From: Marga Ree
To: ROOTS
Sent: Friday, May 14, 2010 8:23 AM
Subject: [roots] lesion associated with resorption defect

45 year old woman sought treatment for the sinus tract and the yellow appearance of her lower incisor.
At first glance, I thought of an internal resorption defect perforating the root, but after looking
at a angled rad, you can see that the defect moves to the mesial side, indicating an external proces.
CaOH application is perfect for visualizing the defect (poor mans CBCT....:-)), and because I suspected
a perforation, I filled the apical part with MTA in a next session. To save time, I applied a moist
cotton pellet on top of the MTA, then cavit on top of the pellet, and then sodium perborate for
internal bleaching.Although I gave her a guarded prognosis, it worked out well - Marga