For citations:
Khadyeva M.N., Blashkova S.L., Galiullin A.N. Prevalence of periodontal diseases in children under 6 years old in the Republic of Tatarstan: impact of age and family structure. Pediatric dentistry and dental prophylaxis. 2023;23(4):361-370. (In Russ.) https://doi.org/10.33925/1683-3031-2023-659