Bond strength of adhesive composites to dental substrates.
OBJECTIVE
The purpose of this study was to evaluate the in vitro bond strength of adhesive and traditional composites to several materials that might be encountered in clinical practice.


METHODS
An adhesive composite, an adhesive composite with a bonding agent, and a traditional composite with a bonding agent were bonded to enamel, dentin, amalgam, porcelain, and nickel-chromium-beryllium (Ni-Cr-Be) alloy. Tensile bond strengths were determined after 24 hours storage at 23 degrees C or thermocycling.


RESULTS
The use of an adhesive composite with a bonding agent resulted in increased bond strength to amalgam, porcelain, and dentin, but not to enamel or Ni-Cr-Be alloy at 23 degrees C, when compared with the adhesive composite alone. The adhesive composite with a bonding agent had higher bond strengths to amalgam, porcelain, and dentin than did the traditional composite with bonding agent, but not to enamel or Ni-Cr-Be alloy at 23 degrees C.


CONCLUSIONS
The use of a bonding agent with an adhesive composite produced higher bond strengths than the adhesive composite alone. The traditional composite bonded better to enamel and Ni-Cr-Be alloy than did the adhesive composite. Thermocycling generally had no effect on bond strengths or increased them slightly.
Berry
E A
EA
Department of Oral Biomaterials, University of Texas Houston Health Science Center, Dental Branch.
Powers
J M
JM
D000704:Analysis of Variance; D002858:Chromium Alloys; D003188:Composite Resins; D003723:Dental Amalgam; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D003743:Dental Enamel; D003776:Dental Porcelain; D003804:Dentin; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates; D012117:Resins, Synthetic; D013718:Tensile Strength
D002858:Chromium Alloys; D003188:Composite Resins; D003738:Dental Cements; D017220:Dentin-Bonding Agents; C074933:Geristore; D005899:Glass Ionomer Cements; D008689:Methacrylates; D012117:Resins, Synthetic; C074670:Marathon composite resin; D003776:Dental Porcelain; C074811:Tenure adhesive; C036884:Rexillium III; D003723:Dental Amalgam