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Reliability of the periapical index scoring system
1NIOM, Scandinavian Institute of Dental Materials, Haslum, Norway.
Scandinavian Journal of Dental Research
|April 1, 1988
Summary
The periapical index (PAI) scoring system demonstrates high reliability in assessing periapical status. This system accurately distinguishes between healthy and diseased periapices, proving useful in clinical studies.
Area of Science:
- Dentistry
- Radiology
- Endodontics
Background:
- The periapical index (PAI) is a radiographic scoring system used to evaluate the health of tissues surrounding the apex of a tooth.
- Assessing the reliability and usefulness of diagnostic tools is crucial for accurate clinical decision-making in endodontics.
Purpose of the Study:
- To evaluate the usefulness and reliability of the periapical index (PAI) scoring system.
- To determine the intra- and inter-examiner agreement for PAI scores.
- To assess the accuracy of the PAI system in identifying healthy versus diseased periapices over time.
Main Methods:
- Analysis of data from one methodological and two longitudinal clinical studies.
- Utilized the periapical index (PAI) scoring system for radiographic assessment.
- Evaluated intra-examiner and inter-examiner agreement in scoring periapical radiographs.
Main Results:
- Over 93% of PAI score pairs showed agreement or a one-step deviation for both intra- and inter-examiner assessments.
- Radiographs of healthy periapices were incorrectly scored as diseased in less than 3% of cases.
- Radiographs of diseased teeth were incorrectly scored as healthy in less than 7% of cases.
Conclusions:
- The periapical index (PAI) scoring system exhibits a high degree of reliability.
- The PAI system is a useful tool for assessing periapical status in clinical and research settings.
- The findings support the consistent application of the PAI system in endodontic evaluations.