Figure 1: Preoperative radiograph shows normal root canal anatomy and apical lesion (a); radiograph to determine working length (b); radiograph shows gutta-percha cones placed in canals (c); postobturation radiograph shows 6 root canals and independent apical foramina ((d) and (e)); clinical view of pulp chamber after root canal treatment (f); periapical repair 6 (g) and 18 months after treatment (h).