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Related Experiment Videos

Prognostic variables associated with implant failure: a retrospective effectiveness study

M S Scurria1, Z V Morgan, A D Guckes

  • 1Department of Prosthodontics, University of North Carolina School of Dentistry, Chapel Hill, USA.

The International Journal of Oral & Maxillofacial Implants
|June 25, 1998
PubMed
Summary

This study found that dental implant survival rates were high, with only 8.9% failure. Key factors impacting dental implant success included posterior location and narrow implant width.

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Area of Science:

  • Dental Implantology
  • Biomaterials Science
  • Clinical Dentistry

Background:

  • Assessing dental implant survival rates is crucial for clinical decision-making.
  • Understanding factors influencing implant failure is essential for improving treatment outcomes.
  • Real-world data from non-trial settings provides valuable insights into implant performance.

Purpose of the Study:

  • To determine dental implant survival rates using life table analyses.
  • To identify prognostic variables associated with dental implant failure.
  • To analyze outcomes in a cohort treated by practitioners with varying experience levels.

Main Methods:

  • Retrospective study of 99 patients and 384 dental implants (1987-1994).
  • Life table analyses and proportional hazards models for survival and failure analysis.

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  • Survey data analysis to adjust for patient effects on identified significant variables.

    • Main Results:

    • Overall implant failure rate was 8.9% over a median follow-up of 3.6 years.
    • Posterior implant location was significantly associated with higher failure rates (P < .05).
    • Implant width less than 4.0 mm was also linked to increased implant failure (P < .05).

    Conclusions:

    • Dental implant survival rates are generally favorable, even in non-trial settings.
    • Implant location (posterior) and dimensions (width < 4.0 mm) are critical factors influencing failure risk.
    • These findings can inform surgical planning and patient selection for improved dental implant outcomes.