TY JOUR TI APPLICATION OF SUBEPITHELIAL VASCULARIZED PALATINE FLAP AND PRF IN THE COMPLEX THERAPY OF ACUTE ODONTOGENIC PERFORATIVE MAXILLARY SINUSITIS KW maxillofacial surgery KW dental surgery KW maxillary sinus perforation KW oroantral communication KW odontogenic maxillary sinusitis KW subepithelial palatine flap KW PRF KW elimination of oroantral communication KW mobilized muco-periosteal buccal flap KW maxillary sinus perforation closure JO Actual problems in dentistry AU Durnovo, Y.A. AU Fedorichev, A.O. AU Klochkov, A.S. AU Galkina, E.S. AU Shalenkova, I.V. PY 2020 IS 16 PB TIRAZH Publishing House