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Number of different lesion grades in each group
| Nylon group | Silk group | |
|---|---|---|
| Number of lesion Grade 1 | 3 | 1 |
| Percentage of lesion Grade 1 (%) | 12 | 4 |
| Number of lesion Grade 2 | 19 | 22 |
| Percentage of lesion Grade 2 (%) | 76 | 88 |
| Number of lesion Grade 3 | 3 | 2 |
| Percentage of lesion Grade 3 (%) | 12 | 8 |
