Figure 1.

The root canal treatment pictures of case report 1. The red color arrow marks determines the Schneider angle measured by the intersection of long axis of coronal third of root to the direction of apical foramen. (a) The preoperative radiograph showing pulpally infected tooth in relation to #37. (b) The working length radiograph showing the curved distal root of tooth in relation to #37. (c) The Schneider angle determined for distal root (95°) of tooth in relation to #37. (d) The final obturation of tooth in relation to #37