Dr. Krishna Prasada L. 2020. “A COMPARATIVE STUDY TO EVALUATE THE ACCURACY OF CBCT, DIGITAL RADIOGRAPHY AND INTRA ORAL PERIAPICAL RADIOGRAPHY FOR THE ASSESSMENT OF THE ANATOMY OF THE MAXILLARY SECOND PREMOLAR ROOT CANALS: AN INVITRO STUDY”. International Journal of Medical Science And Diagnosis Research 4 (3). http://www.ijmsdr.com/index.php/ijmsdr/article/view/538.