Fig. 14
From: Dentomaxillofacial imaging with panoramic views and cone beam CT
A deformed d. 21 was treated endodontically and resected several years ago. Clinically a fistula in the region d. 21 was found and fistulography with periapical radiography was done showing an apical periodontitis lesion (lower right). For the treatment planning a CBCT examination was done showing a large lesion indicating apical periodontitis with perforation of the labial cortex. Palatinally a vertical bone pocket is evident. Based on the CBCT findings extraction of the d. 21 was planned followed by implant treatment