title: A study of the effects of irradiation on the polymerization of dual-cured self-etching bonding system using electron spin resonance (ESR) spectroscopy.
abstract: The purpose of this study was to investigate the effect of irradiation on the polymerization behavior of a bonding agent of a dual-cured self-etching bonding system. By means of electron spin resonance spectroscopy, it was shown that the concentration of polymer radicals in samples cured chemically without irradiation was closely similar to that in samples dual-cured under irradiation. There was no significant difference in the time required to reach the maximum spin concentration between these two sample groups, thereby showing that the radical generation rates were similar. Findings of this study revealed that the dual-cured self-etching bonding system tested in this study was effective in polymerization in regions where irradiated light could hardly reach.
authors.affiliation: Division of Prosthetics, Department of Oral and Maxillofacial Rehabilitation, Kanagawa Dental College, 82 Inaoka-cho, Yokosuka-shi, Kanagawa 238-8580, Japan.
authors.forename: Naho
authors.initials: N
authors.lastname: Hamano
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ino
authors.forename: Satoru
authors.initials: S
authors.lastname: Hojo
authors.forename: Fumihiko
authors.initials: F
authors.lastname: Yoshino
authors.forename: Tomonaga
authors.initials: T
authors.lastname: Watanabe
authors.forename: Yuki
authors.initials: Y
authors.lastname: Katsumata
authors.forename: Masaichi-Chang-il
authors.initials: MC
authors.lastname: Lee
authors.forename: Minoru
authors.initials: M
authors.lastname: Toyoda
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry / Q000528:radiation effects*; D003188:Composite Resins / Q000737:chemistry / Q000528:radiation effects*; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents / Q000737:chemistry / Q000528:radiation effects; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals / Q000032:analysis; D008689:Methacrylates / Q000737:chemistry / Q000528:radiation effects*; D044367:Phase Transition; D019279:Resin Cements / Q000737:chemistry / Q000528:radiation effects*
chemical_list: C469237:Clearfil Core; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C500742:ED Primer II; D005609:Free Radicals; D008689:Methacrylates; C481355:Photobond; D019279:Resin Cements; D017438:Bisphenol A-Glycidyl Methacrylate