磁性アタッチメント用キーパーと金銀パラジウム合金との鋳接 : 第3報 埋没材の影響  [in Japanese] Casting Au-Ag-Pd Alloy to the Embedded Keeper of Dental Magnetic Attachment : Part 3.Influence of Investment Material  [in Japanese]

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Author(s)

    • 浅野 彰夫 ASANO Akio
    • 朝日大学大学院歯学研究科局部床義歯学専攻 Graduate School of Dentistry(Prosthodontics), Asahi University
    • 山内 六男 YAMAUCHI Mutsuo
    • 朝日大学歯科臨床研究所付属歯科診療所 Dental Clinic, Post-doctoral Institute of Clinical Dentistry,Asahi University
    • 堺 誠 SAKAI Makoto
    • 朝日大学歯学部歯科補綴学講座 Department of Prosthodontics, Asahi University School of Dentistry
    • 長澤 亨 NAGASAWA Tooru
    • 朝日大学歯学部歯科補綴学講座 Department of Prosthodontics, Asahi University School of Dentistry

Abstract

A cast-soldering method is used for the keepers of magnetic attachments. However, there have been few studies concerning the effects of the cast-soldering method on keepers. In this study, the cast-soldering method was investigated by changing the cast investment material.<BR>Two commercially available keepers and a 12% Au-Ag-Pd alloy were used. Two conventional, and one quick-heating-types of gypsum-bonded investment were used. Cast-soldering was performed at a mold temperature of 700°C for 30 minutes using a vacuum-pressure-type casting machine. After cast-soldering, the interface between the keeper and the casting alloy was observed by metallic microscopy and scanning electron microscopy. The interface was also analyzed with an X-ray electron microprobe.<BR>A black layer (consisting of a reaction layer and a gap) was observed between keeper and Au-Ag-Pd alloy. The black layer was smallest with the conventional gypsum-bonded investment (cristobalite type), compared with the other. When using the quick-heating-type of gypsum-bonded, and gypsum-bonded (cristobalite and quartz type), investment, the black layer was equal to or larger than that when using the conventional type of gypsum-bonded investment (cristobalite type).<BR>The finding suggests that the conventional gypsum-bonded investment (cristobalite type) is preferred for the cast-soldering method of keepers.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 44(5), 683-689, 2000-10-10

    Japan Prosthodontic Society

References:  23

Cited by:  5

Codes

  • NII Article ID (NAID)
    10008156348
  • 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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