Influence of acid-base conditioning on the bond strength of five luting agents employing self-etching primer to enamel and dentin.
The purpose of this study was to evaluate the effect of multi-step conditioning (PA-AD conditioning) with phosphoric acid and sodium hypochlorite on the bond strength of five luting materials to enamel and dentin. Three commercial self-etching/priming systems (Panavia, Linkmax, and Multibond) and two experimental systems (ED/Super-Bond and EDFe/Super-Bond) were used. The surfaces of bovine enamel or dentin were bonded to a stainless steel rod. Tensile bond strength was determined after 24-hour immersion in water. PA-AD conditioning significantly improved the bond strength between enamel and three of the systems (Panavia, ED/Super-Bond, and EDFe/Super-Bond), but did not have any effect on Linkmax and Multibond. Likewise, PA-AD conditioning did not significantly improve the bond strength of Panavia, Linkmax, Multibond, and ED/Super-Bond to dentin. Highest bond strength to dentin (19.7 MPa) was obtained when self-etching primer containing ferric chloride (EDFe/Super-Bond) was used, but additional PA-AD conditioning significantly weakened the bonding (12.6 MPa).
Yokomichi
Rie
R
Division of Fixed Prosthodontics and Oral Rehabilitation, Nagasaki University Graduate School of Biomedical Science, 1-7-1, Sakamoto, Nagasaki 852-8588, Japan.
Taira
Yohsuke
Y
Soeno
Kohyoh
K
Atsuta
Mitsuru
M
D000704:Analysis of Variance; D000818:Animals; D001896:Boron Compounds / Q000737:chemistry; D002417:Cattle; D002712:Chlorides; D003188:Composite Resins; D001840:Dental Bonding; D003743:Dental Enamel / Q000187:drug effects; D045662:Dental Etching / Q000379:methods*; D003799:Dental Stress Analysis; D003804:Dentin / Q000187:drug effects; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005290:Ferric Compounds; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D010756:Phosphoric Acids / Q000494:pharmacology; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry; D012973:Sodium Hypochlorite / Q000494:pharmacology; D013718:Tensile Strength
D001896:Boron Compounds; D002712:Chlorides; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C500742:ED Primer II; D005290:Ferric Compounds; C470486:Linkmax; D008689:Methacrylates; D008768:Methylmethacrylates; C482145:Multibond; C438843:Panavia-Fluoro; D010756:Phosphoric Acids; D019279:Resin Cements; C049495:Super-bond; D012973:Sodium Hypochlorite; C030242:phosphoric acid; C024555:ferric chloride