Investigation of Coronal Leakage of Root Fillings after Smear Layer Removal with EDTA or Er,Cr:YSGG Laser through Capillary Flow Porometry
Figure 2
Photomicrographs of root canal wall in each group after final cleaning protocols (original magnification: 2000x; scalebar is 10 μm). Images (a)–(e) show canal walls at 1, 3, 6, 8, and 12 mm from the apex. In groups 1 and 6, a typical amorphous smear layer on root canal wall, with limited opening of the dentinal tubules, was observed up to 3 mm from the apical preparation point. At 6 mm, remnants of debris and smear layer were observed. (a) is at 1 mm from the apex and (e) is at 12 mm from the apex.
