Childhood obesity is considered to be major concern that puts children at increased risk of poor cognitive functions, physical health and later in life they may develop many chronic diseases. The purpose of the study is to investigate the effect of obesity on children's developmental trajectories of cognitive functions (sustained attention, memory, logical thinking and executive functions) of the obese and normal Egyptian school-age children and to investigate if the BMI can be used as a predictor of cognitive performance in later adolescence and adulthood. This study is a cross-sectional prospective design. A sample of 463 healthy children of both sexes, of age ranged from 6-12 years, from elementary schools in Upper Egypt was recruited. Descriptive statistical analysis revealed that the obese children made more errors than their normal-weight counterparts. Based on study's results, the obese children had lower cognitive performance than their normal-weight counterparts and the BMI can be used as a predictor for the future cognitive functions in executive functions and memory domains but not sustained attention and logical thinking.

OBJECTIVE: To measure the required clinical time and volume of occlusal adjustment when the maxillary cast in a virtual articulator is set using one of three methods: a face scan, average value alignment and digitization of a conventionally mounted articulator. MATERIALS AND METHODS: In this randomised, triple blind, crossover trial; 11 molars requiring a single crown restoration were enrolled. Three crowns were designed and milled for every participant molar. Each of the three crowns was fabricated with the participant’s casts virtually mounted utilizing a different virtual mounting method. An impression was taken of the crown in place prior to occlusal adjustment. Occlusal adjustment was then performed and timed. After the occlusal adjustment, an impression of the adjusted crown was taken. The pre-adjustment and post-adjustment impression were superimposed and volumetrically analyzed to determine the volume of occlusal adjustment performed. Kruskal-Wallis test was used to compare between the groups. RESULTS: No statistically significant difference in occlusal adjustment time or volume was found between crowns fabricated with different virtual mounting methods. CONCLUSIONS: A simplified approach in virtual articulator mounting appears to be justified in construction of single full coverage prosthesis. Added labor, time and cost of more elaborate virtual mounting methods seem to be counterproductive.

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