%0 Conference Article %T COMPARATIVE EVALUATION OF THE EFFECTIVENESS OF THE APPLICATION OF DIAMOND BUR, ULTRASONIC TIP START-X AND ENDODONTIC BURS MANS TO RETRIEVE THE FIBERGLASS PIN %A Griroriev, S.S. %A Basargina, A.D. %A Eremina, A.L. %A Panfilov, P.E. %A Sorokoumova, D.V. %K fiberglass pin, fiberglass pin extraction, repeated endodontic treatment %J Materials of the International Congress "Dentistry of the Great Urals". December 4-6, 2019 %D 2022 %P 2 %I TIRAZH Publishing House