Table 3.

Age evaluations

Root Resorption After Treatment	Age Groups (years)		P a
12-17 (n=222), n (%)	18-30 (n=78), n (%)
No	210 (94.6)	65 (83.3)	.002**
Yes	12 (5.4)	13 (16.7)

^aPearson chi-square test; ^**P < .01.