A new method for promoting adhesion between precious metal alloys and dental adhesives.
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 silver-based alloys (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.
Ohno
H
H
Department of Dental Materials Science, School of Dentistry, Higashi-Nippon-Gakuen University, Hokkaido, Japan.
Araki
Y
Y
Endo
K
K
D000180:Acrylic Resins / Q000737:chemistry; D000268:Adhesiveness; D000269:Adhesives / Q000737:chemistry; D000497:Alloys / Q000737:chemistry; D002858:Chromium Alloys / Q000737:chemistry; D003722:Dental Alloys / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements / Q000737:chemistry*; D003775:Dental Polishing; D004595:Electroplating; D005708:Gallium / Q000737:chemistry*; D006047:Gold Alloys / Q000737:chemistry; D007204:Indium; D008422:Materials Testing; D010084:Oxidation-Reduction; D012834:Silver; D013499:Surface Properties; D013718:Tensile Strength; D014001:Tin / Q000737:chemistry*; D014867:Water
D000180:Acrylic Resins; D000269:Adhesives; C075320:Adlloy; D000497:Alloys; D002858:Chromium Alloys; D003722:Dental Alloys; D003738:Dental Cements; D006047:Gold Alloys; D007204:Indium; D014867:Water; D012834:Silver; D014001:Tin; C031172:4-META resin; D005708:Gallium