Research Article
Outcome of Root Canal Treatment of Necrotic Teeth with Apical Periodontitis Filled with a Bioceramic-Based Sealer
Table 3
Description of the PAI scoring system [
10].
| PAI | Description |
| 1 | Normal periapical structure | 2 | Small changes in the bone structure | 3 | Changes in the bone structure with some mineral loss | 4 | Periodontitis with a well-defined radiolucent area | 5 | Severe periodontitis with exacerbating features |
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