Effect of porcelain surface treatments on bond strengths of composite resin bonded to porcelain.
A laboratory study was conducted to evaluate the bond strength of composite resin bonded to porcelain surfaces by use of a variety of treatment regimens with the All-Bond 2 adhesive system. There were significant differences in the 24-hour bond strengths between several of the surface treatment methods. The mean shear bond strength after 24 hours of water storage ranged from 10.6 +/- 2.3 MPa to 25.0 +/- 4.4 MPa. Nine of the surface treatment methods showed a significant decrease (p < 0.05) in bond strengths after 3 months of water storage and thermocycling. After 3 months, the bond strengths ranged 0.1 +/- 0.1 MPa to 17.4 +/- 2.0 MPa. Porcelain surface treatment with aluminum oxide air abrasion followed by hydrofluoric acid, a silane coupling agent, and an unfilled resin produced a bond strength after 3 months' water storage and thermocycling that was significantly greater (p < 0.05) than the other nine porcelain surface-treatment techniques. Visual examination of the debonded specimens generally showed cohesive failures in porcelain for the treatment groups with a mean bond strength above 13 MPa.
Thurmond
J W
JW
Department of Oral Diagnosis and Radiology, Creighton University School of Dentistry, Omaha, Neb.
Barkmeier
W W
WW
Wilwerding
T M
TM
D000269:Adhesives / Q000737:chemistry; D000388:Air; D000537:Aluminum Oxide / Q000737:chemistry; D002858:Chromium Alloys / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods*; D003776:Dental Porcelain / Q000737:chemistry*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005069:Evaluation Studies as Topic; D006858:Hydrofluoric Acid / Q000737:chemistry; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry*; D012821:Silanes / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D014867:Water
D000269:Adhesives; C074864:All-Bond system; D002858:Chromium Alloys; D003188:Composite Resins; D003722:Dental Alloys; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D012821:Silanes; D014867:Water; C078905:Bisfil; D003776:Dental Porcelain; C036884:Rexillium III; D000537:Aluminum Oxide; D006858:Hydrofluoric Acid