The low energy electron beam improves the safety of the prosthesis in an ultra-aged society and reduces sterilization costs

• Project/Area Number: 20390495
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Prosthetic dentistry
• Research Institution: Meirin College
• Principal Investigator: NOMURA Akiko 明倫短期大学, 歯科技工士学科, 教授 (80134948)
• Co-Investigator(Kenkyū-buntansha): SANO Yuko 明倫短期大学, 歯科技工士学科, 教授 (30300099) ; NOMURA Shuichi 新潟大学, 医歯学系, 教授 (40018859) ; ITOH Keiichi 明倫短期大学, 歯科技工士学科, 助教 (60389955) ; KANATANI Mitsugu 新潟大学, 医歯学系, 助教 (40177499)
• Project Period (FY): 2008 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000); Fiscal Year 2011: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2010: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2008: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
• Keywords: 低エネルギー電子線 / 電子線照射条件 / メチルメタクリレート樹脂レジンアレルギー / 残留モノマー / 殺菌 / 歯科技工 / 歯科補綴治療 / メチルメタクリレート樹脂 / レジンアレルギー / 無害化 / MMAレジン

Research Abstract

The present study has realized the effective use of electron beams in order to reduce residual monomers, for the purpose of providing safe dentures to senior citizens. The low-energy electron beam irradiation system was newly designed for dentures. This has enabled the denture surface with complicated profiles to be irradiated. The quantity of eluted MMA monomer decreased under irradiation. It was shown that E. coli cells on PMMA resin plate died when subjected to electron beam irradiation.

