PROBLEM TO BE SOLVED: To provide a method for producing a metal-metal oxide composite material for dental prosthesis having excellent toughness, strength and biocompatibility and also having satisfactory aesthetics.SOLUTION: In the method for manufacturing a metal-metal oxide composite material for dental prosthesis, titanium or a titanium alloy as a substrate is subjected to high temperature heat treatment to oxidize the surface of the base material and to form a film having high whiteness. It is preferable that the titanium or titanium alloy is heat-treated at 800 to 1,200°C for 20 min to 24 hr in the air or in oxygen. It is preferable that a temperature drop rate in the heat treatment is controlled to ≤2°C/min.COPYRIGHT: (C)2013,JPO&INPIT【課題】靭性、強度、生体適合性が優れ、かつ審美性のよい歯科補綴用金属-金属酸化物複合材料の製造方法の提供。【解決手段】チタンあるいはチタン合金を基材として高温熱処理により、基材表面を酸化させて高白色度の皮膜を生成させる、歯科補綴用金属-金属酸化物複合材料の製造方法。該チタンあるいはチタン合金は、大気中あるいは酸素中で800~1200℃、20分~24時間、熱処理することが好ましい。該熱処理の降温速度は、2℃/min以下とすることが好ましい。【選択図】図2
