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The eruption of permanent teeth in children is a complex physiological process that is important for the development of the dentoalveolar system. The timing of eruption is a key indicator of biological age and prenosological diagnosis of children's health. The need to update research on this topic is due both to changes in society and the importance of modern data for pediatric dentistry and public health. The aim of the study was to determine the regional characteristics of the terms of eruption of permanent teeth in early mixed dentition among children of Odesa. Material and methods. Dental examination was performed on children aged 4 to 8 years of both sexes. The examination was performed according to the generally accepted methodology, using standard dental instruments included in the examination kit. The children were divided into groups according to age and sex. Patients were examined on the basis of age and period of teeth eruption. Results. The results of the study of the eruption of the permanent teeth of the upper and lower jaws in children aged 4.5-8.5 years in Odesa indicate an earlier eruption of the permanent teeth in girls. Thus, in girls the eruption of the first permanent molars began at the age of 4.5 years and ended at the age of 6 years. In boys, the age of onset of first molar eruption was 5 years and the age of completion was 6.5 years. It was found that the timing of the beginning and the end of the eruption of the central permanent incisors of the upper jaw was the same in boys and girls (6 years), but the average duration of eruption was different. The timing of the beginning and end of eruption of the upper lateral incisors was identical in boys and girls. However, differences in the average terms of eruption of permanent upper lateral incisors were obtained. The analysis of the results of the terms of eruption of the central permanent incisors of the lower jaw in boys and girls shows the same terms of beginning of eruption and average terms of eruption of these teeth. However, there were differences in the time of the end of eruption. The beginning of the eruption of the permanent central incisors of the upper jaw was noted earlier (at the age of 6 years) than the data given in the modern dental manuals of Ukraine and was completed at the age of 8 years. The age of the beginning and the end of eruption was one year earlier than the generally accepted data. The data on the time of eruption of the first permanent molars and incisors obtained as a result of the study are necessary for planning programs for prevention of dental caries in children in the period of early replacement dentition. The data obtained as a result of the study indicate the need for further epidemiological studies in other regions of Ukraine in order to establish the current national norms for the eruption of permanent teeth in children. Conclusion. The discrepancy between the dates of eruption of permanent incisors and molars in Odesa children and the standard dates of eruption of teeth was revealed, which indicates the need to clarify them in each region. Gender differences were found - earlier eruption of permanent teeth in girls. The data of the conducted research substantiate the necessity to revise the terms of caries prophylaxis in Odessa children and the necessity to conduct in-depth examination of children with violation of the terms of teeth eruption. [ABSTRACT FROM AUTHOR]