6Sandle HJ. Clinical update -The teeth and the maxillary sinus,The mutual inpact clinical procedures,disease conditions and their treatment implications part 2 odontigenis sinus disease and elective dinical procedures involving the maxillary antrum diagnosis and management [J].Aust Endod, 1999,25(1):32.
10Lewandowski B ,Mac>Pietrasz I. Problems with diagnosis and treatment ofan odontogenic fistula of facial skin[J]. Pol Merkur Lekarski,1997,2(8):120-121.
