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A Basic Study on the Porcelain Veneered Crown by Sintered Metal Techinique

Research Project

Project/Area Number 05671617
Research Category

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

Allocation TypeSingle-year Grants
Research Field 補綴理工系歯学
Research InstitutionTohoku Umiversity

Principal Investigator

YODA Masanobu (1994)  Tohoku University, School of Dentistry, Associate Professor, 歯学部, 助教授 (70005073)

木村 幸平 (1993)  東北大学, 歯学部, 教授 (40108551)

Co-Investigator(Kenkyū-buntansha) TOYODA Johji  Tohoku University, School of Dentistry, Assistant Professor, 歯学部・附属病院, 助手 (00250796)
ISHIBASHI Minoru  Tohoku University, School of Dentistry, Assistant Professor, 歯学部, 助手 (40231138)
OKUNO Osamu  Tohoku University, School of Dentistry, Professor, 歯学部, 教授 (50014080)
依田 正信  東北大学, 歯学部, 助教授 (70005073)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1994: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1993: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsSintered Metal / Strength / Fabrication Technique / 製作術式
Research Abstract

In recent years, Heratec Crown and Degusint has been realized by the baking of porcelain onto sintered precious metals. These products possess characteristics of both porcelain jacket crowns and porcelain fused to metal crowns, and ceramic crowns (Heratec Crown and Degusint) can be accomplished in a comparatively short period of time. Heretofore, we have performed fundamental research in this field in terms of both the accuracy and the strength of ceramic crowns in which these sintered precious metal are used. As a result, it has become clear the such crowns, compared with porcelain fused to metal crowns, manifest significantly lower strength. Concerning the improvement of crown strength, results of the reserch done in our laboratory show that the strengthening of the inner portion of the crown is more effective than strengthening of the outer portion. It is thus thought that the strength of thesesintered precious metal fused ceramic crowns is a product of insufficient strength of the … More precious metal layr and ofthe porcelain and metal joint.
Thus, a detailed study of these strength was conducted this year. Examination of each type of sintered precious metal suggested that the strength of the strength of the crowns involves the differences in tensile strength and elastic modulus. Moreover, with regards to the joint between metal and porcelain, as a result of observations by SEM and EDX,it became clear that even through Heratec Crown have only a simple mechanicaljoint between the metal layr and the porcelain layr, and the Degusint posesses a fusing mechanism, the distribution of Indium involved in the fusion is different from that in porcelain fused to metal crowns.
While the advantages of sintered precious metals are being brought to light, we plan to carry out research and development of these metals with such qualities as a proper degree of elastic modulus, high strength, elongation to some extent, secure fusion to porcelain, etc., with which we can gain sufficient ceramic crown strength, and proceed in research on their accuracy of fit.16FA01 : Veneered Crown Less

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] 毛取達郎: "陶材の強度に関する基礎的検討-オールセラミック修復用陶材について-" 歯科審美. 6巻. 125-127 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 今野龍彦: "焼結金属を用いた陶材焼付前装冠に関する基礎的検討" 日本補綴歯科学会雑誌. 36 87回特別号. 136- (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 今野龍彦: "焼結金属を用いた陶材焼付前装冠に関する基礎的検討-第2報-" 日本補綴歯科学会雑誌. 37・89回特別号. 199- (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 今野龍彦: "焼結金属を用いた陶材焼付前装冠の製作法" 日本補綴歯科学会雑誌. 37・89回特別号. 113- (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 今野龍彦: "焼結金属を用いた陶材焼付前装冠に関する基礎的検討-第3報-" 日本補綴歯科学会雑誌. 38・91回特別号. 77- (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 山崎尚哉: "耐火模型法によるセラミッククラウンの適合精度について-第1報-" 日本補綴歯科学会雑誌. 38・92回特別号. 151- (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tatsuo Ketori: "A Basic Study ofthe Strength of Porcelain for All Ceramic Restoration." Journal of Esthetic Dentistry. Vol.6, No.1. 125-127 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tatsuhiko Konno: "A Basic Study on the Porcelain Veneered Crown by Sintered Metal Technique" The Journal of The Japan Prosthodontic Society. Vol.36・87th Special Issue. 136 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tatsuhiko Konno: "A Basic Study on the Porcelain Venceered Crown by Sintered Metal Technique. -Part2-" The Journal of The Japan Prosthodontic Society. Vol.37・89th Special Issue. 199 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tatsuhiko Konno: "Fabrication of the Porcelain Veneered Crown by Sintered Metal Technique." The Journal of The Japan Prosthodontic Society. Vol.37・89th Special Issue. 113 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tatsuhiko Konno: "A Basic Study on the Porcelain Veneered Crown by Sintered Metal Technique. -Part3-" The Journal of The Japan Prosthodontic Society. Vol.38・91th Special Issue. 77 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Naoya Yamazaki: "Dimentional Accuracy of Ceramic Crowns Fabricated on the Duplicating Refractory Die. -Part1-" The Journal of The Japan Prosthodontic Society. Vol.38・92th Special Issue. 151 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 毛取達郎: "陶材の強度に関する基礎的検討-オールセラミックス修復用陶材について-" 歯科審美. 6巻. 125-127 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 今野龍彦: "焼結金属を用いた陶材焼付前装冠に関する基礎的検討" 日本補綴歯科学会雑誌. 36・87回特別号. 136- (1992)

    • Related Report
      1994 Annual Research Report
  • [Publications] 今野龍彦: "焼結金属を用いた陶材焼付前装冠に関する基礎的検討-第2報-" 日本補綴歯科学会雑誌. 37・89回特別号. 119- (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 今野龍彦: "焼結金属を用いた陶材焼付前装冠の製作法" 日本補綴歯科学会雑誌. 37・89回特別号. 113- (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 今野龍彦: "焼結金属を用いた陶材焼付前装冠に関する基礎的検討-第3報-" 日本補綴歯科学会雑誌. 38・91回特別号. 77- (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 山崎尚哉: "耐火模型法によるセラミックスクラウンの適合精度について-第1報-" 日本補綴歯科学会雑誌. 38・92回特別号. 151- (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 今野龍彦: "焼結金属を用いた陶材焼付前装冠の製作法" 日本補綴歯科学会雑誌. 37・89回特別号. 112 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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