THE ANALYSIS OF RESERCH METHODS AND RESULTS ON RESISTANCE OF NICKEL-TITANIUM ENDODONTIC INSTRUMENTS TO TORSION LOAD: THE SYSTEMATIC REVIEW ArticleShirokova D.S., Khabadze Z.S., Voskresenskaya D.V., Ismailov F.R., Gasanova Z.M., Fedotova N.N.Эндодонтия Today. Том 19. 2021. С. 320-325
