ORAL HYGIENE IN CHILDREN WITH DISTURBANCES IN TOOTH FORMATION WHO WERE AFFECTED AS A CONSEQUENCE OF THE ChNPP ACCIDENT. / STAN GIGIIeNY POROZhNYNY ROTA U DITEI Z PORUShENNIaMY FORMUVANNIa ZUBIV, POSTRAZhDALYKh VNASLIDOK AVARIÏ NA ChAES.

OBJECTIVE: evaluation of oral hygiene to enhance the prophylaxis of complications specifically of dental caries inchildren with disturbances in tooth formation (DTF) who live on radiologically contaminated territories after theChornobyl NPP (ChNPP) accident. MATERIALS AND METHODS: Children aged 6-14 years (n = 1470) with DTF were the study subjects examined in 2012-2016. Among them there were (n = 528) residents of the zones III and IV of radiological contamination after theChNPP accident with 137Cs soil contamination density 1-15 Ci/km2. The effective radiation dose in them was notexceeding 1 mSv/year. The Green-Vermillion and Silness-Loe oral hygiene indices were assesses within clinicalexamination methods. RESULTS: The worth oral hygiene was revealed in children having got the DTF, compensated chronic diseases oforgans and systems, and in those with burdened radiation history. The Green-Vermilion and Silness-Loe indices were1.7 ± 0.51 and 1.65 ± 0.46 respectively. CONCLUSIONS: A significant deterioration in oral hygiene confirmed by the highest values of the Green-Vermillion index (1.7 ± 0.51; p < 0.001 - «unsatisfactory oral hygiene¼ criterion) and Silness-Loe index (1.65 ± 0.46; p < 0.001 -«poor oral hygiene¼ criterion) was found in children with DTF aged 6-14 years being residents of contaminated areasas a result of the Chernobyl accident. The revealed deterioration may be due to a set of negative factors, includingthe impact of ionizing radiation in low doses and peculiarities of social status. Results of the questioning of surveyed pediatric contingents both having got an DTF and with no defects of the hard tissues of teeth indicate aninsufficient level of knowledge and skills in hygienic care of oral cavity regardless of the area of residence.Development of a set of measures to prevent the DTF complications in children should be carried out taking intoaccount the state of oral hygiene, level of knowledge and skills in oral care, and include the use of hygiene products, namely toothpastes and anti-caries mouthwashes.

[Oral cavity microbial coenobia in healthy children and children with chronic recurrent aphthous stomatitis]. / Osoblyvosti mikrobiotsenozu rotovoï porozhnyny u zdorovykh ditei ta khvorykh na khronichnyi retsydyvnyi aftoznyi stomatyt.

Peculiarities of quantitative and qualitative composition of microbiocenosis of the oral cavity in healthy children and children with chronic aphthous recurrent stomatitis have been studied. Strains of microorganisms (n = 259) have been isolated and identified. The results obtained showed that the studied biotope is characterised by a wide spectrum of isolated microflora. The growth of microorganism association is observed in all the studied samples. The analysis of genus and species composition of microbiocenosis of the mucous membrane indicated that streptococci, neiserii, corynebacteria, enterococci, lactobacilli, epidermal staphylococci and candidas were distinguished as to isolation frequency among the isolated strains. These bacteria were isolated from oral cavity of healthy and sick children, but their quantity in 1 mm2 of sick children mucosa prevailed, except for Streptococcus salivarius, S. mitis and Lactobacillus sp.: their quantity was far less. Golden staphylococci, escherichia, klebsiella, clostridia, hemophilic rods and campylobacteria were isolated from sick children only.