Accuracy of digital periapical radiography and cone-beam computed tomography in detecting external root resorption

Abstract

PurposeThe purpose of this study was to evaluate and compare the efficacy of cone-beam computed tomography (CBCT) and digital intraoral radiography in diagnosing simulated small external root resorption cavities.Materials and MethodsCavities were drilled in 159 roots using a small spherical bur at different root levels and on all surfaces. The teeth were imaged both with intraoral digital radiography using image plates and with CBCT. Two sets of intraoral images were acquired per tooth: orthogonal (PA) which was the conventional periapical radiograph and mesioangulated (SET). Four readers were asked to rate their confidence level in detecting and locating the lesions. Receiver operating characteristic (ROC) analysis was performed to assess the accuracy of each modality in detecting the presence of lesions, the affected surface, and the affected level. Analysis of variation was used to compare the results and kappa analysis was used to evaluate interobserver agreement.ResultsA significant difference in the area under the ROC curves was found among the three modalities (P=0.0002), with CBCT (0.81) having a significantly higher value than PA (0.71) or SET (0.71). PA was slightly more accurate than SET, but the difference was not statistically significant. CBCT was also superior in locating the affected surface and level.ConclusionCBCT has already proven its superiority in detecting multiple dental conditions, and this study shows it to likewise be superior in detecting and locating incipient external root resorption.

Cone-beam computed tomography versus periapical radiograph for diagnosing external root resorption: A systematic review and meta-analysis

“…After that, the full texts of the reserved 31 citations were obtained and evaluated per the inclusion criteria. Finally, 15 studies were included in the systematic review [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] ( Figure 1). Among the enrolled studies, nine studies reported the diagnos- tic efficacy of CBCT with a sample size of 1097 suspected ERR sites, and 11 reported information of PR with a sample size of 1072 sites (five studies focused on both modalities).…”

The impact of Cone Beam CT on financial costs and orthodontists’ treatment decisions in the management of maxillary canines with eruption disturbance

“…The accuracy of detection of root resorption has been shown to be superior using CBCT compared with intraoral radiography (27,28). A higher diagnostic accuracy in detecting resorption may, however, not be of clinical interest as the long-term prognosis even for severe root resorption is relatively good (29).…”

The Effect of Two Different Voxel Sizes on the Diagnosis of External Root Resorption by Planmeca Cone Beam Computed Tomography System: an in vitro study

“…The results of application of two CBCT systems at different voxel resolutions for detecting small cavities of internal resorption were evaluated in a study by Kamburoglu & Kursan, in which the high resolutions of both systems yielded similar results in identifying internal resorption lesions, although one of the two systems somehow produced better results at low resolution [21,22,23].…”