上顎中切歯における歯冠修復歯の伝熱的様相に関する研究 : 陶材焼付鋳造冠とオールセラミッククラウンについて A Study on the States of Heat Transmission on Crown Restored Maxillary Central Incisor : The Comparison of Porcelain Fused to Metal Crown and All Ceramics Crown

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著者

    • 大村 祐史 OMURA Yuji
    • 日本大学松戸歯学部第2歯科補綴学教室 Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo
    • 渡辺 官 WATANABE Tsukasa
    • 日本大学松戸歯学部第2歯科補綴学教室 Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo
    • 才川 隆弘 SAIKAWA Takahiro
    • 日本大学松戸歯学部第2歯科補綴学教室 Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo
    • 大野 清美 ONO Kiyomi
    • 日本大学松戸歯学部第2歯科補綴学教室 Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo
    • 會田 雅啓 AIDA Masahiro
    • 日本大学松戸歯学部第2歯科補綴学教室 Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo

抄録

Unsteady temperature distribution was analyzed by using a two-dimensional finiteelement method. An excessive thermal stimuli was added to a maxillary central incisor which was restored with porcelain fused to metal crown and all ceramics crown. The results were as follows:<BR>1. In the pulp, the pulp horn showed earliest temperature response.<BR>2. Temperature distributions with time in the porcelain fused to metal crown were different from those in the all ceramics crown. Incase of all ceramics crown in thermal loading condition B (the lingual surface and part of the labial surface), the temperature rises on the labial side were late, and the influence orthermal distribution according to the kind of restorative materials was greater than porcelain fused to metal crown.<BR>3. The temperature distribution with time under different thermal loading conditions was different for the porcelain fused to metal crown and all ceramics crown. In case of porcelain fused to metal crown in thermal loading condition B (the lingual surface and part of the labial surface), the temperature rises on the labial side were early, and it was similar with thermal distribution of loading condition A (all surface), the influence on thermal distribution according to the loading conditions was smaller than all ceramics crown.<BR>4. Thermal loading condition A (all surface) gave higher temperature, 1.8°C, in porcelain fused to metal crown and, 2.6°C, in all ceramics crown at point P (the pulp horn) than thermal loading condition B (the lingual surface and part of the labial surface).<BR>5. The highest temperature at point P (the pulp horn) in all ceramics crown was higher than in porcelain fused to metal crown and the highest temperature at point S (the lingual side near the center in coronal pulp) in porcelain fused to metal crown was higher than in all ceramics crown.

収録刊行物

  • 日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society

    日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society 42(6), 1073-1080, 1998-12-10

    Japan Prosthodontic Society

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各種コード

  • NII論文ID(NAID)
    10008171820
  • NII書誌ID(NCID)
    AN00197911
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03895386
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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