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Study on bactericidal effect induced by laser beam irradiation by using a reaction mediator of TiO_2 powder

Research Project

Project/Area Number 21791847
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Conservative dentistry
Research InstitutionKanazawa University

Principal Investigator

FURUMOTO Tatsuaki  Kanazawa University, 機械工学系, 講師 (60432134)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
KeywordsNd:YAGレーザ / 二酸化チタン粉末 / レーザ誘起衝撃応力 / Er:YAGレーザ / 細菌 / 殺菌効果発現 / レーザー光 / 酸化チタン / 殺菌 / 温度計測 / 衝撃応力
Research Abstract

This study deals with temperature measurement of enamel surface of the human tooth during cavity preparation by the irradiation of Er : YAG laser beam. Surface temperature is measured using a three-color pyrometer and the influence of laser condition is investigated. Additionally, the dynamic stress induced in extracted human enamel by irradiation with Nd : YAG laser beam is measured. Moreover, the bactericidal effects of Nd : YAG laser by using a reaction mediator of TiO_2 are described. As a result, the surface temperature during Er : YAG laser irradiation ranges from 220 to 410℃ depending on the laser energy density and it is considerably lower than the melting point of human enamel. The induced dynamic stress was related to the volume of prepared cavity. The sterilization of bacteria might be caused by the mechanical effects induced by a laser beam irradiation.

Report

(3 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Research Products

    (21 results)

All 2011 2010 2009 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (11 results)

  • [Journal Article] Surface Temperature during Cavity Preparation on Human Tooth by Er:YAG Laser Irradiation2011

    • Author(s)
      Furumoto T., Ueda T., et al
    • Journal Title

      CIRP Annals-Manufacturing Technology

      Volume: 60,1(掲載決定)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Study on Elucidation of Bactericidal Effects Induced by Laser Beam Irradiation,Measurement of Dynamic Stress on Laser Irradiated Surface2010

    • Author(s)
      T.Furumoto, A.Kasai, H.Tachiya, A.Hosokawa, T.Ueda
    • Journal Title

      Opticsand Lasers in Engineering 48,9

      Pages: 827-833

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Study on Measurement of Dynamic Force Induced by Nd : YAG Laser Beam2010

    • Author(s)
      T.Furumoto, T.Ueda, S.Aoki, A.Kasai, A.Hosokawa, R.Tanaka, H.Tachiya
    • Journal Title

      Journal ofLaser Micro/Nanoengineering 5,1

      Pages: 59-63

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Study on Elucidation of Bactericidal Effects Induced by Laser Beam Irradiation, Measurement of Dynamic Stress on Laser Irradiated Surface2010

    • Author(s)
      Furumoto T., Ueda T., et al
    • Journal Title

      Optics and Lasers in Engineering

      Volume: 48,9 Pages: 827-833

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Study on Measurement of Dynamic Force Induced by Nd : YAG Laser Beam2010

    • Author(s)
      Furumoto.T, Ueda.T, et al.
    • Journal Title

      Journal of Laser Micro/Nanoengineering 5

      Pages: 59-63

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dental Treatment with Laser Beam, Monitoring Methods to Realize Safety Removal of Hard Tooth Tissue2009

    • Author(s)
      K.Yamada, T.Ueda, A.Hosokawa, T.Furumoto, R.Tanaka
    • Journal Title

      International Journal ofAutomation Technology 3,5

      Pages: 494-501

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication of the QuartzOptical Fiber for Dental Treatment withNd : YAG Laser, Proposal of the New Processwith TiO_2 powder2009

    • Author(s)
      T.Furumoto, S.Aoki, T.Ueda, A.Hosokawa
    • Journal Title

      Optics and Lasers in Engineering 47,9

      Pages: 941-947

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Nd:YAGレーザー照射時の誘起衝撃力の測定,吸収剤の違いによる衝撃力の変化2009

    • Author(s)
      古本達明, 和賀正明, 上田隆司, 他
    • Journal Title

      日本レーザー歯学会誌 20

      Pages: 67-73

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 長棒を用いたレーザ誘起衝撃応力の測定2009

    • Author(s)
      古本達明, 上田隆司, 他
    • Journal Title

      日本機械学会誌 75

      Pages: 2810-2815

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Surface Temperature during Cavity Preparation on Human Tooth byEr : YAG Laser Irradiation

    • Author(s)
      T.Furumoto, T.Ueda, A.Kasai, A.Hosokawa
    • Journal Title

      CIRP Annals-Manufacturing Technology in press

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Presentation] Measurement of Dynamic Stress Generated in TiO_2 Solution, Induced by Nd : YAG LaserBeam Irradiation2010

