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A Study of Color Change and Degeneration of Soft Lining Materials

Research Project

Project/Area Number 05671642
Research Category

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

Allocation TypeSingle-year Grants
Research Field 補綴理工系歯学
Research InstitutionMatsumoto Dental College

Principal Investigator

TAKAMATA Tetsuya  Matsumoto Dental College, Department of Dental Diagnostic Sciences, Professor, 歯学部, 教授 (50064689)

Co-Investigator(Kenkyū-buntansha) KUROIWA Akihiro  Matsumoto Dental College, Department of Removable Prosthodontics, Instructor, 歯学部, 講師 (10195571)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1995: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1994: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
KeywordsSoft Lining Materials / Color Change / Degeneration
Research Abstract

A pilot investigation of the physical and mechanical properties of some commercial soft lining materials was discussed. There was considerable variation in the physical and mechanical properties of the soft lining materials examined in this study. It seemed that the properties of tensile stress, percent elongation, tensile strength, tear strength, 25% low tensile stress and Durometer A hardness were useful in characterizing the performance characteristics in relation to the color change of the soft lining materials.
A relationship between the physical and mechanical properties and color change of soft lining materials was also analyzed. The soft liner selected in this study was condensation RTV silicone rubber material. The cause and effect relationship of the degree of color change and physical properties of condensation RTV silicone rubber material was not apparent. It was considered that the physical and mechanical properties for soft liner were influenced by acidity of solutions. It seemed that the relationship between color change and degeneration of soft liners should be analyzed under a bacterial environment in the future. The other hand, the influence for molecular structures of color changed acrylic and polyorefin materials was analyzed by Gel Permeation Chromatography (GPC). A molecular weight and/or molecular number of the acrylic materials were not apparent in aqueous solutions for three months. However, the Polyorefin materials changed in oleaginous solution. This result suggested that the impregnated oil to the material was oxidized and the molecular structures were changed.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 鷹股哲也: "重縮合型シリコーン系軟質裏装材の変色と物理的性質の変化について" 日本補綴歯科学会雑誌. 39. 388-395 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 鷹股哲也: "歯ぐきにやさしい総入れ歯のはなし" 砂書房, 194 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tetsuya Takamata: "A New Visible-Light Curing Soft Lining Material, "Lite Line"" Matsumoto Shigaku. 19-1. 45-53 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kimiaki Ochiai: "A Physical and Mechanical Properties of Soft Lining Materials -Initial Value-" J.Jpn.Prosthodont., Soc.38-2. 383-390 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tetsuya Takamata: "Color Change and Physical Properties of Condensation RTV Silicone Rubber for Soft Lining Material" J.Jpn.Prosthodont., Soc.39-2. 388-395 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 鷹股哲也: "重縮合型シリコーン系軟質裏装材の変色と物理的性質の変化について" 日本補綴歯科学会雑誌. 39. 388-395 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 鷹股哲也: "歯ぐきにやさしい総入れ歯のはなし" 砂書房, 194 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 落合公昭,鷹股哲也: "市販軟質裏装材の物理・機械的性質に関する基礎的研究-初期物性について-" 日本補綴歯科学会雑誌. 38. 383-390 (1994)

    • Related Report
      1994 Annual Research Report

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

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