%0 Journal Article %T CAUSES, DIAGNOSIS AND TREATMENT OF MAXILLARY SINUSITIS, THE CURRENT STATE OF THE PROBLEM %A Dregalkina, A.A. %A Kostina, I.N. %A Salii, O.V. %K maxillary sinusitis, foreign body of the paranasal sinuses, perforation of the maxillary sinus wall, sinusotomy, minimally invasive endoscopic surgery %J Actual problems in dentistry %D 2019 %N 15 %P 7 %I TIRAZH Publishing House