MUKHTAR, A.; MUSHTAQ, M.; SARTAJ, M.; FAROOQ, R.; RASHID, A.; AHMAD, F. EVALUATION OF SURFACE CHANGES IN PROTAPER UNIVERSAL ROTARY FILES AFTER SINGLE AND MULTIPLE USES IN SEMI CURVED CANALS WITH DIFFERENT IRRIGATING SOLUTIONS: A SEM ANALYSIS. International Journal of Pharmaceutical and Biological Science Archive, v. 7, n. 2, 30 abr. 2019.