Table 2.

Resorption status of the 42 ECR-affected teeth.

		Teeth after initial treatment (n = 42)	Teeth after surgical retreatment (n = 10)
Number of arrested root resorption		28	4
Number of persisting root resorption		14	6
Time interval (months) for detection of persisting ECR after treatment
	Minimum	2	6
	First quartile	8	7
	Median	>38	10
	Third quartile	>38	>34
	Maximum	21	31