@article{Griroriev2022periapical, author={Griroriev, S.S. and Sorokoumova, D.V. and Kudinov, P.N.}, title={PERIAPICAL ABSCESS WITH FISTULA COMPLICATED BY MAXILLARY SINUSITIS (CLINICAL CASE)}, journal={Actual problems in dentistry}, publisher={TIRAZH Publishing House}, year={2022}, pages={39-43}, volume={17}, issue={4}, }