Microleakage at the resin-alloy interface of chemically retained composite resins for cast restorations.
New retentive mechanisms between veneering resins and casting alloys are claimed to have a chemical bond that results in a high bond strength combined with low microleakage between the veneering resin and cast restoration. This study compared the microleakage of four chemical bonding mechanisms when three veneering resins were bonded to two dental casting alloys. Resin-veneered alloy disks were immersed in red India ink and kept at 37 degrees C for 72 hours. The disks were then bench dried for 24 hours. The resin veneer was sectioned into eight sectors in an engineering milling machine and these resin sectors were removed to display the microleakage pattern. It was concluded that (1) no microleakage was found in two combinations, and (2) the highest microleakage was with Sr-Isosit-N/Panavia EX/Firmilay combinations.
Strygler
H
H
University of Washington, School of Dentistry, Seattle.
Nicholls
J I
JI
Townsend
J D
JD
D000180:Acrylic Resins / Q000737:chemistry; D000269:Adhesives / Q000737:chemistry; D002244:Carbon; D002858:Chromium Alloys / Q000737:chemistry; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry*; D001840:Dental Bonding; D003763:Dental Leakage / Q000175:diagnosis*; D003776:Dental Porcelain / Q000737:chemistry; D003801:Dental Veneers; D006047:Gold Alloys / Q000737:chemistry; D008422:Materials Testing; D008689:Methacrylates; D010710:Phosphates / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D019279:Resin Cements; D012821:Silanes / Q000737:chemistry; D013194:Staining and Labeling; D013499:Surface Properties; D014520:Urethane / Q000737:chemistry
D000180:Acrylic Resins; D000269:Adhesives; D002858:Chromium Alloys; D004396:Coloring Agents; C029012:Composite Dental Resin; D003188:Composite Resins; D003722:Dental Alloys; D006047:Gold Alloys; D008689:Methacrylates; D010710:Phosphates; D011140:Polyurethanes; D019279:Resin Cements; D012821:Silanes; C028433:chinese ink; C046981:ESPE Visio-Gem; D003776:Dental Porcelain; D014520:Urethane; C513704:Isosit; D002244:Carbon; C031172:4-META resin; C052304:Panavia EX; C057365:Dentacolor