Effect of sandblasting conditions on alumina retention in representative dental alloys

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著者

    • AL JABBARI Youssef S.
    • Dental Biomaterials Research and Development Chair, College of Dentistry, King Saud University
    • ZINELIS Spiros
    • Department of Biomaterials, School of Dentistry, University of Athens
    • ELIADES George
    • Department of Biomaterials, School of Dentistry, University of Athens

抄録

This study determined the effect of grit size and application pressure on alumina fragment retention after sandblasting in representative dental alloys. Plastic rectangular patterns (25×3×0.6 mm, <I>n</I>=240) were divided equally into four groups and cast with Au-Pt, Ni-Cr, Co-Cr alloys and grade-II cp-Ti. The specimens from each alloy were then divided into 12 subgroups. Each subgroup was then sandblasted with one of the 12 possible combinations of grit size (50, 100 and 250 microns) and propulsion pressure (0.15, 0.30, 0.45 and 0.60 MPa), and their surfaces imaged and analyzed using SEM/EDS analysis. The Al composition was statistically analyzed by two-way ANOVA with Tukey’s post-test. Materials tested showed a substantial amount of retained alumina fragments, the extent of which was dependent on the grit size and propulsion pressure applied for tested alloys except cp-Ti. Importantly, sandblasting conditions different from those proposed by the manufacturers achieved lower levels of retained alumina fragments.

収録刊行物

  • Dental materials journal

    Dental materials journal 31(2), 249-255, 2012-03-01

    日本歯科理工学会

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各種コード

  • NII論文ID(NAID)
    10030129035
  • NII書誌ID(NCID)
    AA10443149
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    02874547
  • データ提供元
    CJP書誌  J-STAGE 
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