title: Surface treatment with ascorbic acid and ferric chloride improves the micro-tensile bond strength of 4-META/MMA-TBB resin to dentin.
abstract: OBJECTIVE
  The purpose of this study was to investigate the efficacy of an experimental dentin conditioner consisting of ascorbic acid (AA) and ferric chloride (Fe), in terms of micro-tensile bond strength (microTBS).
  
  
  METHODS
  Five experimental solutions were prepared and evaluated: 10% AA and 5% Fe (10AA-5Fe); 10% AA and 0% Fe (10AA-0Fe); 0% AA and 5% Fe (0AA-5Fe); 10% citric acid and 3% ferric chloride (10-3); and, 0% AA and 0% Fe (0AA-0Fe). Flattened dentin surfaces were treated with each of the experimental solutions. A composite material rod was bonded to the dentin surface with a self curing luting agent (4-META/MMA-TBB resin). The specimens were stressed to failure under tension after 24h of immersion in water.
  
  
  RESULTS
  The 10AA-5Fe group showed significantly higher bond strength than the 10AA-0Fe, 0AA-5Fe, 10-3 and AA-0Fe groups.
  
  
  CONCLUSIONS
  It was found that an experimental conditioner consisting of 10% ascorbic acid and 5% ferric chloride significantly improved the micro-tensile bond strength between 4-META/MMA-TBB resin and dentin.
authors.affiliation: Nagasaki University, Graduate School of Biomedical Sciences, Department of Translational Medicine Graduate School of Biomedical Sciences, Division of Applied Prosthodontics, 1-7-1 Sakamoto, Nagasaki City 852-8588, Japan. soeno@nagasaki-u.ac.jp
authors.forename: Kohyoh
authors.initials: K
authors.lastname: Soeno
authors.forename: Yohsuke
authors.initials: Y
authors.lastname: Taira
authors.forename: Ryo
authors.initials: R
authors.lastname: Jimbo
authors.forename: Takashi
authors.initials: T
authors.lastname: Sawase
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D000704:Analysis of Variance; D001205:Ascorbic Acid / Q000737:chemistry; D001896:Boron Compounds / Q000737:chemistry; D002712:Chlorides; D001840:Dental Bonding; D003799:Dental Stress Analysis; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure; D003806:Dentin Permeability / Q000187:drug effects*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D004338:Drug Combinations; D005290:Ferric Compounds / Q000737:chemistry; D006801:Humans; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D008964:Molar, Third; D019279:Resin Cements / Q000737:chemistry*; D013499:Surface Properties; D013718:Tensile Strength / Q000187:drug effects*
chemical_list: D001896:Boron Compounds; D002712:Chlorides; D017220:Dentin-Bonding Agents; D004338:Drug Combinations; D005290:Ferric Compounds; D008689:Methacrylates; D008768:Methylmethacrylates; D019279:Resin Cements; C476987:methylmethacrylate-tributylborane resin; C034139:4-methacryloxyethyltrimellitic acid anhydride; D001205:Ascorbic Acid; C024555:ferric chloride