In vitro bonding of prosthodontic adhesives to dental alloys.
In vitro tensile bond strengths were determined for three adhesive cements and two resin-bonded bridge cements to two alloys, each prepared by two methods: sandblasted Ni-Cr-Be alloy (I), electro-etched Ni-Cr-Be alloy (II), sandblasted Type IV gold alloy (III), and tin-plated Type IV gold alloy (IV). Storage conditions of 24 hours at 37 degrees C and 30 days at 70 degrees C were evaluated. The highest bond strengths were obtained for the electro-etched Ni-Cr-Be alloy, and all bond failures were cohesive. At both 24 hours and 30 days, the adhesive cements had the highest bond strengths to the other alloy/surface preparations (I, III, and IV). The adhesive cements usually failed cohesively under these conditions, whereas the resin-bonded bridge cements failed adhesively at the cement-alloy interface. Storage for 30 days at 70 degrees C caused average decreases of 30%, 5%, 15%, and 32% for alloy/surface preparations I to IV, respectively.
Watanabe
F
F
School of Dentistry, Nippon Dental University, Niigata, Japan.
Powers
J M
JM
Lorey
R E
RE
D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate; D001896:Boron Compounds; D002858:Chromium Alloys; D001840:Dental Bonding; D003738:Dental Cements; D003799:Dental Stress Analysis; D004338:Drug Combinations; D004572:Electrolysis; D017276:Friction; D006047:Gold Alloys; D008422:Materials Testing; D008689:Methacrylates; D008768:Methylmethacrylates; D008855:Microscopy, Electron, Scanning; D010710:Phosphates; D019279:Resin Cements; D013499:Surface Properties; D013718:Tensile Strength; D014052:Toluidines
C083347:Adhesive By Choice; D001896:Boron Compounds; D002858:Chromium Alloys; D003738:Dental Cements; D004338:Drug Combinations; D006047:Gold Alloys; D008689:Methacrylates; D008768:Methylmethacrylates; D010710:Phosphates; D019279:Resin Cements; D014052:Toluidines; C081195:Maryland Bridge Cementation Paste; D017438:Bisphenol A-Glycidyl Methacrylate; C052304:Panavia EX; C049495:Super-bond