TY JOUR TI MODERN VIEW ON ANTIBACTERIAL TREATMENT OF A ROOT CHANNEL WITH A BREAK-OFF OF ENDODONTIC TOOL KW laser photodynamic system KW drug treatment KW fragments of endodontic instrument KW periodontitis KW root canal JO Actual problems in dentistry AU Karakov, K.G. AU Khachaturyan, E.E. AU Uzdenov, M.B. AU Uzdenoba, L.K. AU Khachaturyan, A.E. AU Eryomenko, A.V. AU Usnunc, Y.K. PY 2019 IS 15 PB TIRAZH Publishing House