Fig. 4From: Guided endodontics: accuracy of access cavity preparation and discrimination of angular and linear deviation on canal accessing ability—an ex vivo studyBoxplot of linear and angle deviation. Significant differences were indicated by asterisk: a Coronal linear deviation (mm) with 95% confidence interval in three groups. b Boxplot of apical linear deviation (mm) in three groups. c Boxplot of angle deviation (°) in three groupsBack to article page