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Interrater agreement on subgingival calculus detection following scaling
1Department of Periodontics, University of Missouri-Kansas City, School of Dentistry 64108.
Journal of Dental Education
|May 1, 1992
Summary
Detecting subgingival calculus is challenging. This study found low interrater reliability in calculus detection, indicating a need for better calibration and objective methods in periodontics.
Area of Science:
- Periodontology
- Dental Diagnostics
Background:
- Subgingival calculus detection relies on subjective tactile sensations, posing challenges for accuracy and reliability.
- Assessing residual calculus after scaling is a critical skill in periodontal therapy.
Purpose of the Study:
- To evaluate interrater agreement and accuracy in detecting subgingival calculus among clinical examiners.
- To identify the need for improved calibration and objective detection techniques in periodontics.
Main Methods:
- A retrospective study analyzed 4,160 tooth surfaces for interrater agreement on residual subgingival calculus.
- A companion study assessed accuracy using simulated calculus on manikin teeth with multiple raters.
Main Results:
- Low interrater reliability was observed in both studies (Kappa = .33 and .34).
- The simulated calculus study showed a 49% true positive rate and a 51% false negative rate.
Conclusions:
- Current methods for detecting subgingival calculus exhibit low reliability and accuracy.
- There is a significant need for standardized examiner calibration and objective diagnostic tools in periodontics.
