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Periapical healing (Ostravik's criteria)
| Score | Criteria |
|---|---|
| 1 | Normal periapical structures |
| 2 | Small changes in bone structure |
| 3 | Changes in bone structure with some mineral loss |
| 4 | Periodontitis with well-defined radiolucent areas |
| 5 | Severe periodontitis with exacerbating features |
