Fig. 4
From: Does endodontics influence radiological detection of external root resorption? an in vitro study
Illustration of measurements on DPR and CBCT images of endodontic tooth no.1. a Measurements of mesial and distal ERR on DPR images. b Location of guides for measuring the diameter of palatal ERR in the sagittal plane on CBCT images. c Axial plane view to help visualize the mesial, distal, and palatal resorption pits on CBCT images (d) Guides for measuring diameters of mesial and distal ERR in the coronal plane on CBCT images