Radiographs and CBCT are valuable diagnostic tools to help you determine the presence of a root fracture. Unfortunately, unless the fracture is wider than about .15 mm (the tip of a #15 endodontic file), it cannot be visualized on the CBCT scan. However, there are some strong associations between radiographic findings and the presence of a root fracture. Specifically, when the bone loss presents in “J” shaped pattern, it is highly suggestive that a root fracture is present. Often, this can be seen on a two-dimensional periapical radiograph with the bony lesion typically extending from the apex to the crestal bone, sometimes resulting in a deep and narrow isolated periodontal pocket. Sometimes this pocket cannot be probed because it occurs in the interproximal area.