Objectives:To assess the oral health status and salivary composition in a group of children suffering from bronchial asthma.Materials and Methods:The sample consisted of sixty asthmatic children, sixty healthy negative controls, and sixty healthy positive controls of both sexes with age ranging from 4 to 12 years old. The asthmatics were grouped according to disease severity into mild, moderate, or severe asthmatic. All the children were clinically examined to assess their dental caries experience (decayed, indicated for extraction, and filled primary tooth [def] and decayed-missing-filled permanent tooth [DMF]), dental erosion condition (tooth wear index), and gingival health condition (gingival index [GI]). Salivary samples were collected and assessed for salivary flow rate, salivary pH, and the level of calcium, sodium, and potassium.Results:The results of this study revealed that asthmatic children presented significantly higher def, DMF score, and GI mean values compared to the control groups. Severe asthmatics significantly presented the highest def and GI score. Salivary analysis revealed reduced stimulated salivary flow rate and altered salivary pH. In addition, significantly elevated mean salivary calcium level found to be associated with higher GI mean score.Conclusions:Children suffering from bronchial asthma should receive special dental preventive attention as presented with greater risk for oral and dental diseases as compared to the healthy controls.

Lake Qarun is a closed saline lake in the northern part of El-Fayoum Depression (Middle Egypt) at the margin of the Great Western Desert. It is almost entirely sustained by inflow from the Nile River and, during the 20th century, lake water salinity has increased strongly. Physico-chemical characteristics and phytoplankton periodicity in the lake were monitored during 2001. All the water quality variables measured showed considerable seasonal variation, and quantitative and qualitative differences in phytoplankton communities were recorded. The maximum crop density was in August, whereas lowest values occurred in December. Highest crop densities coincided with a high abundance of Bacillariophyceae. The Bacillariophyceae were most diverse with 23 species, Aquat. Sci. 67 (2005) 350 -362 Aquatic Sciences then Chlorophyceae with 16, Cyanophyceae with 8, and Chrysphyceae and Dinophyceae with one species each. Despite being a saline inland lake, the open-water phytoplankton communities were composed of some marine/ brackish forms but mainly of freshwater communities tolerant to high salinity. The identified phytoplankton species indicate a tendency towards eutrophy but total crop densities were relatively low compared with eutrophic lakes elsewhere. Light limitation by suspended solids as well as hydrological related factors are believed responsible for the relatively low phytoplankton abundance. The lake appears to be ecologically unstable and careful limnological monitoring is recommended.

No abstract

No abstract