of deviation from stoichiometric composition on mechanical properties of TiAl-base alloys for biomaterials" Reports of the Institute for Medical and Dental Engineering. 27. 33-37 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] E.Kobayashi, H.Doi, T.Yoneyama, H.Hamanaka, S.Matsumoto, K.Kudaka: "Evaluation of Mechanical properties of Dental-cast Ti-Zr Based Alloys19GC03 : The Journal of the Japanese Society for Dental Materials and Devices" 14 (3). 321-328 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] E.Kobayashi, H.Doi, M.Takahashi, T.Nakano, T.Yoneyama, H.Hamanaka: "Castability and Mechanical properties of Ti-6Al-7Nb Alloy dental-cast19GC04 : The Journal of the Japanese Society for Dental Materials and Devices" 14 (4). 406-413 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] E.Kobayashi, S.Matsumoto, H.Doi, T.Yoneyama, H.Hamanaka: "Mechanical properties of the binary titanium-zirconium alloys and their potential for biomedical materials" Journal of Biomedical MaterialsResearch. 29 (8). 943-950 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Yoneyama: "Influence of mold materials and heat treatment on tensile properties of Ni-Ti alloy castings" Bulletin of the Tokyo Medical and Dental University. 40. 167-172 (1993)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小林郁夫: "生体用TiA1基合金の力学的性質に及ぼす化学量論組成からのずれの影響" 医用器材研究所報告. 27. 33-37 (1993)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小林郁夫: "歯科鋳造したチタン-ジルコニウム基合金の力学的特性" 歯科材料・器械. 14. 321-328 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小林郁夫: "歯科鋳造した生体用Ti-6A1-7Nb合金の鋳造性と力学的性質" 歯科材料・器械. 14. 406-413 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] E.Kobayashi: "Mechanical properties of the binary titanium-zirconium alloys and their potential for biomedical materials" Journal of Biomedical Materials Research. 29. 943-950 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 浜中人士,中野毅,土居寿,小林郁夫: "歯科用コバルト・クロム合金とチタンの疲労特性の比較" 歯科材料・器械,特別号24. 13. 142-143 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 土居寿,中野毅,小林郁夫,浜中人士ほか: "歯科用マッフル炉における鋳型の温度差に与える配置の影響" 歯科材料・器械. 13. 451-458 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 土居寿,中野毅,小林郁夫,米山隆之ほか: "歯科鋳造したチタンの疲労特性" 第8回歯科チタン研究会講演抄録集. 38-39 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 小竹雅人,土居寿,小林郁夫,米山隆之ほか: "キャストクラスプへ応用した超弾性Ti-Ni合金の力学的検討" 第8回歯科チタン研究会講演抄録集. 44-45 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 土居寿,中野毅,小林郁夫,米山隆之ほか: "歯科用コバルト・クロム合金とチタン鋳造体の疲労特性の比較" 歯科材料・器械. 14. 101-108 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 浜中人士: "チタンの耐食性" QDT別冊チタンの歯科技工. 31-31 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小林郁夫: "金属系新素材の医療への応用" 新素材. 5. 24-29 (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2021-09-02  

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