Mechanical Properties and Corrosion Resistance of Dental Cast Ti-15Zr-4Nb-4Ta Alloy and Trial Fabrication of Metal Plates, Crown and Bridge.

• Manabe Takeshi

  Department of Complete Denture Prosthodontics, Nihon University School of Dentistry at Matsudo

• Nakada Hiroshi

  Department of Complete Denture Prosthodontics, Nihon University School of Dentistry at Matsudo

• Okazaki Yoshimitsu

  Mechanical Engineering Laboratory, Agency of Industrial Science and Technology, Ministry of International Trade and Industry

• Kobayashi Kihei

  Department of Complete Denture Prosthodontics, Nihon University School of Dentistry at Matsudo

Bibliographic Information

Other Title

• 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

Abstract

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.

Journal

• Nihon Hotetsu Shika Gakkai Zasshi

  Nihon Hotetsu Shika Gakkai Zasshi 44 (4), 512-521, 2000

  Japan Prosthodontic Society

Keywords

• titanium alloy
• mechanical properties
• corrosion resistance
• metal plate
• crown and bridge

Details

• CRID: 1390001204408955008
• NII Article ID: 10008156050
• NII Book ID: AN00197911
• DOI: 10.2186/jjps.44.512
• ISSN: 1883177X
• ISSN: 03895386
• Web Site: http://www.jstage.jst.go.jp/article/jjps1957/44/4/44_4_512/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2001033074
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed