Figure 1From: Efficacy of four different irrigation techniques combined with 60°C 3% sodium hypochlorite and 17% EDTA in smear layer removal The smear layer removal of root canal walls of apical, middle, and coronal thirds in five different irrigation techniques displayed in columns (from left); original magnification, 1000×. Side-vented needle group ( A-C ), UI group ( D-F ), NaviTip FX group ( G-I ), EndoActivator group ( J-L ), Control group ( M-O ).Back to article page