Net Shape Forming of Dental Prosthetic Crown<br>by DC Pulse Resistance Sintering Process of Titanium Powder Metal

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  • 直接通電加熱加圧焼結による<br>純チタン製クラウンのネットシェイプ成形
  • チョクセツ ツウデン カネツ カアツ ショウケツ ニ ヨル ジュンチタンセイ クラウン ノ ネット シェイプ セイケイ

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Abstract

Titanium metal has been used as a dental prosthesis material because of its good biocompatibility. Most of the dental prostheses made of titanium metal have been manufactured by precision lost-wax casting. However, this is not always the best manufacturing process for low-strength products or a long processing time. The authors have developed a net shape forming process for fabricating a precision thin-walled cylindrical can made of titanium powder using a DC pulse resistance sintering apparatus. In the present paper, the DC pulse resistance sintering process of pure titanium powder has been introduced to develop a net shaped dental prosthetic crown. As a result, it has been confirmed that the titanium dental prosthetic crown developed by the process has high density, sufficient hardness and adequate dimensional accuracy.

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