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Related Experiment Videos

Microbial findings at failing implants.

A Leonhardt1, S Renvert, G Dahlén

  • 1Department of Oral Microbiology, Faculty of Odontology, Göteborg University, Sweden.

Clinical Oral Implants Research
|November 7, 1999
PubMed
Summary
This summary is machine-generated.

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Peri-implantitis, an infection around titanium implants, shows distinct bacterial profiles compared to healthy implants. Microbiological diagnosis can guide antimicrobial treatment for peri-implant infections.

Area of Science:

  • Oral Microbiology
  • Periodontology
  • Biomaterials Science

Background:

  • Peri-implantitis is a common complication following dental implant placement.
  • Understanding the subgingival microbiota is crucial for diagnosing and treating peri-implant diseases.
  • Titanium implants, particularly those with bone loss and inflammation, may harbor distinct bacterial communities.

Purpose of the Study:

  • To compare the qualitative differences in subgingival microbiota between titanium implants with peri-implantitis and healthy implants.
  • To identify specific bacterial species associated with peri-implantitis.
  • To assess the potential of microbiological diagnosis in guiding antimicrobial therapy for peri-implant infections.

Main Methods:

  • Subgingival bacterial samples were collected from patients with peri-implantitis and healthy implants using paper points.

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  • Microbiological analysis was performed using culture-based methods.
  • Clinical and radiographic signs of bone loss, bleeding on probing, and suppuration were assessed.

    • Main Results:

    • Implants with peri-implantitis showed distinct bacterial profiles compared to healthy implants.
    • Putative periodontal pathogens (e.g., Porphyromonas gingivalis, Prevotella intermedia) were prevalent in peri-implantitis lesions.
    • Non-periodontal microorganisms (e.g., Staphylococcus spp., enterics, Candida spp.) were frequently found in peri-implantitis, differing from healthy implant microbiota.
    • Healthy peri-implant sulci harbored a microbiota similar to that around healthy teeth.

    Conclusions:

    • The subgingival microbiota differs significantly between healthy and peri-implantitis affected titanium implants.
    • The presence of non-periodontal pathogens alongside traditional periopathogens in peri-implantitis suggests unique etiological factors.
    • Microbiological analysis of peri-implant sulci can aid in selecting appropriate antimicrobial treatments for peri-implant infections.