TY CONF TI RETROSPECTIVE ANALYSIS OF THE PREVALENCE AND INTENSITY OF DENTAL CARIES IN 12-YEAR-OLDS IN SEVEROURALSK KW prevalence and intensity of caries KW 12-year-old children KW level of sanitation JO Materials of the International Congress "Dentistry of the Great Urals". December 4-6, 2019 AU Prihodkin, A.S. AU Brusnitsyna, E.V. PY 2024 PB TIRAZH Publishing House