バルビツール酸誘導体を用いた常温重合レジンの最適使用条件の検討  [in Japanese] The Most Adequate Conditions in Clinical Usage of Autopolymerizing Resin with Barbituric Acid Derivatives  [in Japanese]

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Author(s)

    • 星合 和基 HOSHIAI Kazumoto
    • 愛知学院大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, School of Dentistry, Aichi-Gakuin University
    • 田中 貴信 TANAKA Yoshinobu
    • 愛知学院大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, School of Dentistry, Aichi-Gakuin University
    • 只腰 哲章 TADAKOSHI Tetsuaki
    • 愛知学院大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, School of Dentistry, Aichi-Gakuin University
    • 橋本 直明 HASHIMOTO Naoaki
    • 愛知学院大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, School of Dentistry, Aichi-Gakuin University
    • 文田 清美 FUMITA Kiyomi
    • 愛知学院大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, School of Dentistry, Aichi-Gakuin University
    • 野崎 乃里江 NOZAKI Norie
    • 愛知学院大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, School of Dentistry, Aichi-Gakuin University
    • 岡崎 祥子 OKAZAKI Sachiko
    • 愛知学院大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, School of Dentistry, Aichi-Gakuin University
    • 長谷川 明 HASEGAWA Akira
    • 愛知学院大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, School of Dentistry, Aichi-Gakuin University

Abstract

目的: バルビツール酸誘導体を触媒に用いた常温重合レジンによる比較的短時間で作業を行う場合の初期硬化時間, 重合時の加熱, 温水中での硬化操作などの初期硬化時の最適使用条件を追及し, その的確な使用方法の確立を目指して, 基礎的な検討を行った.<BR>方法: 常温重合レジンで作製された被着体に, 同一の常温重合レジンを筆積みし, 所定の時間放置した後, 温水中に所定時間浸漬して重合後, その剪断接着強さを測定した. その際の放置時間, 温水温度, 浸漬時間の接着強さに及ぼす影響を調べた. 同時に, 試料の破断面を走査型電子顕微鏡を用いて観察した. また, 各試料の破断状態を目視により分類した. 破壊の状態の判定は, 界面破壊, 凝集破壊, 混合破壊とした.<BR>結果: 放置時間が30秒では, 浸漬時間30, 45, 60秒の場合のいずれも温水温度の上昇とともに剪断接着強さが増加した. また, 走査型電子顕微鏡で凝集破壊像が観察された試料は, 剪断接着強さは約10MPa以上であることが確認された. 特に, 浸漬時間60秒の場合, 50°C, 60°Cの温水温度ですべての試料が凝集破壊像を示した.<BR>結論: バルビツール酸誘導体を用いた常温重合レジンは50°C以上の温水中で十分硬化することが確認された.

Purpose: The purpose of this study was to establish the proper usage of an autopolymerizing resin which is the optimum application requirement in early hardening pursued at the initial stage of the autopolymerizing resin using barbituric acid derivatives.<BR>Methods: The shear bond strength of specimens was measured by the change of various polymerization conditions of exposure time, the dipping time and warm water temperature after the autopolymerizing resin identical to that of the autopolymerizing resin block was put on the brush. The plane of the broken surface was observed in the scanning electron microscopic image, and in addition, the rupture condition was classified by visual observation. The classification of the failure patterns was interface failure, cohesion failure and mixing failure.<BR>Results and Conclusion: The shear bond strength increased according to the rise in water temperature in dipping time of 30 seconds, 45 seconds and 60 seconds. It was confirmed that the optimum technical service condition was 60-second dipping time in warm water (temperature of 50°C) and that shear bond strength is about 10 MPa. It proved advantageous to stiffen the autopolymerizing resin using a barbituric acid derivative. It was also confirmed that sufficient stiffening occurred in warm water to decrease the residual monomer.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 46(2), 233-240, 2002-04-10

    Japan Prosthodontic Society

References:  14

Codes

  • NII Article ID (NAID)
    10008157031
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03895386
  • Data Source
    CJP  J-STAGE 
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