クラウンの適合精度に関する研究 : 印象法,埋没法の違いによる影響  [in Japanese] A Clinical Investigation on the Fit of Full Cast Crowns Made by Various Impression Materials and Investment Techniques  [in Japanese]

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Author(s)

    • 塩沢 育己 SHIOZAWA Ikumi
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 佐藤 尚弘 SATO Takahiro
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 大導寺 善啓 DAIDOHJI Yoshihiro
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 船山 憲彦 FUNAYAMA Norihiko
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 五郎丸 知明 GOROHMARU Tomoaki
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 越後貫 淳 OGONUKI Atsushi
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 岡田 大蔵 OKADA Daizo
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 栗山 實 KURIYAMA Minoru
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 長谷川 成男 HASEGAWA Shigeo
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University

Abstract

The indirect method of full cast crown construction has been constantly improved by the introduction of new dental materials and impression techniques. However, the ideal materials and a technique for making crowns with a complete marginal fit have not been developed yet.<BR>The purpose of this study was to clarify the influence of the indirect method on marginal fit of crown by altering various factors.<BR>1. Conventional or fast-setting gypsum-bonded investments.<BR>2. Three different types of impression materials: addition silicone with individual tray, double-mixed addition silicone and agar with irreversible hydrocolloid.<BR>3. Water-saturated or dry ring lining material.<BR>A microscope was used to measure the fit of castings. The fit of castings was defined as the casting margin difference from the original position when they were tried on a steel die.<BR>The fit of castings made in the method using fast-setting gypsum-bonded investment was looser and the marginal difference was significantly smaller than that using conventional gypsum-bonded investment irrespective of the impression material and usage of ring lining materials.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 43(1), 80-89, 1999-02-10

    Japan Prosthodontic Society

References:  13

Cited by:  2

Codes

  • NII Article ID (NAID)
    10008172137
  • 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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