%0 Journal Article %T PERIAPICAL ABSCESS WITH FISTULA COMPLICATED BY MAXILLARY SINUSITIS (CLINICAL CASE) %A Griroriev, S.S. %A Sorokoumova, D.V. %A Kudinov, P.N. %K endodontics, maxillary sinusitis, periapical abscess, apical dissection, apical diameter %J Actual problems in dentistry %D 2022 %N 17 %P 4 %I TIRAZH Publishing House