[Oral status of persons with dysplastic phenotype living in different climatic and geographical conditions]

To estimate the influence the dysplastic phenotype on the stomatological status in the persons living in the different climatic and geographical conditions (the south of Tyumen region, Khanty-Mansiysk and Yamalo-Nenets autonomous districts).

The cross-sectional and observational study of 578 male and female adolescents aged 13.65±1.7 was carried out. The level of oral hygiene, caries intensity and spreading and parodontium inflammatory diseases were estimated. All examined persons were divided into 2 groups depending on the presence of signs of connective tissue dysplasia (CTD).

The significant spreading of undifferentiated forms of CTD was determined. It was 53.05% on the territory of the south of Tyumen region, 63.7% was in Khanty-Mansiysk district, 64.4% was in Yamalo-Nenets district (p=0.010). The involvement of the dento-maxillary system in the process was observed in 83.1% of adolescents with CTD. Caries spreading and intensity is significantly higher in the group of adolescents with CTD. The differences are statistically significant in all studied climatic and geographical zones. The higher spreading of signs of parodontium inflammatory diseases in the presence of CTD is registered. Spreading of parodontium inflammatory diseases among adolescents with CTD is statistically higher in Khanty-Mansiysk and Yamalo-Nenets autonomous districts than in the south of Tyumen region (p=0.004 and p<0.0001 respectively).

In the circumpolar region the share of persons with CTD and dysplastic depended changes of dento-maxillary system is statistically higher than on the territory of moderate latitudes. In the presence of CTD caries spreading and parodontium inflammatory diseases increases considerably but in the circumpolar zone the changes are significantly marked. The further study of the role of some factors including confounding in the dysplastic phenotype forming and stomatological pathology in the different climatic and geographical zone conditions is required.