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A New Method for Promoting Adhesion between Precious Metal Alloys and Dental Adhesives
H. Ohno
Department of Dental Materials Science, School of Dentistry, Higashi-Nippon-Gakuen University, 061-02 Ishikari-Tobetsu, Hokkaido, Japan
Y. Araki
Department of Dental Materials Science, School of Dentistry, Higashi-Nippon-Gakuen University, 061-02 Ishikari-Tobetsu, Hokkaido, Japan
K. Endo
Department of Dental Materials Science, School of Dentistry, Higashi-Nippon-Gakuen University, 061-02 Ishikari-Tobetsu, Hokkaido, Japan
A new, simple method of modifying the adherend metal surface by a liquid Ga-Sn alloy (Adlloy) was applied to dental precious and base-metal alloys for adhesion with 4-META adhesive resin. Adhesions of 4-META resin to three other surface states-as-polished, oxidized at high temperature, and electroplated tin-were also performed for comparison with the adhesion on Adlloy-modified surfaces. Bond strength measurements were made, and the durability against water at the adhering interface was evaluated.
The Adlloy-modified gold alloys (Type IV and 14 K) and silverbasedalloys (Ag-Pd and Ag-Cu) showed not only high bond strengths but also excellent water durability at the adhesion interface. Surface modification by Adlloy, however, did not affect adhesion to Ag-In-Zn and base-metal (SUS, Co-Cr, and Ni-Cr) alloys. Adhesion to the tin-electroplated specimens was comparable with that to the Adlloy-modified specimens.
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Journal of Dental Research, Vol. 71, No. 6,
1326-1331 (1992)
DOI: 10.1177/00220345920710061001

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H. Ohno, Y. Araki, and K. Endo
ESCA Study on Dental Alloy Surfaces Modified by Ga-Sn Alloy
Journal of Dental Research,
June 1, 1992;
71(6):
1332 - 1339.
[Abstract]
[PDF]
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