Table 6.

Classification of overall severity of apical root resorption in the two groups

Severity of AR	Fixed appliances (n, %)	Clear aligners (n, %)
0	14, 17.50%	25, 31.1%
1	64, 80%	54, 67.5%
2	1, 1.30%	1, 1.30%
3	1, 1.30%	0