チタン焼付用陶材の諸性質  [in Japanese] Material Property of Porcelain Fused to Titanium  [in Japanese]

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Author(s)

    • 鈴木 康仁 SUZUKI Yasuhito
    • 日本歯科大学歯学部歯科補綴学教室第2講座 Department of Crown and Bridge, The Nippon Dental University School of Dentistry at Tokyo
    • 岡田 智雄 OKADA Tomoo
    • 日本歯科大学歯学部歯科補綴学教室第2講座 Department of Crown and Bridge, The Nippon Dental University School of Dentistry at Tokyo
    • 新谷 明喜 SHINYA Akiyoshi
    • 日本歯科大学歯学部歯科補綴学教室第2講座 Department of Crown and Bridge, The Nippon Dental University School of Dentistry at Tokyo
    • 横塚 繁雄 YOKOZUKA Shigeo
    • 日本歯科大学歯学部歯科補綴学教室第2講座 Department of Crown and Bridge, The Nippon Dental University School of Dentistry at Tokyo

Abstract

This study, for clinical application of dentistry, was conducted to investigate five physical properties of four porcelain candidates: Vickers hardness, fracture toughness, color stability, crack level, and firing shrinkage of the porcelain fused to titanium. The four candidates-Noritake-TITAN, Vident-Vita Titanium, Degussa-Duceratin, and Ohara-Titanbond-were investigated under the condition of loading 5 kgf to them for 15 seconds. The results were as follows:<BR>1. Vickers hardness: 707 through 847 HV<BR>2. Fracture toughness: 1.26 through 1.84 MNm<SUP>3/2</SUP> (The maximum with Ohara-Titanbond)<BR>3. Color stability: a. Opaque's: L*=83.27 to 87.69, a*=1.40 to 2.45, b*=9.97 to 15.55; b. Dentin's: L*=67.60 to 73.77, a*=0.41 to 0.88, b*=6.00 to 9.26<BR>4. Crack type: Median crack<BR>5. Firing shrinkage: a. Opaque's: 10%; b. Dentin's: 15%<BR>As shown in the data, the results were significant and almost equal to that of the conventional methods, which means that the usage of the porcelain fused to titanium is just as good. Two remarkable points were found: opaque to dentin in the color stability of Y range is higher; opaque to dentin in the firing shrinkage is lower. It was concluded that improving the two points could make it the best dental application.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 43(1), 138-148, 1999-02-10

    Japan Prosthodontic Society

References:  19

Cited by:  5

Codes

  • NII Article ID (NAID)
    10008172314
  • 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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