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2005 Fiscal Year Final Research Report Summary

Development of a plasticizer free denture soft lining material

Research Project

Project/Area Number 15390602
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 補綴理工系歯学
Research InstitutionOsaka Dental University

Principal Investigator

NAKAMURA Masaaki  Osaka Dental University, Dentistry, Professor, 歯学部, 教授 (50067055)

Co-Investigator(Kenkyū-buntansha) TAKEDA Shoji  Osaka Dental University, Dentistry, Associate Professor, 歯学部, 助教授 (20067185)
HASHIMOTO Yoshiya  Osaka Dental University, Dentistry, Instructor, 歯学部, 助手 (20228430)
SUZUKI Kazuomi  Okayama University, Dentistry, Professor, 大学院・医歯学総合研究科, 教授 (30050058)
TANAKA Jiro  Okayama University, Dentistry, Instructor, 大学院・医歯学総合研究科, 助手 (40171764)
Project Period (FY) 2003 – 2005
Keywordsplasticizer / in vitro / tissue model / clinical model test / soft lining material / dental resin / copolymer / higher-order structure
Research Abstract

To study the feasibility of alternative chemicals for phthalate and ethyl alcohol in tissue conditioners, candidate vinyl esters as plasticizers were examined for estrogenic activity, cytotoxicity and the viscoelastic properties. The estrogenic activities and cytotoxicity in human fibroblasts and keratinocytes of the vinyl esters were measured in an E-screen assay and MTS assay, respectively. Human fibroblasts in collagen culture and tissue model experiment were exposed to the four prototype materials and commercially available tissue conditioners, and cytotoxicity and the expression of cytokine were determined using MTS, real-time PCR and ELISA assay. The viscoelastic properties of the prototype materials were examined by initial flow test and rubber hardness test. None of the vinyl esters tested exhibited any estrogenic activity. The IC50 values (the chemical concentration required to inhibit viability by 50%) of vinyl octanoate (VO) and divinyl adipate were high compared to the other vinyl esters. The prototype made from VO displayed a low or a similar level of cytotoxicity and expression of cytokine as the conventional materials. The initial flow of VO was similar to that of a commercially available tissue conditioner, shofu tissue conditioner. The rubber hardness of VO did not change as days pass until 30 days. The prototype material made from VO was biocompatible and favorably viscoelastic and therefore might be a possible candidate of phthalate and ethyl alcohol free tissue conditioner.

  • Research Products

    (20 results)

All 2006 2005 2004 2003 Other

All Journal Article (18 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Dimethacrylate Derivatives of Dimer Acid2006

    • Author(s)
      M.T.Lemon
    • Journal Title

      Journal of Polymer Science Part A; Polymer Chemistry (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Monomer-Solvent Phase-Separation in One-Step Self-Etch Adhesives2005

    • Author(s)
      K.Van Landuyt
    • Journal Title

      Journal of Dental Research 84

      Pages: 183-188

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Effect of cavity configuration and aging on the bonding Effectiveness of six adhesives to dentin2005

    • Author(s)
      K.Shiraia
    • Journal Title

      Dental Materials Journal 21

      Pages: 110-124

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Technique-Sensitivity of Contemporary Adhesives2005

    • Author(s)
      B.Van Meerbeek
    • Journal Title

      Dental Materials Journal 24

      Pages: 1-13

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 内分泌攪乱物質を含まない高強度・高弾性・高靭性歯科用レジンの開発-ウレタンジメタクリレート/メタクリル酸レジンの可能性-2005

    • Author(s)
      田仲持郎
    • Journal Title

      日本歯科医学会雑誌 24

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Effect of cavity configuration and aging on the bonding effectiveness of six adhesives to dentin2005

    • Author(s)
      K.Shiraia
    • Journal Title

      Dental Materials 21:3

      Pages: 110-124

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Monomer-Solvent Phase-Separation in One-Step Self-Etch Adhesives2005

    • Author(s)
      K.Van
    • Journal Title

      Journal of Dental Research 84

      Pages: 183-188

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Technique-Sensitivity of Contemporary Adhesives2005

    • Author(s)
      B.Van Meerbeek
    • Journal Title

      Dental Materials Journal 24:3

      Pages: 1-13

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Cytocompatibility and viscoelastic properties of phthalate ester-free tissue conditioners2005

    • Author(s)
      Y.Hashimoto
    • Journal Title

      Journal of the Japanese Association for Dental Science 24

      Pages: 51-60

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 内分泌攪乱物質を含まない高強度・高弾性・高靭性歯科用レジンの開発2004

    • Author(s)
      田仲持郎
    • Journal Title

      日本歯科医学会雑誌 23

      Pages: 70-75

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Cytocompatibility and viscoelastic properties of phthalate ester-free tissue conditioners2004

    • Author(s)
      Y.HASHIMOTO
    • Journal Title

      Dent Mater J 23・3

      Pages: 412-418

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Evidence that heat shock gene expression may be useful for assessing the cytocompatibility of dental biomaterials2004

    • Author(s)
      Y.HASHIMOTO
    • Journal Title

      Dent Mater J 23・1

      Pages: 184-189

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Development of High Strength, High Modulus, High Toughness Dental Matrix Resin without Environmental Endocrine Disruptor -Ability of Urethane Dimethacrylate/Methacrylic Acid Resin-2004

    • Author(s)
      J.Tanaka
    • Journal Title

      Dental Materials Journal 23:3

      Pages: 412-418

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Evidence that heat shock gene expression may be useful for assessing the cytocompatibility of dental biomaterials2004

    • Author(s)
      Y.HASHIMOTO
    • Journal Title

      Dental Materials Journal 23:3

      Pages: 184-189

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Development of High Strength-High Modulus-High Toughness Dental Matrix Resin without Environmental Endocrine Disruptor2004

    • Author(s)
      J.Tanaka
    • Journal Title

      Journal of the Japanese Association for Dental Science 23

      Pages: 70-75

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] フタル酸エステルフリーの粘膜調整材の開発2003

    • Author(s)
      中村正明
    • Journal Title

      日本歯科医師会雑誌 56・4

      Pages: 43-53

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Development of phthalate ester-free tissue Conditioners2003

    • Author(s)
      M.Nakamura
    • Journal Title

      Journal of the Japanese Dental Association 56:4

      Pages: 43-53

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Dimethacrylate Derivatives of Dimer Acid

    • Author(s)
      M.T.Lemon
    • Journal Title

      Journal of Polymer Science Part A ; Polymer Chemistry (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Patent(Industrial Property Rights)] 医療用樹脂組成物, 樹脂組成物の製造方法及び成形品の製造方法2006

    • Inventor(s)
      田仲持郎, 鈴木一臣
    • Industrial Property Rights Holder
      岡山大学
    • Industrial Property Number
      PCT 国際特許, PCT/JP2006/300772
    • Filing Date
      2006-01-19
    • Description
      「研究成果報告書概要(和文)」より
  • [Patent(Industrial Property Rights)] 医療用樹脂組成物, 樹脂組成物の製造方法及び成形品の製造方法2005

    • Inventor(s)
      田仲持郎, 鈴木一臣
    • Industrial Property Rights Holder
      岡山大学
    • Industrial Property Number
      日本国内特許,特願~2005-13231
    • Filing Date
      2005-01-20
    • Description
      「研究成果報告書概要(和文)」より

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Published: 2007-12-13  

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