Table 2.

Modified Andreasen classification.

Modified Andreasen classification based on the type of resorption
Internal resorption	(a) Internal inflammatory resorption
	(b) Internal replacement resorption
	(c) Transient apical breakdown
External resorption	(a) External surface resorption
	(b) External inflammatory resorption
	(c) External replacement resorption
	(d) External cervical resorption
	(e) Transient apical breakdown