TY JOUR TI COMPREHENSIVE STUDY OF DENTAL ORTHOPEDIC MORBIDITY IN ELDERLY PEOPLE AND THE WAYS TO ELIMINATE IT KW dentistry KW elderly age KW geriatrics KW dentition defect KW dental prosthetic design JO Actual problems in dentistry AU Fedorova, N.S. AU Saleev, R.A. PY 2021 IS 17 PB TIRAZH Publishing House