Table 5.
Classification of overall severity of apical root resorption (ARR) in the two groups
| Severity of ARR | Clear aligners (N, %) | Fixed appliances (N, %) | ||
|---|---|---|---|---|
| 0° | 163 | 43.70% | 67 | 18.16% |
| 1° | 210 | 56.30% | 228 | 61.79% |
| 2° | 0 | 0 | 71 | 19.24% |
| 3° | 0 | 0 | 3 | 0.81% |
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