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The effectiveness of caries treatment depends on many factors, such as the condition of dental tissues, the stage of root development, the period of dentition, the quality of preparation and isolation, the optimal choice of material for restoration. The problem of choosing the filling material is acute in each treatment of caries in children with mixed and permanent dentition. The aim: Todetermine and statistically substantiate parameters for choosing restorative material for permanent teeth in children with different stages of root development. Materials and methods: 248 children aged 7 to 11 (122 boys and 126 girls) and 246 children aged 12 to 17 (120 boys and 126 girls),students of Uzhhorod Secondary School №20 were examined. Restoration materials -"Polofil Supra" (VOCO, Germany) and "DyracteXtra" (Densply, USA). The following criteria were investigated: saliva pH, area of destruction of the occlusal surface of masticatory teeth, stage of root development, depth of the lesion and cavity topography, the acid resistance of the enamel. For the purpose of statistical justification of the selected parameters that pointed as significant in the choice of restorative materials, and for the analysis of the interrelations of the parameters studied, the Spearman correlation coefficient (r) was determined. The correlation coefficient was considered statistically significant when p &lt;0.05. Results: For children aged 7-17 years to restore permanent teeth during the period of mixed and permanent dentition, the best materials in use were: "Polofil Supra" (VOCO, Germany) and "DyracteXtra" (Dentsply, USA). Conclusion: To restore permanent teeth in any stage of root development, it is rational to use a compomer material "DyracteXtra" (r = 0.80), and a composite material "Polofil Supra" -under the conditions of the formed root, at a pH level of more than 6.2, a high degree acid resistance of the enamel and the area of destruction of the occlusal surface less than 0.55 (r = 0.72).

Statistical analysis of criteria for efficiency of filling of permanent teeth in children