1. J. Е. Frencken, P. Sharma, L. Stenhouse, D. Green, D. Laverty, T. Di etrich. Global epidemiology of dental caries and severe periodontitis - a comprehensive review. J. Clin Periodontol. 2017,44(18):94-105. https://doi.org/10.1111/jcpe.12677.
2. L. Yu. Orekhova. Periodontal Disease. Saint-Petersburg. 2004:432. (In Russ.).
3. О. О. Yanushevich, Yu. М. Maksimovsky L. N. Maksimovskaya, L. Yu. Orekhova. Therapeutic dentistry. Textbook for high schools. Moscow. 2016:760. (In Russ.).
4. Е. A. Bragin, А. V. Kheigetyan Posterior contact surfaces car ies prevalence rate (Black II class) according to the panoramic tomography results. Kuban Scientific Medical Bulletin. 2013;6:42-45. (In Russ.). https://cyberleninka.ru/article/n/chastota-vstrechaemosti-kariesa-kontaktnyh-pover-hnostey-bokovyh-zubov-ii-klass-po-bleku-po-dannym-panoramnoy-tomografii.
5. Stanley J. Nelson WHEELER'S Dental Anatomy, Physiology, and Occlusion. Las Vegas: Elsevier. 2015:350.