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Biological characterization of a new silicon based coating developed for dental implants

  • Biocompatibility Studies
  • Original Research
  • Published:
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Abstract

Taking into account the influence of Si in osteoblast cell proliferation, a series of sol–gel derived silicon based coating was prepared by controlling the process parameters and varying the different Si-alkoxide precursors molar rate in order to obtain materials able to release Si compounds. For this purpose, methyltrimethoxysilane (MTMOS) and tetraethyl orthosilicate (TEOS) were hydrolysed together and the sol obtained was used to dip-coat the different substrates. The silicon release ability of the coatings was tested finding that it was dependent on the TEOS precursor content, reaching a Si amount value around ninefolds higher for coatings with TEOS than for the pure MTMOS material. To test the effect of this released Si, the in vitro performance of developed coatings was tested with human adipose mesenchymal stem cells finding a significantly higher proliferation and mineralization on the coating with the higher TEOS content. For in vivo evaluation of the biocompatibility, coated implants were placed in the tibia of the rabbit and a histological analysis was performed. The evaluation of parameters such as the bone marrow state, the presence of giant cells and the fibrous capsule proved the biocompatibility of the developed coatings. Furthermore, coated implants seemed to produce a qualitatively higher osteoblastic activity and a higher number of bone spicules than the control (uncoated commercial SLA titanium dental implant).

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Acknowledgments

The authors wish to thank Dr. Vicente Ferrer from the University of Murcia for the surgery of the rabbits, and to Dr. Antonio López Bravo for his precious help in the histological study. The research Project has been supported by the Ministerio de Economía y Competitividad (Govern of Spain) and FEDER through Subprograma INNPACTO: BACDENT(IPT-2012-0218-090000), and University of the Basque Country (UFI 11/56; IT 611-13). The Basque Government awarded with a Grant to María Martínez.

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Authors and Affiliations

  1. Polymer Science and Technology Department, University of the Basque Country (UPV/EHU), P Manuel de Lardizabal, 3, 20018, San Sebastián, Spain

    M. Martínez-Ibáñez, M. J. Juan-Díaz, M. Gurruchaga & Isabel Goñi

  2. Industrial Systems Engineering and Design Department, Jaime I University (UJI), 12071, Castellón de la Plana, Spain

    I. Lara-Saez & J. Suay Antón

  3. Ilerimplant SL, 25191, Lleida, Spain

    A. Coso & J. Franco

Authors
  1. M. Martínez-Ibáñez
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  2. M. J. Juan-Díaz
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  3. I. Lara-Saez
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  4. A. Coso
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  5. J. Franco
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  6. M. Gurruchaga
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  7. J. Suay Antón
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  8. Isabel Goñi
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Correspondence to Isabel Goñi.

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Martínez-Ibáñez, M., Juan-Díaz, M.J., Lara-Saez, I. et al. Biological characterization of a new silicon based coating developed for dental implants. J Mater Sci: Mater Med 27, 80 (2016). https://doi.org/10.1007/s10856-016-5690-9

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  • DOI: https://doi.org/10.1007/s10856-016-5690-9

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