Diagnostic Accuracy of Periapical Radiography in Detection and Measurement of the External Root Resorption in Primary Molars: A Single-Blind Prospective Clinical Study

Figure 1

Mean (SD) of the errors of the radiograph examiners’ radiographic root resorption estimates (mm) in the case of each of the actual resorption extents (mm). The errors are computed as the actual resorption extent minus the radiographic resorption estimate; therefore, negative and positive errors, respectively, point to elongated (overestimated) and shortened (underestimated) radiographic root resorption estimates.