TY JOUR TI THE EFFICIENCY OF ORTHODONTIC TREATMENT OF DISTAL OCCLUSION IN THE CHILDREN 7 YEARS OLD KW distal occlusion KW removable plate apparat KW myofunctional treiner T4K changing dentition KW orthodontic treatment JO Actual problems in dentistry AU Kosuga, S.Y. AU Sirotkina, V.S. PY 2019 IS 15 PB TIRAZH Publishing House