Development of process of teeth bleachingwith low density hydrogenperoxide irradiated by red optical laser diode

• Project/Area Number: 20791417
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Prosthetic dentistry
• Research Institution: Tohoku University
• Principal Investigator: IKAI Hiroyo Tohoku University, 大学院・歯学研究科, 助教 (20431588)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 歯の漂白 / レーザーダイオード / 低濃度過酸化水素 / ヒドロキシルラジカル / 赤色光パルスレーザー / 高性能レーザー / パルス / 活性酸素 / フリーラジカル

Research Abstract

We demonstrated that hydrogen peroxide had a bleaching effect on solution containing melanin pigment. It was observed that 1 M hydrogen peroxide irradiated by laser light showed high bleaching effect in proportion to the irradiation time. Since the free radicals generated in this reaction system was mainly hydroxyl radical, it has been suggested objectively for the first time that hydroxyl radical is involved in the mechanism of bleaching.

Research Products

• [Journal Article] Masahiro Kohno The evaluation of the dental disinfbction device with low concentration of H2O2 and laser diode (2009)
  • Author(s): hiroyo Ikai, Taro Kanno, Keisuke Nakamura, Eisei Hayashi, Akihito Kudo
  • Journal Title: Interface Oral Health Science Pages: 259-261
• [Presentation] Masahiro Kohno The evaluation of the dental disinfection device with low concentration of H2O2 and laser diode (2009)
  • Author(s): Hiroyo Ikai, Taro Kanno, Keisuke Nakamura、Eisei Hayashi, Akihito Kudo
  • Organizer: 3rd. Interface Oral Health Science
  • Place of Presentation: Sendai
• [Presentation] The evaluation of the dental disinfection device with low concentration of H202 and laser diode (2009)
  • Author(s): 猪飼紘代
  • Organizer: インターフェイス口腔健康科学
  • Place of Presentation: 仙台
• [Presentation] LED照射により活性化された低濃度過酸化水素のCandida albicansに対する殺菌効果 (2008)
  • Author(s): 猪飼紘代, 菅野太郎, 中村圭祐, 林栄成, 目代貴之, 岩澤篤郎, 工藤朗人, 河野雅弘
  • Organizer: 第117回日本補綴歯科学会学術大会
  • Place of Presentation: 名古屋
• [Presentation] 低濃度過酸化水素とLDを高度利用した口腔内感染除去装置の殺菌効果第1報 (2008)
  • Author(s): 猪飼紘代, 菅野太郎, 林栄成, 中村圭祐, 目代貴之, 工藤朗人, 岩澤篤郎, 河野雅弘
  • Organizer: 第117回日本補綴歯科学会学術大会
  • Place of Presentation: 名古屋
• [Presentation] LED照射により活性化された低濃度過酸化水素のCandida albicansに対する殺菌効果 (2008)
  • Author(s): 猪飼紘代
  • Organizer: 日本補綴歯科学会
  • Place of Presentation: 名古屋
• [Presentation] 低濃度過酸化水素とLDを高度利用した口腔内感染除去装置の殺菌効果第1報 (2008)
  • Author(s): 猪飼紘代
  • Organizer: 日本補綴歯科学会
  • Place of Presentation: 名古屋