00766naa#a2200181#i#450# EN\\bibl\4037 20240425225239.4 20200218b2020####ek#y0engy0150####ca RU CLINICAL ASSESSMENT OF THE DENTAL STATUS OF ELDERLY PATIENTS WITH CHRONIC PERIODONTITIS AND MISSING TEETH IN THE STAGE OF PREPARATION FOR ORTHOPEDIC TREATMENT Conference article/thesis Ekaterinburg TIRAZH Publishing House 2020 2 с. Conference article/thesis local Медицина. Охрана здоровья. 61 Lipina T. V. Elovicova Tat'yana Mihaylovna Griroriev Sergey Sergeevich dental-press.ru