TY JOUR TI FEATURES OF PERFORMING PROFESSIONAL ORAL HYGIENE IN PATIENTS WITH CROHN’S DISEASE USING OPTICAL SYSTEMS (CLINICAL CASE) KW Crohn’s disease KW endoscope KW surgical microscope KW binocular magnifiers KW professional hygiene JO Actual problems in dentistry AU Artemyev, N.A. AU Kropotina, A.Y. AU LOBODA, E.S. AU OREKHOVA, L.Y. AU Korobkin, N.S. AU Silina, E.S. AU Ermaeva, S.S. PY 2026 IS 2021 PB TIRAZH Publishing House