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The effect of biological environment on the surface of titanium and plasma-sprayed layer of hydroxylapatite

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Abstract

The solubility of titanium samples with different surface coatings, i.e., hydroxylapatite (HA) powders, a two-layer coating of ZrO5+HA on a titanium substrate in solution and of tooth implants after long-term functioning in the human organism, was studied. A minimum difference in solubility of titanium samples with different surface finishes (polished or grit blasted) was established. For the HA powders and coatings, the lowest solubility was observed with a coarse-grained HA–B powder and a coating made of that powder. Clinical tests of tooth implants after long implantation times were performed. A titanium implant (implantation 12 y), a titanium implant with a two-layer coating of ZrO5+HA–A (implantation time 4 y) and a titanium implant with a two-layer coating of Al5O3+3% TiO2)+ HA–A (implantation time 6 y) were studied. The results show that the titanium surface and HA–A layers were dissolved. Nevertheless, after 6 y implantation, total removal of HA–A coating from that part of implant set into the bone, was not observed.

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Authors and Affiliations

  1. Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Racianska 75, P.O. Box 95, 830 08, Bratislava 38, Slovakia

    V. Palka, J. Ivan, E. Poštrková & V. Kolenčlak

  2. Department of Manufacturing Systems, Slovak Technical University, Namestie slobody 17, 812 31, Bratislava, Slovakia

    A. Krsek

  3. Military Hospital, Cesta mladeže 1, 833 31, Bratislava, Slovakia

    I. Infner

  4. Laboratory for Electron Microscopy, Leiden University, Rijnsburgerweg 10 (Building 54), 233 AA, Leiden, The Netherlands

    H. K. Koerten

Authors
  1. V. Palka
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  2. J. Ivan
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  3. E. Poštrková
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  4. V. Kolenčlak
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  5. A. Krsek
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  6. I. Infner
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  7. H. K. Koerten
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Palka, V., Ivan, J., Poštrková, E. et al. The effect of biological environment on the surface of titanium and plasma-sprayed layer of hydroxylapatite. Journal of Materials Science: Materials in Medicine 9, 369–373 (1998). https://doi.org/10.1023/A:1013275311692

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