Fig. 3From: Micro-computed tomography analysis of calcium hydroxide delivery efficacy in C-shaped canal system of mandibular second molarsThe uncontacted surface area of Ca(OH)2 with and without using lentulo spiral. (A-B) Uncontacted surface area (mm2) and Uncontacted surface area (%) of the entire canal with C-shaped or non-C-shaped PCF. (C-D) Uncontacted surface area (mm2) and Uncontacted surface area (%) of the apical region with C-shaped or non-C-shaped PCF. *P < 0.05, **P < 0.01, ***P < 0.001Back to article page