A.R. MULLINA1, S.S. KSEMBAEV1, S.B. ORLINSKIY2, A.K. SALAKHOV1 1Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012 2Kazan Federal (Volga Region) University, 18 Kremlyovskaya St., Kazan, Russian Federation, 420008 Mullina A.R.— postgraduate student of Infant Dentistry Department, tel. +7-905-020-68-86, e-mail: ksembaev@rambler.ru1 Ksembaev S.S.— D. Med. Sc., Professor of Infant Dentistry Department, tel. +7-905-020-68-86, […]