Properties of commercially pure titanium as restorative material

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  • HANAWA Takao
    Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University Center for Advanced Medical Engineering Research & Development, Kobe University

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  • 歯冠修復材料としての純チタンの理工学的特性
  • シカン シュウフク ザイリョウ ト シテ ノ ジュンチタン ノ リコウガクテキ トクセイ

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Abstract

<p>Properties of commercially pure titanium (CP Ti) as restorative material are summarized and overviewed based on the property of CP Ti itself and published research results: Changes in mechanical properties of CP Ti through dental casting, workability and deformability, soldering and welding, polishing and grinding, porcelain-fused-to-metal and adhesion to resins, cement luting, and corrosion and tarnish. The majority of research on CP Ti for dental restoratives has been performed by Japanese researchers. The mechanical properties are changed by the solid solution of impurity elements and formation of a reaction layer with investment materials after dental casting. A diamond wheel is effective for grinding CP Ti. Laser welding under an argon atmosphere is effective for jointing CP Ti. In addition, the removal of the reaction layer with investment materials by sandblasting and chemical treatment increases the bonding strength with porcelains and resins. Resin cements are effective for the luting of CP Ti. CP Ti may be corroded or tarnished by fluoride contained in toothpastes and mouth washes.</p>

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