Research Article
Reliability of Pederson Scale in Surgical Extraction of Impacted Lower Third Molars: Proposal of New Scale
Table 2
Kharma scale/relationship (position of the molar).
| Mesioangular | 0 | Horizontal/transverse | 1 | Vertical | 2 | Distoangular | 3 | Depth | | Level A: high occlusal level | 1 | Level B: medium occlusal level | 2 | Level C: deep occlusal level | 3 | Ramus relationship/space available | | Class 1: sufficient space | 0 | Class 2: reduced space | 1 | Class 3: no space | 2 | Roots form | | Convergent | 0 | Divergent | 1 | Bulbous | 2 | Difficulty index | | Very difficult | 7–10 | Moderately difficult | 5–7 | Slightly difficult | 3-4 | Easy | 1-2 |
|
|