title: Bond strength of five current adhesives to caries-affected dentin.
abstract: Five current dentin adhesives were evaluated for their ability to bond to caries-affected dentin. The materials were: total etch [Solid Bond (SB)], two self-etch [Clearfil SE Bond (CSE), Etch and Prime (EP)], two one bottle [Prime and Bond 2.1 (PB), One Coat Bond (OCB)]. Sixty extracted molar teeth with proximal caries (mesial or distal) extending into mid-dentin were used. By grinding normal and caries-affected proximal surfaces, flat dentin surfaces were obtained. The surfaces were then bonded with each adhesive system and composite resins were added to the surfaces by packing the material into a cylindrical-shaped plastic matrix with an internal diameter of 2.5 mm and height of 3 mm. Shear bond testing was performed following 10 days incubation of specimens in distilled water at 37 degrees C. Results were analysed by Kruskal-Wallis ANOVA, and Mann-Whitney U multiple comparison test and Wilcoxon rank tests. The results obtained with CSE, SB, and EP were similar in caries affected and normal dentin (P > 0.05). But bonds made to normal dentin with OCB and PB were lower (P < 0.05) than bonds to caries-affected dentin. Bonding to caries-affected dentin with CSE (24.49 +/- 5.38), SB (21.49 +/- 9.15), and EP (21.19 +/- 9.17) showed shear bond strengths higher than OCB (17.43 +/- 9.78) and PB (14.10 +/- 7.94) (P < 0.05). Bonding to normal dentin with CSE (29.91 +/- 8.95) was the highest (P < 0.05). SB (21.17 +/- 5.41) and EP (17.45 +/- 6.21) showed shear bond strengths higher than OCB (11.99 +/- 10.15) and PB (10.57 +/- 4.56) (P < 0.05).
authors.affiliation: Department of Operative Dentistry, Faculty of Dentistry, University of Selçuk, Konya, Turkey. asengun@seluk.edu.tr
authors.forename: A
authors.initials: A
authors.lastname: Sengün
authors.forename: N
authors.initials: N
authors.lastname: Unlü
authors.forename: F
authors.initials: F
authors.lastname: Ozer
authors.forename: B
authors.initials: B
authors.lastname: OztUrk
mesh_terms: D000096:Acetone; D000704:Analysis of Variance; D001840:Dental Bonding; D003731:Dental Caries / Q000473:pathology; D003804:Dentin / Q000737:chemistry / Q000473:pathology*; D003806:Dentin Permeability; D017220:Dentin-Bonding Agents; D011756:Diphosphates; D004852:Epoxy Compounds; D000431:Ethanol; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates; D008963:Molar; D010710:Phosphates; D011109:Polymethacrylic Acids; D011897:Random Allocation; D019279:Resin Cements; D033081:Shear Strength; D018709:Statistics, Nonparametric
chemical_list: C438313:Clearfil SE Bond; D017220:Dentin-Bonding Agents; D011756:Diphosphates; D004852:Epoxy Compounds; C121187:Etch&Prime; C469823:Etch&Prime 3.0; D008689:Methacrylates; C426984:One Coat Bond; D010710:Phosphates; D011109:Polymethacrylic Acids; D019279:Resin Cements; C407604:Solid Bond; C444444:prime and bond 2.1; D000096:Acetone; D000431:Ethanol