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Periodontal files--a comparative study

R Pasquini1, S M Clark, S Baradaran

  • 1School of Dentistry, Oregon Health Sciences University, Portland, USA.

Journal of Periodontology
|December 1, 1995
PubMed
Summary
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Periodontal file sharpness and active angles vary widely, impacting root instrumentation effectiveness. Sharpening devices showed inconsistent results, suggesting limitations in current periodontal file maintenance.

Area of Science:

  • Dentistry
  • Periodontology
  • Materials Science

Background:

  • Periodontal files are essential tools for root surface instrumentation in periodontal therapy.
  • Variability in file characteristics may affect treatment outcomes.

Purpose of the Study:

  • To evaluate periodontal files in new, used, and sharpened conditions.
  • To assess the efficacy of five different periodontal file sharpening devices.

Main Methods:

  • Analysis of blade characteristics: number, shape, interval, and angles (active, rake, lip).
  • Evaluation of wear patterns (abrasion, fracture) and sharpness scores (1-5).
  • Assessment of sharpening device performance and consistency.

Main Results:

Related Experiment Videos

  • Significant variability observed in active angles (30-87 degrees) and sharpness scores (1-5) across new files.
  • Wear was minimal and inconsistent; sharpening attempts yielded variable outcomes.
  • All tested sharpening devices exhibited notable shortcomings.

Conclusions:

  • Extreme variations in active angles and sharpness scores likely influence the effectiveness of root instrumentation.
  • Current periodontal file sharpening methods are inconsistent and may not restore optimal performance.