Comparison of the incidence of individual malocclusions in children with physiological replacement of teeth and children with premature loss of deciduous molars who reported for orthodontic treatment - Wojtaszek-Lis, Julita; Laskowska, Małgorzata; Lis, Krzysztof; Zadurska, Małgorzata (Forum Ortodontyczne / Orthodontic Forum, 2021)