Large-area electron beam irradiation for surface polishing of cast titanium

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Author(s)

    • TOKUNAGA Junko
    • Division of Oral Maxillofacial Regeneration, Graduate School of Dentistry, Osaka University
    • KOJIMA Tetsuya
    • Division of Oral Maxillofacial Regeneration, Graduate School of Dentistry, Osaka University
    • KINUTA Soichiro
    • Division of Oral Maxillofacial Regeneration, Graduate School of Dentistry, Osaka University
    • WAKABAYASHI Kazumichi
    • Division of Oral Maxillofacial Regeneration, Graduate School of Dentistry, Osaka University
    • NAKAMURA Takashi
    • Division of Oral Maxillofacial Regeneration, Graduate School of Dentistry, Osaka University
    • YATANI Hirofumi
    • Division of Oral Maxillofacial Regeneration, Graduate School of Dentistry, Osaka University
    • SOHMURA Taiji
    • Division of Oral Maxillofacial Regeneration, Graduate School of Dentistry, Osaka University

Abstract

<p>The purpose of this study was to examine the translucency and low-temperature degradation of silica-doped experimental Y-TZP (Yttria-stabilized tetragonal zirconia polycrystal) containing almost no alumina. The experimental Y-TZP samples were sintered at either 1,450 or 1,500°C. The samples of commercially available translucent Y-TZP and conventional Y-TZP were used as controls. The contrast ratio (CR) and translucency parameter (TP) were obtained to compare the translucencies. In addition, the specimens were also subjected to an accelerated aging test. The results showed that the experimental Y-TZP sintered at 1,500°C and translucent Y-TZP exhibited almost the same level of translucency. During the accelerated aging test, the translucent Y-TZP underwent a substantial increase in monoclinic content, an index of degradation after the aging test. However, neither the experimental Y-TZP nor the conventional Y-TZP exhibited any appreciable change. It was concluded that the silica-doped Y-TZP will develop translucency and resistance to degradation when sintered at 1,500°C.</p>

Journal

  • Dental Materials Journal

    Dental Materials Journal 28(5), 571-577, 2009-09-01

    The Japanese Society for Dental Materials and Devices

References:  20

Codes

  • NII Article ID (NAID)
    10025916604
  • NII NACSIS-CAT ID (NCID)
    AA10443149
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    02874547
  • Data Source
    CJP  J-STAGE 
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