Adhesion of Adhesive Resin to Dental Precious Metal Alloys. Part II. The Relationship between Surface Structure of Au-In Alloys and Adhesive Ability with 4-META Resin.

DOI NDLデジタルコレクション Web Site PubMed 被引用文献5件 参考文献10件 オープンアクセス
  • OHNO Hiroki
    Department of Dental Materials Science, Health Sciences University of Hokkaido, School of Dentistry
  • ENDO Kazuhiko
    Department of Dental Materials Science, Health Sciences University of Hokkaido, School of Dentistry
  • YAMANE Yuro
    Department of Dental Materials Science, Health Sciences University of Hokkaido, School of Dentistry
  • KAWASHIMA Isao
    Department of Dental Materials Science, Health Sciences University of Hokkaido, School of Dentistry

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  • Part II The Relationship between Surface Structure of Au-In Alloys and Adhesive Ability with 4-META Resin

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Adhesion of 4-META to Au-In alloy was improved by adding In equivalent to 15% of Au content. On the basis of the results of Au-In alloys analyzed by XPS, the present study investigated the reason why adhesion of the Au-In alloy was improved. The O 1s spectrum could be separated into three oxygen chemical states, In2O3, chemisorbed H2O, and physisorbed H2O. The amount of chemisorbed H2O decreased remarkably with increasing amount of In. It is considered that the poor adhesive ability of the pure gold and alloys containing only small amounts of In was due to the chemisorbed H2O molecules and insufficient indium oxide on the alloy surface. It was established that excellent adhesion requires an oxide with chemical affinity for 4-META to cover at least 50% of the alloy surface.

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