The authors conducted logopedic and orthodontic inspection 2284 (from them 1115 boys and 1169 girls) children living in Tashkent, in the age of from 6 till 14 years. For revealing prevalence and interrelation of infringement pronunciation at children with anomaly and deformation dentition systems the technique of complex treatment (orthodontic and logopedic) children of a replaceable bite also is developed. For definition of the orthodontic and logopedic status of surveyed children carried out clinical researches and functional tests, and also, necessarily, anthopometrical measurements. By means of special functional tests spent the functional speech tests directed on definitions of normal or pathological character pronunciation. Carried out researches have allowed to reveal high enough prevalence dentition anomalies and deformations at 1496 children from 2284 (65,49 %), and at 824 (36,08 %) - defects pronunciation. Duly revealing, drawing up and carrying out of a comprehensive plan of treatment and preventive actions are the mortgage of successful elimination dentition anomalies and deformations dental of some at children. Only joint activity of experts of medical and pedagogical structures has allowed to eliminate in due time and effectively anatomic infringements in a structure of the bodies participating in an articulation, and to correct maxillofacial development of an organism of children as a whole.