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Related Experiment Videos

Osseointegrated implants for single-tooth replacement: progress report from a multicenter prospective study after 3

W R Laney1, T Jemt, D Harris

  • 1Department of Dentistry, Mayo Clinic-Mayo Medical School, Rochester, Minnesota.

The International Journal of Oral & Maxillofacial Implants
|January 1, 1994
PubMed
Summary

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This 3-year study shows Brånemark implant-supported single-tooth restorations maintain a 97.2% success rate. Long-term data reveal stable peri-implant health and minimal bone loss, indicating reliable dental implant outcomes.

Area of Science:

  • Dental Implantology
  • Prosthodontics
  • Periodontology

Background:

  • Single-tooth restorations using Brånemark implants are a common dental solution.
  • Long-term prospective studies are crucial for evaluating implant success rates and stability.
  • Understanding factors influencing implant survival and peri-implant tissue health is essential.

Purpose of the Study:

  • To assess the 3-year clinical outcomes of single-tooth restorations supported by Brånemark implants.
  • To evaluate the cumulative success rate and survival of these implant restorations.
  • To monitor changes in peri-implant health, bone levels, and abutment screw stability over time.

Main Methods:

  • Prospective, multicenter study design.
  • Inclusion of 92 patients with single-tooth restorations on Brånemark implants.

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  • Follow-up assessments at 1 and 3 years, including clinical parameters and radiographic evaluation.

    • Main Results:

    • A 3-year cumulative success rate of 97.2% was achieved, with 82 of 92 original patients remaining.
    • No significant changes in gingivitis, pocket depth, bleeding index, or mobility were observed from year 1 to year 3.
    • Marginal bone resorption averaged less than 0.1 mm annually, and abutment screw loosening significantly decreased, especially with gold screws.

    Conclusions:

    • Brånemark implant-supported single-tooth restorations demonstrate high long-term success and survival rates.
    • Peri-implant tissues remain stable, with minimal bone loss and low complication rates after 3 years.
    • Gold abutment screws appear more secure than titanium, suggesting material choice may influence mechanical stability.