Machinability of an experimental Ti-Ag alloy in terms of tool life in a dental CAD/CAM system

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  • INAGAKI Ryoichi
    School for Dental Laboratory Technicians, Tohoku University
  • KIKUCHI Masafumi
    Department of Biomaterials Science, Kagoshima University Graduate School of Medical and Dental Sciences
  • TAKAHASHI Masatoshi
    Division of Dental Biomaterials, Tohoku University Graduate School of Dentistry
  • TAKADA Yukyo
    Division of Dental Biomaterials, Tohoku University Graduate School of Dentistry
  • SASAKI Keiichi
    Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry

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Description

Titanium is difficult to machine because of its intrinsic properties. In a previous study, the machinability of titanium was improved by alloying with silver. This study aimed to evaluate the durability of tungsten carbide burs after the fabrication of frameworks using a Ti-20%Ag alloy and titanium with a computer-aided design and computer-aided manufacturing system. There was a significant difference in attrition area ratio between the two metals. Compared with titanium, the ratio of the area of attrition of machining burs was significantly lower for the experimental Ti-20%Ag alloy. The difference in the area of attrition for titanium and Ti-20%Ag became remarkable with increasing number of machining operations. The results show that the same burs can be used for a longer time with Ti-20%Ag than with pure titanium. Therefore, in terms of tool life, the machinability of the Ti-20%Ag alloy is superior to that of titanium.

Journal

  • Dental Materials Journal

    Dental Materials Journal 34 (5), 679-685, 2015

    The Japanese Society for Dental Materials and Devices

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