Analysis of radiographs

Double canals are almost always located bucco-lingually, so that they may be difficult to detect in radiographs. However, a reliable way to identify double canals is to follow the radiographic shadow of the canal; if the shadow suddenly almost disappears, it is a strong indication of canal ramification.

Taking the radiograph at a different horizontal angle also helps to find double canals in many teeth. In looking for double canals it is important to identify the periodontal ligament space that often projects on the tooth and may resemble a canal.