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Bleaching of discolored teeth with high frequwmy current

Research Project

Project/Area Number 04671168
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Conservative dentistry
Research InstitutionSHOWA UNIVERSITY

Principal Investigator

HISAMITSU Hisashi  Showa U, Orthodont. prof, 歯学部, 教授 (30092430)

Co-Investigator(Kenkyū-buntansha) KOBAYASHI Noriko  Showa U, Orthodont. Assistant, 歯学部, 助手 (10245805)
MATSUBA Hiroshi  Showa U, Orthodont. Assistant, 歯学部, 助手 (90241025)
SUZUKI Toshimitsu  Showa U, Orthodont. A.prof, 歯学部, 助教授 (80154558)
下村 博  昭和大学, 歯学部, 講師 (80196568)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1993: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1992: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsdiscolored teeth / teeth bleaching / high requency current / hydrogen peroxide / 漂白 / 高周波 / 半波整流 / ヒト抜去歯 / 電気メス / 色差 / 酸処理
Research Abstract

From the results of the colre analyqer test, it was obvious that color of the surfoce brightened and the yellowish color was slightly gone after bleaching. The etching procedure decreased L* and b*.
However, the bleaching theatment resulted in a gradual incrase of L* and decrease of b*. The etching procedure rainforced the efficaay of bleaching. To compaire the four bleaching agents in dE, there was a signigificant difference only vetween H_2O_2 and Hi-Lite in the no-etching group.
From the SEM observation, the micro struct* of the enamel prisms were destroyed by the bkeaching procedune.The morphalogical chage of the enamel aurface by high frequwncy current was obserued.
This new etching-bleaching method for discolored teeth using high frequency current was found to be effectiue and clinically safe.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report

Research Products

(3 results)

All Other

All Publications (3 results)

  • [Publications] 松葉浩志 小杉紀子 他: "高周波電流を用いた変色歯の漂白" 歯科審美. 7(発表予定). (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Hiroshi MATSUBA, Noriko KOSUGI, Teruo TOKO, TOshimistu SUZUKI, Hisashi HISAMITSU: "tooth Bleacing using high frequency current" Tournal of Esthetic Dentistry. Vol.6 No.3, (Subimithed). (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 松葉,浩志・小杉,紀子 他: "高周波電流を用いた変色歯の漂白" 歯科審美. 7(発表予定). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1992-03-31   Modified: 2016-04-21  

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