title: Evaluation of bond strength of self-etching adhesives having different pH on primary and permanent teeth dentin.
abstract: OBJECTIVE
  The purpose of this in vitro study was to evaluate the dentin shear bond strength of 4 self-etching adhesives having a different pH on primary and permanent teeth dentin.
  
  
  METHODS
  The occlusal enamel was removed from 60 freshly extracted third molar and 60 primary second molar human teeth, which were randomly separated into 4 groups (n = 15). Four adhesive systems were applied: G-Bond (GC Corporation, Tokyo, Japan, pH: 1.5), Futura Bond M (Voco, Cuxhaver, Germany, pH: 1.4), Adper Prompt L-Pop (3M/ESPE, St Paul, MN, USA, pH: 0.8), and Clearfil S(3) Bond (Kuraray Medical, Tokyo, Japan, pH: 2.7) according to the manufacturer's instructions. After the application of dentin bonding agents, a composite resin material (Z250 Restorative A2, 3M ESPE, St. Paul, MN, USA) for permanent teeth and a compomer resin material (Dyract Extra A2, Dentsply, Konstanz, Germany) for primary teeth was applied onto the prepared dentin surfaces. The data were obtained by using a universal test machine at a crosshead speed of 1 mm/min.
  
  
  RESULTS
  The mean values were compared using Tukey's multiple comparison test. Although there was no difference between adhesives on the permanent teeth, Clearfil S3 adhesive showed higher bond (18.07 ± 0.58 MPa) (P>0.05). Lower bond strength values were obtained from primary teeth and especially G-Bond adhesive (9.36 ± 0.48 MPa) (P<0.05).
  
  
  CONCLUSIONS
  Self-etching adhesives with different pH and solvent types can be used successfully for permanent teeth dentin but adhesives with low pH did not provide greater shear bond strength values.
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Ondokuz Mayis University, Samsun - Turkey.
authors.forename: Bilal
authors.initials: B
authors.lastname: Ozmen
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Ondokuz Mayis University, Samsun - Turkey.
authors.forename: Alp Erdin
authors.initials: AE
authors.lastname: Koyuturk
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Ishik University, Erbil - Iraq.
authors.forename: Ugur
authors.initials: U
authors.lastname: Tokay
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Ondokuz Mayis University, Samsun - Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Cortcu
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Ondokuz Mayis University, Samsun - Turkey.
authors.forename: Mustafa Erhan
authors.initials: ME
authors.lastname: Sari
mesh_terms: D000269:Adhesives / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D003804:Dentin / Q000737:chemistry*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D008963:Molar / Q000737:chemistry; D033081:Shear Strength; D014094:Tooth, Deciduous / Q000737:chemistry
chemical_list: D000269:Adhesives; D003764:Dental Materials