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Related Experiment Videos

Comparative surface microanalysis of failed Brånemark implants.

C Aparicio1, J Olivé

  • 1Clinica Protesis Osteointegradas, Barcelona, Spain.

The International Journal of Oral & Maxillofacial Implants
|January 1, 1992
PubMed
Summary

Surface analysis of Brånemark oral implants revealed no significant topographic differences. However, contamination with carbon and silicon on retrieved implants raises concerns about re-use and long-term prognosis.

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Area of Science:

  • Biomaterials Science
  • Implantology
  • Surface Chemistry

Background:

  • The human immunologic system response is influenced by implant surface characteristics.
  • Understanding surface changes in retrieved oral implants is crucial for assessing osseointegration failure and re-use potential.

Purpose of the Study:

  • To compare the topography and chemical composition of retrieved Brånemark oral implants with control specimens.
  • To investigate potential surface contaminants that may affect implant performance.

Main Methods:

  • Analysis of 13 Brånemark oral implants (11 retrieved, 2 controls) using scanning electron microscopy (SEM), X-ray spectrographic microanalysis, and Auger spectroscopy.
  • Evaluation of surface topography, chemical composition, and oxide layer thickness after cleaning and sterilization.

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Main Results:

  • SEM revealed no significant topographic differences between retrieved and control implants.
  • X-ray spectrographic microanalysis showed similar bulk composition (titanium-based).
  • Auger spectroscopy detected significant differences in surface carbon and silicon levels on retrieved implants, suggesting contamination.

Conclusions:

  • Handling or inadequate cleaning processes may introduce contaminants like carbon and silicon onto retrieved implant surfaces.
  • The presence of these contaminants exceeds acceptable limits, casting doubt on the long-term prognosis for re-using these implants.