Sheth K, Kapoor S, Daveshwar S.
Comparison of Cone-beam Computed Tomography and Periapical Radiography to Determine the Proximity of Periapical Lesions to Anatomical Structures in Premaxillary Area prior to Surgical Endodontics: A Clinical Study. 
Int J Clin Pediatr Dent
2020;
13
(4):322-326.