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Related Experiment Videos

Testing reliability of plaque and gingival indices. Two methods.

N K Nordstrom1, E L Paikoff, J Uldricks

  • 1Ohio State University, College of Dentistry, Columbus 54210.

Journal of Periodontology
|April 1, 1988
PubMed
Summary

This study compared slide and clinical methods for evaluating plaque and gingival indices. Both methods achieved reliable results for gingival indices, but plaque indices required more practice with the slide technique.

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Area of Science:

  • Dental hygiene research
  • Clinical trial methodology

Background:

  • Accurate assessment of plaque and gingival indices is crucial for evaluating oral hygiene interventions.
  • Interexaminer and intraexaminer reliability are key metrics for validating assessment methods.

Purpose of the Study:

  • To compare the reliability of two methods (slide series vs. clinical examination) for assessing plaque and gingival indices.
  • To establish interexaminer and intraexaminer reliability for both plaque and gingival indices.

Main Methods:

  • A projected slide series of 40 clinical examples of gingival inflammation and plaque accumulation was used.
  • Two assessment methods were compared: a slide technique and a direct clinical examination technique.
  • Reliability was assessed over a three-week interval, with a third clinician assisting in the clinical assessments.

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Main Results:

  • Significant intraexaminer reliability was achieved for both Gingival Indices and Plaque Indices using the slide technique.
  • Interexaminer reliability was established for Gingival Indices with both methods.
  • Interexaminer reliability for Plaque Indices was achieved on a post-assessment using the slide technique, and was established using the clinical technique.
  • The clinical technique was deemed useful for assessing interexaminer reliability for Gingival Indices.
  • The slide technique for Plaque Indices required more practice compared to the clinical technique.

Conclusions:

  • The slide technique can yield significant inter- and intraexaminer reliabilities for gingival indices.
  • Both slide and clinical techniques are valuable for assessing interexaminer reliability in gingival indices.
  • Further practice may be beneficial for consistently achieving reliable plaque index scores using the slide technique.