Kryvtsova, M., Kostenko, Y., Bida, O., Burlik, V., Mandula, R., Bida, O. and Klymchak, V. 2026. ANTIMICROBIAL RESISTANCE OF OPPORTUNISTIC ORAL ISOLATES: A COMPARATIVE MONITORING STUDY (2021 AND 2025). Eastern Ukrainian Medical Journal. 14, 2 (Jun. 2026), 555-565. DOI:https://doi.org/10.21272/eumj.2026;14(2);555-565.