    • Author(s)
      A.Kasai, T.Furumoto, T.Ueda, M.Waga, A.Hosokawa, R.Tanaka, H.Tachiya
    • Organizer
      ICMT2010 (14th International Conference on Mechatronics Technology)
    • Place of Presentation
      大阪大学(大阪府
    • Year and Date
      2010-11-25
    • Related Report
      2010 Final Research Report
  • [Presentation] Measurement of Dynamic Stress Generated in TiO2 Solution, Induced by Nd:YAG Laser Beam Irradiation2010

    • Author(s)
      Kasai A., Furumoto T., et al
    • Organizer
      ICMT2010
    • Place of Presentation
      大阪大学(大阪府)
    • Year and Date
      2010-11-25
    • Related Report
      2010 Annual Research Report
  • [Presentation] Er:YAGレーザ照射時の歯質表面温度測定(第二報),歯色が照射部温度に及ぼす影響2010

    • Author(s)
      中谷肇, 古本達明, 上田隆司, 細川晃, 田中隆太郎
    • Organizer
      2010年度精密工学会北陸信越支部学術講演会
    • Place of Presentation
      長岡技術科学大学(新潟県)
    • Year and Date
      2010-11-06
    • Related Report
      2010 Final Research Report
  • [Presentation] Er:YAGレーザ照射時の歯質表面温度測定(第二報),歯色が照射部温度に及ぼす影響2010

    • Author(s)
      中谷馨, 古本達明, 他
    • Organizer
      2010年度精密工学会北陸信越支部学術講演会講演論文集
    • Place of Presentation
      長岡技術科学大学(新潟県)
    • Year and Date
      2010-11-06
    • Related Report
      2010 Annual Research Report
  • [Presentation] Study on Measurement of Impulse Force Induced by Nd : YAG Laser Beam2010

    • Author(s)
      T.Furumoto, T.Ueda, S.Aoki, A.Kasai, A.Hosokawa, R.Tanaka, H.Tachiya
    • Organizer
      LAMP2009 (5th InternationalCongress on Laser Advanced MaterialsProcessing)
    • Place of Presentation
      神戸コンベンションセンター(兵庫県)
    • Year and Date
      2010-07-02
    • Related Report
      2010 Final Research Report
  • [Presentation] YAGレーザによる高度爾科治療に関する研究2010

    • Author(s)
      中谷馨, 古本達明, 上田隆司, 他
    • Organizer
      精密工学会 第17回学生会員卒業研究発表講演会
    • Place of Presentation
      埼玉大学(埼玉県)
    • Year and Date
      2010-03-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] Er:YAGレーザ照射時の歯質表面温度の測定2009

    • Author(s)
      葛西惇士, 古本達明, 上田隆司, 細川晃, 田中隆太郎, 和賀正明, 杉原成良, 今野明
    • Organizer
      第21回日本レーザー歯学会総会・学術大会
    • Place of Presentation
      福岡県歯科医師会館(福岡県)
    • Year and Date
      2009-11-22
    • Related Report
      2010 Final Research Report
  • [Presentation] Er:YAGレーザー照射時の歯質表面温度の測定2009

    • Author(s)
      葛西惇士, 古本達明, 上田隆司, 他
    • Organizer
      第21回日本レーザー歯学会総会・学術大会
    • Place of Presentation
      福岡県歯科医師会館(福岡県)
    • Year and Date
      2009-11-22
    • Related Report
      2009 Annual Research Report
  • [Presentation] Er:YAGレーザ照射時の歯質表面温度測定2009

    • Author(s)
      古本達明, 上田隆司, 他
    • Organizer
      2009年度精密工学会北陸信越支部学術講演会
    • Place of Presentation
      富山大学(富山県)
    • Year and Date
      2009-11-14
    • Related Report
      2009 Annual Research Report
  • [Presentation] Study on Mechanism of Bactericidal Effect Induced by Nd : YAG Laser Irradiation,Variation of Impulse Stress with Absorbent2009

    • Author(s)
      T.Furumoto, T.Ueda, M.Waga, A.Kasai, A.Hosokawa, R.Tanaka, H.Tachiya
    • Organizer
      ICMT2009(13th International Conference on Mechatronics Technology)
    • Place of Presentation
      Waterfront Cebu City Hotel and Casino(Philippine)
    • Year and Date
      2009-10-21
    • Related Report
      2010 Final Research Report
  • [Presentation] Study on Measurement of Impulse Force Induced by Nd : YAG Laser Beam2009

    • Author(s)
      Furumoto.T, Ueda.T, et al.
    • Organizer
      ICMT2009
    • Place of Presentation
      Waterfront Cebu City Hotel(フィリピン)
    • Year and Date
      2009-10-21
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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