リン酸塩系埋没材を用いた純チタン鋳造床 : コーティング法による反応層の改善 Pure Titanium Denture Base Cast Using Phosphate-Bonded Investment : Improvement of Reactive Layer by Coating Method

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It was attempted to coat the refractory models by zirconia to improve a reactive layer of the pure titanium denture base cast using phosphate-bonded investment and to compare with a usual investing method.<BR>When the coating refractory models were used, the small residual investment on the casting plate removing from the mold was observed.<BR>The surface hardness of the castings prepared with TAIVEST was hardly different between the two samples. However, the surface hardness of the castings prepared with T-INVEST C & B was slightly greater control samples on the casting surface to a depth of about 30μm, but there was little difference between the samples for the depth.<BR>In the coating samples, the microstructure of the surface of the castings showed almost no evident chill layer. The control samples had a chill layer and a columnar crystal layer extending from the surface toward the interior.<BR>Use of the electron probe microanalyzer (EPMA) to determine distribution of various elements in the superficial layer of casting plates showed the reactive layer contained Si and P in control samples. In coating samples, it showed a small reactive layer contained impure elements though there was a high density of Zr of the surface layer of the castings.<BR>The results are suggested that it is possible to improve a reactive layer of the surface of pure titanium denture base cast using phosphate-bonded investment by coating of the surface of the refractory models.

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 43(5), 857-866, 1999-10-10

    Japan Prosthodontic Society

参考文献:  22件中 1-22件 を表示

被引用文献:  11件中 1-11件 を表示

各種コード

  • NII論文ID(NAID)
    10008174544
  • 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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