Research Products

• [Presentation] Surface Modification of PMMA by LEB irradiation (2011)
  • Author(s): Ito K, Okawa S, Kanatani M, Yamaga Y, Kaneko H, Nomura A, Nomura S, Watanabe K
  • Organizer: International Dental Materials Congress 2011 & 第57回日本歯科理工学会学術講演会
  • Place of Presentation: Soul, Korea
  • Year and Date: 2011-05-29
• [Presentation] Surface Modification of PMMA by LEB irradiation (2011)
  • Author(s): Ito K, Okawa S, Kanatani M, Yamaga Y, Kaneko H, Nomura A, Nomura S, Watanabe K
  • Organizer: International Dental Materials Congress 2011 & 第57回日本歯科理工学会学術講演会
  • Place of Presentation: Soul
  • Year and Date: 2011-05-29
• [Presentation] Effect of LEB irradiation on chemical properties of PMMA (2011)
  • Author(s): Ito K, Okawa S, Kanatani M, Yamaga Y, Kaneko H, Nomura A, Nomura S, Watanabe K
  • Organizer: International Symposium on Oral Health Education and Research
  • Place of Presentation: Balikpapan, Indonesia
• [Presentation] Effect of LEB irradiation on surface chemical properties of PMMA (2011)
  • Author(s): Ito K, Okawa S, Kanatani M, Yamaga Y, Kaneko H, Nomura A, Nomura S, Watanabe K
  • Organizer: The 7th Biennial Meeting of Asian Academy of Prosthodontics
  • Place of Presentation: Shanghai, China
• [Presentation] Surface Modification Of PMMA Through LEB Irradiation-Electron Penetration Depth Distribution And Surface Absorbed Dose Distribution- (2011)
  • Author(s): Nomura A, Nomura S, Ito K, Kanatani M, Sano Y, Haraguchi D
  • Organizer: 14th Meeting of the International College of Prosthodontists
  • Place of Presentation: Hawaii, USA
• [Presentation] Surface Modification of PMMA through LEB Irradiation-Its Effect on Adhesive Strength- (2011)
  • Author(s): Ito K, Kanatani M, Nomura A, Nomura S, Sano Y
  • Organizer: 14th Meeting of the International College of Prosthodontists
  • Place of Presentation: Hawaii, USA
• [Presentation] Surface Modification of PMMA Through LEB Irradiation-Electron Penetration Depth Distribution and Surface Absorbed Dose Distribution- (2011)
  • Author(s): Nomura A, Nomura S, Ito K, Kanatani M, Sano Y, Haraguchi D
  • Organizer: 14th Meeting of the International College of Prosthodontists
  • Place of Presentation: Hilton Waikoloa (Hawaii)
• [Presentation] Surface Modification of PMMA Through LEB Irradiation-Its Effect on Adhesive Strength- (2011)
  • Author(s): Ito K, Kanatani M, Nomura A, Nomura S, Sano Y
  • Organizer: 14th Meeting of the International College of Prosthodontists
  • Place of Presentation: Hilton Waikoloa (Hawaii)
• [Presentation] Effect of LEB Irradiation on Surface Chemical Properties of PMMA (2011)
  • Author(s): Ito K, Okawa S, Kanatani M, Nomura A, Nomura S, Watanabe K, et al
  • Organizer: The 7th Biennial Meeting of Asian Academy of Prosthodontics
  • Place of Presentation: Shanghai World Expo Exhibition and Convention Center (Shanghai)
• [Presentation] 低エネルギー電子線照射がPMMA表面に与える影響 (2011)
  • Author(s): 伊藤恭輔, 大川成剛, 金谷貢, 金子広美, 山鹿義郎, 野村章子, 野村修一, 渡辺孝一
  • Organizer: 第58回日本歯科理工学会学術講演会
  • Place of Presentation: 奥羽大学(福島県)
• [Presentation] Properties of methyl methacrylate resin following low-energy electron beam irradiation (2010)
  • Author(s): Nomura A, Nomura S, Ito K, Sano Y, and Kanatani M
  • Organizer: 88th General Session and Exhibition of the IADR
  • Place of Presentation: Barcelona, Spain
  • Year and Date: 2010-07-14
• [Presentation] Properties of methyl methacrylate resin following low-energy electron beam irradiation (2010)
  • Author(s): A.Nomura
  • Organizer: 88th General Session & Exhibition of the IADR
  • Place of Presentation: Barcelona
  • Year and Date: 2010-07-14
• [Presentation] 低エネルギー電子線照射を行ったメタクリレート系樹脂の接着強さについて (2010)
  • Author(s): 伊藤圭一,馬場勝也,金谷貢,野村章子,佐野裕子
  • Organizer: 日本歯科技工学会第32回学術大会
  • Place of Presentation: 名古屋
• [Presentation] 低エネルギー電子線照射を行ったメチルメタクリレート系樹脂の物性について (2009)
  • Author(s): 伊藤圭一,野村章子,石川俊一,金谷貢,佐野裕子
  • Organizer: 日本歯科技工学会第31回学術大会
  • Place of Presentation: 福岡
• [Presentation] Surface Modification of Methacrylate Prosthetic Material through LEB Irradiation (2009)
  • Author(s): Nomura A, Nomura S, Ito K, Sano Y, Kanatani M
  • Organizer: 87th General Session & Exhibition of the IADR
  • Place of Presentation: Miami, USA
• [Presentation] Surface Modification of Methacrylate Prosthetic Material through LEB Irradiation (2009)
  • Author(s): A.NOMURA,, S.NOMURA, K.ITOH, Y.SANO, M.KANATANI
  • Organizer: 87th General Session & Exhibition of the IADR
  • Place of Presentation: Miami
• [Presentation] 低エネルギー電子線照射を行ったメチルメタクリレート系樹脂の物性について (2009)
  • Author(s): 伊藤圭一, 野村章子, 石川俊一, 金谷貢, 佐野裕子
  • Organizer: 日本歯科技工学会第31回学術大会プログラム講演抄録, 30巻特別号
  • Place of Presentation: 福岡
• [Presentation] Surface Modification of Methacrylate Prosthetic Material through LEB Irradiation (2009)
  • Author(s): A.NOMURA, S.NOMURA, K.ITOH, Y.SANO, M.KANATANI
  • Organizer: 87th General Session & Exhibition of the IADR
  • Place of Presentation: USA
• [Presentation] 高齢者や有病者に安全な義歯を提供するための低エネルギー電子線の利用 (2008)
  • Author(s): 伊藤圭一,野村章子,石川俊一,佐野裕子,花田晃治,金谷貢,野村修一
  • Organizer: 第21回日本歯科医学会総会
  • Place of Presentation: パシフィコ横浜