Development of Casting Investment Preventing Blackening of Noble Metal Alloys : Part 2. Application of Developed Investment for Type 4 Gold Alloy
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概要
- 論文の詳細を見る
The objective of this study was to evaluate the efficacy of the developed investment for the prevention of blackening of a cast Type 4 gold and to analyze the oxides on its surface in relation to the blackening of the alloy. The experimental investments were prepared using a gypsum-bonded investment in which boron (B) or aluminum (Al) was added as a reducing agent. A Type 4 gold alloy was cast into the mold made of the prepared investment. The effect of the additives was evaluated from the color difference (△E) between the as-cast surface and the polished surface of the cast specimen. B and Al were effective to prevent the blackening of a Type 4 gold alloy and the color of the as-cast surface approached that of the polished surface with increasing B and Al content. The prevention of the blackening of the gold alloy can be achieved by restraining the formation of CuO.
- 日本歯科理工学会の論文
著者
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OGURA Hideo
Department of Dental Materials Science, School of Dentistry at Niigata, The Nippon Dental University
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Nakai Akira
日本歯科大学新潟歯学部 歯科理工学講座
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GOTO Shin-ichi
Department of Chemistry, Niigata University
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NAKAI Akira
Department of Dental Materials Science, School of Dentistry at Niigata, The Nippon Dental University
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Goto S
Department Of Dental Materials Science School Of Life Dentistry At Niigata The Nippon Dental Univers
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Ogura H
Department Of Dental Materials Science School Of Life Dentistry At Niigata The Nippon Dental Univers
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Ogura Hideo
Nippon Dental Univ. Niigata Jpn
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Ogura Hideo
Department Of Dental Materials Science
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Goto Shin-ichi
Department Of Chemistry Niigata University
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Nakai A.
Dept. Of Dent. Mater. Sci. Sch. Sch. Of Dentistry At Niigata The Nippon Dental Univ.
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Nakai A
Department Of Dental Materials Science School Of Dentistry At Niigata The Nippon Dental University
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KAKUTA Kiyoshi
Department of Dental Materials Science, School of Dentistry at Niigata, The Nippon Dental University
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Yara Atushi
Department Of Dental Materials Science School Of Dentistry At Niigata The Nippon Dental University
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Kakuta Kiyoshi
Department Of Dental Materials Science School Of Dentistry At Niigata The Nippon Dental University
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KATO Katuma
Department of Dental Materials Science, School of Dentistry at Niigata, The Nippon Dental University
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Kakuta Kiyoshi
Nippon Dental Univ. Niigata Jpn
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Nakai Akira
Department Of Biochemistry And Molecular Biology Yamaguchi University Graduate School Of Medicine
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Nakai Akira
Department Of Dental Materials Science School Of Dentistry At Niigata The Nippon Dental University
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Ogura Hideo
Department Of Dental Materials Science School Of Dentistry At Niigata The Nippon Dental Univ. Japan
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OGURA Hideo
Department of Dental Materials Science, School of Life Dentistry at Niigata, The Nippon Dental University
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Nakai Akira
Department of Applied Chemistry, Faculty of Engineering, Okayama University
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