[Characteristics of fungi and attempts of their elimination from the oral cavity in children treated with orthodontic appliances].

Microbiological evaluation of oral cavity was performed in 112 children, aged 6-18 years, with retrogenic defects (group I) and other defects (group II). The material for microbiological investigation consisted of contents of oral cavity cultured on the Sabouraud broth. Isolated abacterial strains of fungi were differentiated according to their morphological and biochemical properties. Among isolated fungi, independently of the bite defects and age of children, highest percentage of strains of Candida albicans was noted. Remaining species represented genus Candida (C. glabrata, C. guilliermondii, C. krusei, C. parapsilosis, C. pseudotropicalis, C. zeylanoides), Geotrichum (G. candidum), Rhodotorula (R. rubra) and Trichosporon (T. cutaneum). Fungi were present in oral cavity in 45% (age 6-8 years) and 36.4% (age 9-18 years) of group I patients. In group II these percentages were respectively 15.2 and 58.7. In control groups occurrence of fungi was 3-4 times lower. Despite application of disinfectants and treatment with nystatin, frequency of isolation of fungi did not change.