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Quintessence International
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Quintessence Int 23 (1992), No. 1     1. Jan. 1992
Quintessence Int 23 (1992), No. 1  (01.01.1992)

Page 65-69


Shear bond strengths of prosthodontic adhesive systems to a nickel-chromium-beryllium alloy
Kolodney jr. / Puckett / Breazeale / Patterson / Lentz
Panavia, a composite resin luting agent containing phosphate monomers, bonds chemically to air-abraded base metal alloys and is particularly suited for cementing resin-bonded retainers. Another adhesive methodology (Silicoater system) incorporates a pyrolytically applied silica layer to metal substrates to promote bonding of a resin adhesive. The object of this study was to compare prosthodontic adhesive systems that incorporated the Silicoater system and/or Panavia. The results showed that the surface treatment that provided significantly higher shear bond strengths was the Silicoater system and a layer of unfilled resin. A second test evaluated use of Panavia as a metal opaquing material beneath laboratory light-curing resins. Results showed that Panavia Opaque materi al was displaced peripherally during placement of overlying laboratory composite resin veneers. This resulted in an uneven intermediate layer of Panavia.