陽極酸化と水熱処理で形成されるチタン表面のアパタイト皮膜に対する酸化電圧の影響  [in Japanese] Effects of Oxidizing Voltage on Properties of Hydroxyapatite Film Formed on Titanium by Anodic Oxidation and Hydrothermal Treatment  [in Japanese]

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Abstract

Excellent biocompatibility has been reported for the titanium implants with modified surface by deposition of hydroxyapatite crystal though the combined treatments of anodic oxidation and hydrothermal heating (SA treatment). The purpose of this study was to determine an optimal voltage load in the anodic oxidation process for preparing an oxidized surface appropriate to the desired modification. Tensile adhesion tests of anodically oxidized titanium rod at voltages of 200-400 V were performed when it was bonded to a non oxidized titanium rod with the epoxy resin adhesive. Further the push-out tests of the implant-bone specimens excised from the femur of rabbits after embedding the titanium implant for 4 weeks were conducted with the tensile testing machine. The fractured surfaces were observed by scanning electron microscope (SEM). As a result, below 350 V oxidation brought about the tensile bond strength of 37 MPa without any delamination of the SA film, whereas 400 V oxidation decreased the strength to 32 MPa. The push-out test and SEM observation revealed that increase in the quantity of hydroxyapatite crystal deposition on the surface with the voltage brought about higher push-out strength and more new bone formation. These results suggested that 350 V oxidation would be very suitable for obtaining the desired implant surface.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 44(1), 25-33, 2000-02-10

    Japan Prosthodontic Society

References:  22

Cited by:  4

Codes

  • NII Article ID (NAID)
    10008154479
  • 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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