Fig. 4From: Micro-computed tomography analysis of calcium hydroxide delivery efficacy in C-shaped canal system of mandibular second molarsCa(OH)2 volume (mm3) and the percentage of volume (%) with and without using lentulo spiral. (A-B) Volume (mm3) and the percentage of volume (%) of Ca(OH)2 in the entire canal with C-shaped or non-C-shaped PCF. (C-D) Volume (mm3) and the percentage of volume (%) of Ca(OH)2 in the apical region with C-shaped or non-C-shaped PCF. *P < 0.05, **P < 0.01, ***P < 0.001Back to article page