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Studies on the Evaluation Method of Dental Metals

Research Project

Project/Area Number 61440081
Research Category

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

Allocation TypeSingle-year Grants
Research Field 補綴理工系歯学
Research InstitutionTokyo Medical and Dental University

Principal Investigator

INOUE Masayuki D.D.S. Ph.D.  Tokyo Medical and Dental Univ. Dept.of Pros.II Associate Professor, 歯学部, 助教授 (10013872)

Co-Investigator(Kenkyū-buntansha) MATSUI Yuko D.D.S. Ph.D.  Tokyo Medical and Dental Univ. Dept.of Pros.II Research Associate, 歯学部, 助手 (20143604)
TABATA Tsuneo D.D.S. Ph.  Tokyo Medical and Dental Univ. Dept.of Pros.II Professor, 歯学部, 教授 (20013849)
Project Period (FY) 1986 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥23,600,000 (Direct Cost: ¥23,600,000)
Fiscal Year 1989: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1988: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1987: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1986: ¥21,100,000 (Direct Cost: ¥21,100,000)
KeywordsDENTAL ALLOY / CLINICAL TEST / CORROSION OF SURFACE / EPMA / 腐食表面 / 画像解析装置
Research Abstract

For the basic testing method in the evaluation of dental alloys, there are immersion tests using solutions such as hydrochloric acid, lactic acid and sodium chloride, or quantitative tests to measure the amount of dissolution electrically. However, these testing methods are not based on the corrosive changes of alloys within an oral environment. Oral cavity, especially the interdental areas between two adjacent teeth, seems to be a complicated environment for corrosion. Thus, observation of corrosion phenomena in these areas is necessary, since the evaluation method must be based on these findings.
We have observed the surface of metallic restorations and analyzed their component elements with energy dispersive type of X-ray microanalyzer (EPMA). Prior to the analysis, analytical accuracy and detection limit of the EPMA, effect of roughness or inclination of the sample surface were studied, and then the change in the composition of component elements due to corrosion was observed on the surface of the interdental area from metal restorations, such as crowns or inlays, which had been placed in the oral environment for a long period of time. Also, in order to find out the early changes of the alloys within the oral environment, standardized inlays or crowns were fabricated with gold alloys, gold-palladium-silver alloy, silver alloy arid nickel-chromium alloys, which were observed and analyzed by the method described above, and then, temporarily cemented to the abutment teeth. These restorations were removed after one week to analyze the same areas, cemented again to the abutment teeth and the same procedures were repeated after two and four weeks.
From these results, a basic testing method for alloys was studied.

Report

(5 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • 1987 Annual Research Report
  • 1986 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 松村光明: "歯冠修復用金属の評価法に関する研究 第1報 浸漬試験における金属の変化の観察" 日本補綴歯科学会雑誌. 30(5). 1198-1209 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 松村光明: "歯冠修復用金属の評価法に関する研究 第2報 ラット皮下埋込試験と浸漬試験の関連性について" 日本補綴歯科学会雑誌. 30(6). 1374-1383 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 井上昌幸: "歯周疾患の初発・増悪因子と歯冠修復処理" 日本補綴歯科学会雑誌. 30(1). 1-7 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 井上昌幸: "歯周疾患の初発・増悪因子と歯冠補綴処置の検討" 日本臨床歯周病談話会会誌. 5. 2-10 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 井上昌幸,松村光明: "補綴用金属材料の臨床的評価" 歯科ジャ-ナル. 27(5). 519-529 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 埴英郎,松村光明,井上昌幸: "歯冠修復用金属の口腔内における表面変化の観察ー第1報 X線マイクロアナライザによる分析の精度とその応用ー" 口腔病学会雑誌. 56(4). 465-472 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Mitsuaki Matsumura: "Study on Methods to Evaluate Dental Casting Alloys Part 1. Observation on Changes of Metals in Immersion Tests" J Jpn Prosthodont Soc. 30. 1198-1209 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Mitsuaki Matsumura: "Study on Methods to Evaluate Dental Casting Alloys Part 2. Relation between Subcutaneous Implant Test and Immersion Test" J Jpn Prosthodont Soc, 30 : 1374-1383, 1986.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masayuki Inoue: "Initial or Accelerative Factors of the Periodontal Disease and Fixed Prosthesis" J Jpn Prosthodont Soc, 30 : 1-7, 1987.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masayuki Inoue: "Initial or Accelerative Factors of the Periodontal Disease and Crown-Bridge Prosthesis" J J S P 5 : 2-10, 1987.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masayuki Inoue and Mitsuaki Matsumura: "Clinical Evaluation of Dental Alloys for Prosthetic Therapy" J Dental Medicine 27 : 519-529, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hideo Hani, Mitsuaki Matsumura and Masayuki Inoue: "Surface Changes of Dental Alloys in Oral Environment Part 1. Accuracy of EPMA Analysis and its Applicability to Estimate Corrosion of Dental Alloys" J Stomatol Soc Jpn, 56 : 465-472, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 松村光明: "歯冠修復用金属の評価法に関する研究 第1報 浸漬試験における金属の変化の観察" 日本補綴歯科学会雑誌. 30(5). 1198-1209 (1986)

    • Related Report
      1989 Annual Research Report
  • [Publications] 松村光明: "歯冠修復用金属の評価法に関する研究 第2報 ラット皮下埋入試験と浸漬試験の関連性について" 日本補綴歯科学会雑誌. 30(6). 1374-1383 (1986)

    • Related Report
      1989 Annual Research Report
  • [Publications] 井上昌幸: "歯周疾患の初発・増悪因子と歯冠修復処理" 日本補綴歯科学会雑誌. 30(1). 1-7 (1987)

    • Related Report
      1989 Annual Research Report
  • [Publications] 井上昌幸: "歯周疾患の初発・増悪因子と歯冠補綴処理の検討" 日本臨床歯周病談話会会誌. 5. 2-10 (1987)

    • Related Report
      1989 Annual Research Report
  • [Publications] 井上昌幸,松村光明: "補綴用金属材料の臨床的評価" 歯科ジャ-ナル. 27(5). 519-529 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] 埴英郎,松村光明,井上昌幸: "歯冠修復用金属の口腔内における表面変化の観察ー第1報 X線マイクロアナライザによる分析の精度とその応用ー" 口腔病学会雑誌. 56(4). 465-472 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 松村光明: 日本補綴歯科学会雑誌. 30. 1198-1209 (1986)

    • Related Report
      1987 Annual Research Report
  • [Publications] 松村光明: 日本補綴歯科学会雑誌. 30. 1375-1383 (1986)

    • Related Report
      1987 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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