TY CONF TI CLINICAL ASSESSMENT OF THE DENTAL STATUS OF ELDERLY PATIENTS WITH CHRONIC PERIODONTITIS AND MISSING TEETH IN THE STAGE OF PREPARATION FOR ORTHOPEDIC TREATMENT KW dental status KW elderly patients KW periodontitis JO Materials of the International Congress "Dentistry of the Great Urals". December 4-6, 2019 AU Lipina, T.V. AU Elovicova, T.M. AU Griroriev, S.S. PY 2024 PB TIRAZH Publishing House