title: Corrosive effect of disinfection solution containing hydroxyl radicals generated by photolysis of H(2)O(2) on dental metals.
abstract: The purpose of the present study was to evaluate the corrosive effect of disinfection solution containing hydroxyl radicals generated by photolysis of H(2)O(2)on dental metals. Static immersion test was performed on four different dental metals: Ti, Type 316L stainless steel, Ag-Pd-Cu-Au alloy, and Co-Cr alloy. Metal specimens were immersed in 1 M H(2)O(2)(=3.4%) with or without light-emitting diode (LED) light irradiation (wavelength: 400 nm) for 1 week, and then the amounts of released ions were analyzed. Corrosive effect of the disinfection solution containing hydroxyl radicals on any dental metals tested in the present study never exceeded that of H(2)O(2) alone. Therefore, disinfection systems based on the photolysis of H(2)O(2) for the cleaning of dentures and treatment of oral infectious diseases would not cause problematic metal corrosion whenever the concentration of H(2)O(2) does not exceed 3%, which is a concentration used as an oral disinfectant.
authors.affiliation: Laboratory for Redox Regulation, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan. keisuke@m.tohoku.ac.jp
authors.forename: Keisuke
authors.initials: K
authors.lastname: Nakamura
authors.forename: Yasutomo
authors.initials: Y
authors.lastname: Yamada
authors.forename: Yukyo
authors.initials: Y
authors.lastname: Takada
authors.forename: Takayuki
authors.initials: T
authors.lastname: Mokudai
authors.forename: Hiroyo
authors.initials: H
authors.lastname: Ikai
authors.forename: Ryoichi
authors.initials: R
authors.lastname: Inagaki
authors.forename: Taro
authors.initials: T
authors.lastname: Kanno
authors.forename: Keiichi
authors.initials: K
authors.lastname: Sasaki
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kohno
authors.forename: Yoshimi
authors.initials: Y
authors.lastname: Niwano
mesh_terms: D002858:Chromium Alloys / Q000737:chemistry; D003343:Corrosion; D003722:Dental Alloys / Q000737:chemistry*; D019551:Dental Disinfectants / Q000737:chemistry* / Q000528:radiation effects; D006861:Hydrogen Peroxide / Q000737:chemistry* / Q000528:radiation effects; D017665:Hydroxyl Radical / Q000737:chemistry; D008422:Materials Testing; D010782:Photolysis; D013193:Stainless Steel / Q000737:chemistry; D013997:Time Factors; D014025:Titanium / Q000737:chemistry
chemical_list: C120982:Ag-Pd-Cu-Au alloy; D002858:Chromium Alloys; D003722:Dental Alloys; D019551:Dental Disinfectants; D013193:Stainless Steel; D017665:Hydroxyl Radical; D006861:Hydrogen Peroxide; D014025:Titanium