Fig. 1From: Efficacy of different irrigant activation techniques for cleaning root canal anastomosisDigital images showing root sections at 2Â mm from WL (A) before instrumentation (B) after instrumentation (C) after final irrigation with (1) NA, (2) PUI, and (3) EDDY. Note that (2C) shows irregularities created in the canal due to the ultrasonic tip coming in contact with the dentinal walls during activation (arrow)Back to article page