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.
Orchard
N A
NA
Department of Prosthetic Dentistry, Eastman Dental Institute for Oral Health Care Science, University of London, UK.
Howlett
J A
JA
Pearson
G J
GJ
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