Use of Cone Beam Computed Tomography in Endodontics
Figure 10
A periapical radiograph of the maxillary left first molar (a) shows an area of low density surrounding the mesial root with incomplete endodontic treatment. A contemporaneous CBCT parasagittal image (b) shows a chronic periradicular osteoperiostitis, or “halo lesion,” where the apical periodontitis has caused displacement of the periosteum but did not penetrate the antral floor. Three months after retreatment, CBCT imaging (c) demonstrates complete apical resolution.
