Endodontic Procedural Errors: Frequency, Type of Error, and the Most Frequently Treated Tooth

Figure 4

Distribution of endodontically treated teeth [UR: upper right, UL: upper left, LR: lower right, LL: lower left, CI: central incisor, LI: lateral incisor, C: canine, 1P: first premolar, 2P: second premolar, 1M: first molar, 2M: second molar, and 3M: third molar].