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Related Experiment Videos

Microgrooved subcutaneous implants in the goat

X F Walboomers1, H J Croes, L A Ginsel

  • 1Department of Biomaterials, Dental School, Faculty of Medical Sciences, University of Nijmegen, The Netherlands. F.Walboomers@dent.kun.NL

Journal of Biomedical Materials Research
|November 25, 1998
PubMed
Summary

Microgrooved implants showed no difference in soft tissue response compared to smooth implants. Surface microgrooves did not alter fibrous capsule formation or inflammatory cell presence around polystyrene implants.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Implantology

Background:

  • Understanding soft tissue response to implantable devices is crucial for successful clinical outcomes.
  • Surface topography, including microgrooves, may influence tissue integration and foreign body response.
  • Polystyrene is a common material used in implantable devices.

Purpose of the Study:

  • To investigate the effect of microgrooved surfaces on the tissue response around polystyrene implants in soft tissue.
  • To compare the fibrous capsule formation, inflammatory cell infiltration, and vascularization between smooth and microgrooved implants over time.

Main Methods:

  • Polystyrene implantable disks, either smooth or microgrooved (1-10 microm), were implanted subcutaneously in goats for 1, 4, or 12 weeks.

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  • Light and transmission electron microscopy were used to examine tissue morphology.
  • Histomorphometric measurements quantified capsule thickness, inflammatory layer thickness, and blood vessel density.

    • Main Results:

    • A uniform fibrous capsule formed around all implants, with thickness around 80 microm after 1 week, densifying over time.
    • Inflammatory cell infiltration was observed, with a thick layer at 1 week and 4 weeks, reducing to a single layer by 12 weeks.
    • No significant differences in capsule thickness, inflammatory layer thickness, or blood vessel presence were found between smooth and microgrooved implants.

    Conclusions:

    • Microgrooves of 1 microm depth and 1-10 microm width on polystyrene implants do not appear to influence the soft tissue response.
    • The observed tissue reactions, including fibrous capsule formation and inflammation, were similar for both smooth and microgrooved surfaces.