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].

PAIDescription

1Normal periapical structure
2Small changes in the bone structure
3Changes in the bone structure with some mineral loss
4Periodontitis with a well-defined radiolucent area
5Severe periodontitis with exacerbating features