Eugeniya N. Gvozdikova, Anatoliy M. Avanesov,, Department general and clinical dentistry, ORCID ID 0000-0003-4068-7698, Peoples Friendship University of Russia (RUDN University), 117198, 6 Mikhlukho-Makhlaiya Street, Federal State Budgetary Institution Russian Scientific Center of Roentgen radiology (RNCRR) of Ministry of Healthcare of Russian Federation, 117997, 86 Profsoyuznaya str