Schröder AGD, et al. - Researchers compared the sensitivity and specificity of digital periapical radiography and cone-beam computed tomographic (CBCT) imaging in the detection of natural and simulated external root resorptions (ERRs) with micro–computed tomographic (micro-CT) imaging as the reference standard. For this analysis, 126 teeth were scanned using the SkyScan 1172 micro-CT scanner (Bruker microCT, Kontich, Belgium), and the images were assessed using NRecon software (Bruker microCT). For the detection of ERRs, CBCT imaging was the best method. They reported only 74.5% of natural ERR gaps were noted on the digital periapical radiographs and 94.5% on CBCT imaging; in the artificial group, this number increased to 81.8% and 100%, respectively. Findings revealed that the configuration of the natural ERR gaps was different from those artificially simulated and was much more difficult to observe.