In order to analyze the complexity and cost of methods of modern orthodontic treatment for children in the mixed bite period as well as to determine the necessary costs for eliminating dentoalveolar anomalies in primary school children taking into account the prevalence of anomalies we studied the duration and frequency of orthodontist visits during treatment using the 2x4 technique, a removable plate with artificial teeth, a ring with a spacer, a plate with a front bite pad, a plate with a shutter for the tongue, and Twin-block appliance, Dilar mask in combination with an expansion apparatus, plates with a screw, appliance with a hyrax expansion screw. Based on the complexity the salary of the orthodontist and other personnel, the costs of maintaining the doctor’s workplace and the dental technician are calculated. The cost of consumables at the clinical and dental stages was determined considering the purchase prices and the cost of a specific manipulation by weighing or measuring. When calculating the necessary funding for early orthodontic treatment modern data on the prevalence and structure of orthodontic pathology in children during the mixed bite period were used. It was found that the complexity of modern orthodontic treatment during the mixed bite period varies from 5.55 hours (spacer with a ring for premature loss of a temporary tooth) to 10.73 hours in the treatment of a distal bite with a twin-block device. The cost of orthodontic treatment in mixed bite varies from 12.6 thousand rubles (a spacer with a ring for premature loss of a temporary tooth) to 33.4 thousand rubles for the treatment of a mesial bite using a Dilar mask in combination with an expanding device. Given the prevalence of dentoalveolar anomalies in children during mixed bite period, the necessary financial costs for orthodontic treatment per child examined should be at least 30 thousand rubles, and at least 40 thousand rubles for a child with a dentoalveolar anomaly.