• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Artificial Enamel : Preparation and Evaluation.

Research Project

Project/Area Number 11470403
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field Conservative dentistry
Research InstitutionTokyo Medical and Dental University

Principal Investigator

NAKABAYASHI Nobuo  Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University Professor, 生体材料工学研究所, 教授 (30014020)

Co-Investigator(Kenkyū-buntansha) WATANABE Akihiko  Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University Assistant Professor, 生体材料工学研究所, 助手 (30126263)
IWASAKI Yasuhiko  Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University Associate Professor, 生体材料工学研究所, 助教授 (90280990)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 2000: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1999: ¥3,100,000 (Direct Cost: ¥3,100,000)
KeywordsArtificial Enamel / Hybridized Dentin / Encapusulated Hydroxyapatite / Enveloped collagen / 4-META / MMA-TBB resin / モノマー透過性 / ミニダンベル型引張試験 / アセトンプライマー / スミヤー層 / リン酸エッチング / 歯質接着性レジン / 人工エナメル / マイクロリーケージ / 耐酸性
Research Abstract

Preparation of hybridized dentin is a key to make bonding of resin to dentin possible. The purpose of this study was to compare efficacy of dissolved various valent cations in 10% phosphoric acid on wet bonding to dentin. It was hypothesized that addition of multivalent cation in etchant could improve the monomer permeability of wet demineralized dentin that would make the bond strength higher. Bovine dentin prepared with 600-grid paper was etched with 10% phosphoric acid dissolved 22.0mM sodium chloride (Na), calcium chloride (Ca) or ferric chloride (Fe) for 10s. The specimens were rinsed and blot-dried. They were primed with 5% 4-META in acetone for 60 s three times. And then a MMA-TBB resin was applied. Mini-dumbbell test specimens were trimmed from the bonded samples.
Through a study of bonding to dentin it was realized that demineralized dentin not protected by interpenetration resin can easily be affected by hydrolysis, which we call secondary caries. Once enamel is removed, dentin is exposed to the outside and is vulnerable to caries, and pulp is also exposed to the outside through tubles in the exposed dentin. Then microorganisms invade the pulp easily ; this we call hypersensitive dentin. Microleakage and secondary caries have been very important problems to be solved in dentistry. When we can provide an impermeable membrane like enamel on the exposed dentin, it must be very effective to protect dentin from cariesand pulp from invasion of microorganisms.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] 渡辺昭彦: "原子間力顕微鏡(AFM)による生体材料の観察"生体材料工学研究所報告. 33. 30-37 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 中林宣男: "象牙質へのレジンの接着とその長期安定性"生体材料工学研究所報告. 33. 23-29 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 中島由佳: "硬質レジン歯を支台歯に接着するブリッジの研究"日本補綴学会誌. 43. 286-292 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 戸井田哲也: "リン酸で前処理された湿潤歯質への4-META/MMA-TBBレジンの接着"歯科材料・器械. 19. 432-440 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 中林宣男: "人工エナメル質の創製と機能評価"生体材料工学研究所報告. 34. 9-13 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] N.Nakabayashi: "Effect of etchant variation on wet and dry dentin bonding Primed with 4-META/aceton."Dental Materials. 16. 274-279 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.J.Shinchi: "The effect of phosphoric acid concentration on resin tag length And bond strength of a photo-cured resin to acid-etched enamel."Dental Materials. 16. 324-329 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Nakaoki: "Dimensional change of demineralized dentin treated with HEMA primers."Dental Materials. 16. 441-446 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 中林宣男: "象牙質に樹脂含浸象牙質を形成させるデンティンボンディング材"補綴臨床別冊 最新歯科材料活用マニュアル. 64-67 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 中林宣男: "歯髄とエナメル質を守る時代"the Quintessence. 20. 68-70 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akihiko Watanabe: "Atomic Force Microscopic Observation of Biomaterials"Institute of Biomaterials and Bioengineering. 33. 30-37 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Nobuo Nakabayashi: "Long-Durable Bonding of Resin to Dentin"Institute of Biomaterials and Bioengineering. 33. 23-29 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yuka Nakajima: "Study on Adhesion Fixed Partial Denture Applied Composite Resin Teeth as Pontic."J Jpn Prosthodont Soc. 43. 286-292 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Toida: "Wet Bonding of 4-META/MMA-TBB Resin to Dentin and Enamel Etched with Phosphoric Acid"J.J.Dent Mater. 19(5). 432-440 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] N..Nakabayashi: "Artificial Enamel : Preparation and Evaluation"Institute of Biomaterials and Bioengineering. 34. 9-13 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Nobuo Nakabayashi: "Effect of etchant variation on wet and dry bonding primed with 4-META/aceton."Dental Materials. 16. 324-329 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shinchi MJ: "The effect of phosphoric acid concentration on resin tag length and bond strength of a poto-cured resin to acid-etched enamel."Dental Materials. 16. 324-329 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Nakaoki: "Dimensional changes of demineralized dentin treated with HEMA primers"Dental Materials. 16. 441-446 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 戸井田哲也: "リン酸で前処理された湿潤歯質への4-META/MMA-TBBレジンの接着"歯科材料・器械. 51. 128-134 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 中林宣男: "象牙質に樹脂含侵象牙質を形成させるデンティンボンディング材"補綴臨床別冊医歯薬出版株式会社. 76-79 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Sakai T,Morita S,Shinomiya K,Watanabe A,Nakabayashi N: "Prevention of fibrous layer formetion between bone and adhesive bone cement : In vivo evaluation of bone impregnation with 4-META/MMA-TBB cement "J.Biomed.Mater.Res. 52. 24-29 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 中林宣男,岩崎泰彦,渡辺昭彦: "人工エナメル質の創製と機能評価"生体材料工学研究所報告. 34. 9-13 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Nakabayashi N,Hiranuma K.: "Effect of etchant variation on wet and dry bonding primed with 4-META/aceton."Dental Materials. 16. 274-279 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Shinchi M.J,Soma K,Nakabyashi N.: "The effect of phosphoric acid concentration on resin tag length and bond strength of a photo-cured resin to acid-etched enamel."Dental Materials. 16. 324-329 (2000)

    • Related Report
      2000 Annual Research Report

URL: 

Published: 1999-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi