Research Article
Reliability of Pederson Scale in Surgical Extraction of Impacted Lower Third Molars: Proposal of New Scale
Table 6
Pederson scale * Parant scale crosstabulation.
| | Parant scale |
Total | | Extraction by forceps | Extraction requiring osteotomy | Extraction requiring osteotomy and coronal section | Complex extraction |
| Pederson scale | | | | | | Slightly difficult | 14 | 19 | 2 | 2 | 37 | Moderately difficult | 2 | 24 | 22 | 3 | 51 | Very difficult | 0 | 8 | 4 | 6 | 12 |
| Total | 16 | 51 | 28 | 5 | 100 |
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