Ti-15Zr-4Nb-4Ta合金の機械的性質と耐食性および補綴物の試作 Mechanical Properties and Corrosion Resistance of Dental Cast Ti-15Zr-4Nb-4Ta Alloy and Trial Fabrication of Metal Plates,Crown and Bridge

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著者

    • 真辺 剛史 MANABE Takeshi
    • 日本大学松戸歯学部第l歯科補綴学教室 Mechanical Engineering Laboratory, Agencyof Industria1 Science and Technology,Ministry of lnternational Tradeand lndustry
    • 中田 浩史 NAKADA Hiroshi
    • 日本大学松戸歯学部第l歯科補綴学教室 Mechanical Engineering Laboratory, Agencyof Industria1 Science and Technology,Ministry of lnternational Tradeand lndustry
    • 岡崎 義光 OKAZAKI Yoshimitsu
    • 通商産業省工業技術院機械技術研究所 Department of Complete Denture Prosthodontics, Nihon University School of Dentistry at Matsudo
    • 小林 喜平 KOBAYASHI Kihei
    • 日本大学松戸歯学部第l歯科補綴学教室 Mechanical Engineering Laboratory, Agencyof Industria1 Science and Technology,Ministry of lnternational Tradeand lndustry

抄録

Mechanical properties and corrosion resistance for dental castings with Ti-15%Zr-4%Nb-4%Ta alloy without V and Al were evaluated by tensile test at room temperature, micro Vickers hardness test, anodic polarization test in 1% lactic acid and artificial saliva solutions. Trial fabrication of metal plates for complete and partial dentures, crown, and bridge with the new titanium alloy was conducted.<BR>The 0.2%proof strength and ultimate tensile strength for the dental cast were 739±53 MPa and 915±51MPa, respectively. Total elongation and reduction of area were 7±2%and 8±6%, respectively, and Young's modulus was 86±8GPa. The results were satisfactory compared to the Japanese Industrial Standard values for various dental casting alloys. However, micro Vickers hardness on the casting surface was higher than that in the center. Anodic polarization curves of the dental casting showed corrosion resistance similar to that of annealed Ti-15%Zr-4%Nb-4%Ta alloy. Current density in the high-potential region (over 2 V vs. SCE) was lower than that of Ti-6%A1-4%V ELI (Extra Low Interstitial) alloy. Moreover, the Ti-15%Zr-4%Nb-4%Ta alloy was found to be applicable for making a dental prosthesis using casting conditions similar to those of commercial pure titanium (CP Ti) casting. The findings indicated that the Ti-15%Zr-4%Nb-4%Ta alloy could be successfully used as a dental casting alloy.

収録刊行物

  • 日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society

    日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society 44(4), 512-521, 2000-08-10

    Japan Prosthodontic Society

参考文献:  40件中 1-40件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    10008156050
  • NII書誌ID(NCID)
    AN00197911
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03895386
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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