Table 3 Number and percentage of the upper teeth presenting rRCR = 100% (no RR), rRCR between 90 and 100 (slight RR), rRCR between 80 and 90 (moderate RR), and rRCR = 80 (severe RR)
From: Root resorption during orthodontic treatment with Invisalign®: a radiometric study
RCR % | 1.6 | 1.4 | 1.3 | 1.2 | 1.1 | 2.1 | 2.2 | 2.3 | 2.4 | 2.6 |
|---|---|---|---|---|---|---|---|---|---|---|
No. of teeth | 36 | 39 | 41 | 46 | 39 | 39 | 31 | 41 | 36 | 27 |
≥100 | 52.17% | 59.09% | 61.19% | 70.77% | 55.71% | 56.52% | 48.44% | 59.42% | 55.38% | 46.55% |
No. of teeth | 15 | 17 | 15 | 14 | 16 | 20 | 19 | 18 | 20 | 22 |
90 ≤ x < 100 | 21.74% | 25.75% | 22.39% | 21.54% | 28.86% | 28.98% | 29.69% | 26.08% | 30.77% | 37.93% |
No. of teeth | 16 | 9 | 9 | 4 | 13 | 7 | 9 | 8 | 3 | 7 |
80 ≤ x < 90 | 23.19% | 13.63% | 13.43% | 6.15% | 18.57% | 10.14% | 14.06% | 11.59% | 4.61% | 12.07% |
No. of teeth | 2 | 1 | 2 | 1 | 2 | 3 | 5 | 2 | 6 | 2 |
<80 | 2.9% | 1.51% | 2.98% | 1.54% | 2.86% | 4.35% | 7.81% | 2.9% | 9.23% | 3.45% |
TOT no. of teeth | 69 | 66 | 67 | 65 | 70 | 69 | 64 | 69 | 65 | 58 |
% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |