1. Glazunov OA, Korneychuk AE. Dental status of mature and elderly men with generalized periodontitis. Bulletin Dentistry. 2016;(1):21–24. (In Russ).
2. Yanushevich OO, Kuz'mina EM, Maksimovskiy Yu, et al. Clinical guidelines (treatment protocols) for the diagnosis of periodontitis. Moscow; 2018. 878 р. (In Russ).
3. Periodontics: national guidelines. Ed. by O.O. Yanushevich, L.A. Dmitrieva. Moskva: GEOTAR-Media; 2018. 752 р. (In Russ).
4. Starikova IV, Radyshevskaya TN, Plesunova VY, Znamenshchikova DA. Analysis of dental morbidity in the elderly. Collocvium-Journal. 2019;(23-1):69–71. (In Russ).
5. Efimenko NV, Gluhov AN, Danilov SR, et al. Research of resort resources is a priority task of the Federal State Budgetary Institution PGNIIK FMBA of Russia. Spa Medicine. 2015;(3):8–13. (In Russ).