象牙質内タンパク質の変性が接着に及ぼす影響 : 樹脂含浸層モデルの強度について  [in Japanese] Effects of Denaturation of Dentinal Proteins on Adhesion : Strength of Resin-Impregnated Layer Model  [in Japanese]

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Author(s)

    • 伊藤 博子 ITO Hiroko
    • 九州大学歯学部歯科補綴学第一講座 Department of Prosthetic Dentistry I, Faculty of Dentistry, Kyushu University
    • 根津 尚史 NEZU Takashi
    • 九州大学歯学部歯科補綴学第一講座 Department of Prosthetic Dentistry I, Faculty of Dentistry, Kyushu University
    • 福田 匡輔 FUKUDA Kyousuke
    • 九州大学歯学部歯科補綴学第一講座 Department of Prosthetic Dentistry I, Faculty of Dentistry, Kyushu University

Abstract

The purpose of this study was to examine the effect of heat denaturation of dentinal protein onadhesive strength. In this study, a model system for resin-impregnated layers (RILs) was proposed, andcompression test was tried in order to clarify the relationship between RIL and adhesion strengths. Bovineincisors were heated in 93+1°C water for 1 hr to denature the dentinal protein uniformly (heat-treated).Superbond (SB) and Panavia 21 (PA) were used as the resin adhesives. Heat-treated and untreated dentinswere powdered respectively, decalcified by hydrochloric acid, washed with distilled water, and dried. Dentinpowder thus prepared and resin adhesive were mixed, then specimens of 3 mm in diameter and 4 mm in heightwere fabricated in Teflon molds. They were allowed to set at room temperature for 24 hrs. Compressiontests were performed on ten specimens for each group. The compressive strength and elastic modulus weresubjected to the Student's t-test to determine the statistical significance of any difference. Compressivestrength of the heat-treated group was significantly weaker than that of the untreated group (SB: p<0.01, PA: p<0.001). The elastic modulus of the heat-treated group was significantly smaller than that of theuntreated group (SB: p<0.001, PA: p<0.01).

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 41(6), 910-914, 1997-12-10

    Japan Prosthodontic Society

References:  19

Cited by:  1

Codes

  • NII Article ID (NAID)
    10008167940
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03895386
  • Data Source
    CJP  CJPref  J-STAGE 
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