The aim of the study was to study the medical and demographic prognosis in orthopedic treatment of secondary complete adentia based on literary data. So, among the elderly, secondary complete adentia in the Russian Federation and the CIS countries averages 8.9%. Over the next 20 years, the number of men and women with the diagnosis of secondary edentulism in these countries will increase by 4-7%. According to a pessimistic forecast based on the current demographic situation in the Russian Federation, the number of this contingent by 2015 will be 14.7 million, by 2020 - 15.1 million, by 2025 - 15.7 million, by 2030 - 16.3 million people. Dental medical and social aspect of rehabilitation of this group of contingents without oral cavity sanitation and the restoration of chewing function cannot affect the improvement of their quality of life.