Dye penetration at a cobalt-chromium alloy--composite resin interface.
This study examined microleakage along the interface of resin systems bonded to cobalt-chromium alloy; a microfine resin with adhesive properties based upon methacrylic acid, and a hybrid resin containing an adhesive phosphate monomer. Specimens were thermocycled between 4 degrees, 37 degrees and 60 degrees C over 1000-10,000 cycles and placed in 0.1% neutral red dye for 7 days. Each was cut diagonally and the interfaces photographed using an optical microscope. Dye penetration was expressed as a percentage of the total length of each edge. The hybrid resin showed significantly less microleakage than the microfine resin.
Department of Prosthetic Dentistry, Eastman Dental Institute for Oral Health Care Science, University of London, UK.
N A
NA
Orchard
J A
JA
Howlett
G J
GJ
Pearson
D002858:Chromium Alloys; D003035:Cobalt; D004396:Coloring Agents; D003188:Composite Resins; D001840:Dental Bonding / Q000379:methods*; D003763:Dental Leakage / Q000175:diagnosis; D008422:Materials Testing; D008689:Methacrylates; D011140:Polyurethanes; D014520:Urethane
D002858:Chromium Alloys; D004396:Coloring Agents; D003188:Composite Resins; D008689:Methacrylates; D011140:Polyurethanes; C113531:chromasit; C113530:spectralink; C091839:urethanetrimethacrylate; C083620:cesead; D003035:Cobalt; D014520:Urethane