The need for ortho- dontic treatment in school children in the town of Niš, Serbia, is similar to the need in most European countries, despite the fact that the number of children orthodontically treated is much higher compared to most of European countries.

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Kratak sadržaj. Uvod. Sella turcica je deo kranijalne baze u kome je smeštena hipofiza. Smatra se da postoji korelacija izmedju veličine kranijalne baze a samim tim i sella turcice kao njenog sastavnog dela i malokluzija. UvodKranijalna baza predstavlja osnovu na kojoj se razvija humano lice i brojna istraživanja pokazuju da dimenzije srednje kranijalne fose utiču na odnose izmedju nazomaksilarnog kompleksa i malokluzija. 1,2 U kranijalnoj bazi, u centru sella turcika (ST) nalazi se jedna od najčešće korišćenih kranijalnih tačaka u kefalometriji, pod istoimenim nazivom -sella turcica. U anatomskom delu sella turcice smeštena je hipofiza.Kefalometrijska ispitivanja osoba sa patologijom hipofize mogu, u nekim slučajevima, po- Abstract Introduction. Sella turcica is a part of cranial base where the pituitary is located. It is believed that there is a correlation between the size of the cranial base and thus sella turcica as its integral part and the malocclusions. The goal of this study was to determine the linear dimensions of ST by radiological analysis of different malocclusions, to determine the existence of sexual dimorphism and to determine the connection between

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Background/Aim. Nowadays therapy with fixed orthodontic appliances is widely spread, having in mind positive effects it has in malocclusion treatments The side effect is increased gingivial inflammation in treated patients. The aims of this research are to estimate the inflammatory condition of gingiva in the first 6 months of orthodontic therapy on the basis of clinical parameters of sulcus bleeding index, plaque index, gingival crevicular fluid and salivary nitric oxide concentration, and to investigate role of nitric oxide as predicting factor of gingival inflammation in orthodontic patients. Methods. In this study, 30 patients of the Dental Clinic treated with fixed orthodontic appliances (11 males and 19 females), aged 15-22 years, were examined. Clinical parameters were evaluated and gingival crevicular fluid and saliva were collected, before the beginning of orthodontics therapy, and then, three and six months after it. Results. The approximate values of clinical parameters, gingival crevicular fluid and salivary nitric oxide concentration progressively increased. Low statistical significance of correlations among gingival crevicular fluid and salivary nitric oxide concentration and the measured clinical parameters were found. There is a statistically significant correlation between gingival crevicular fluid and salivary nitric oxide concentration. Conclusion. According to the obtained results, we can conclude that gingival crevicular fluid and saliva are reliable mediums for monitoring of the gingival inflammatory condition. More studies are needed to investigate a potential role of nitric oxide as predicting factor of gingival inflammation in orthodontic patients.