Dental examination of 97 children with phenylketonuria aged from 2 to 18 years was carried out; the increasing intensity of tooth decay, dynamic changes in the condition of oral hygiene as well as periodontal status were assessed during dental treatment and 2-year preventive measures implementation in this group of children.
The data were analyzed by means of the program Statistica 10.0 utilizing the χ2-test, U-Mann-Whitney and t-Student test. As a result of dental treatment and preventive measures in children with phenylketonuria, the main indicators of dental status significantly improved: the increase in the intensity of dental caries in the children of the preventive group was significantly lower than that of patients in the test group. The level of oral hygiene and the condition of periodontal tissues in children who followed all the recommendations of a dentist, have significantly improved in 24 months after the onset of observation, the level of dental care exceeded up to 90%.

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