Table 2 Difficulty level classification of endodontic therapy
From: Expert consensus on difficulty assessment of endodontic therapy
Difficulty level classification | |
|---|---|
Level I | All risk factors are assessed into grade 1. |
Level II | Only one risk factor is assessed into grade 2, and the remaining are assessed into grade 1. |
Level III | Two or more risk factors are assessed into grade 2, or one is assessed into grade 3. |
Level IV | Two or more risk factors are assessed into grade 3. |
