الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 125 |  |  |
| | | from | 125 | | |
Abstract
Chemical plaque control measures are considered one of the rnot effective method for prevention of dental caries. They provide an alternative method for plaque control for the children who do not have access for using mechanical means. These measures are available in different forms as gels, varnishs, pastes, solution and chewing gum.
This study was conducted to determine the effect of adding chiorhexidine, fluoride and urea to xylitol chewing-gum on plaque formation and the salivary and plaque streptococcus mutans and lactobacilli levels.
A total number of one hundred and twenty five child were randomly selected from different blind centers in Mansoura and Damietla cities. According to the type of chewing-gum used the selected children were randomly assigned into five equal groups, xylitol chewing-gum (as positive control group), xylitol / fluoride gum group, xylitol / urea gum group, xylitol “ CHX gum group and sucrose chewing gum (as negative control group.). Oral examination was performed to record plaque quantity. Silness and Loe plaque index was the index of choice.W7) Dental prophylaxis for each child was achieved to reach zero plaque score. Every child was given his assigned chewing gum and was instructed to use it for all around 14 day. One piece of chewing gum after breakfast meal for (10 mm) and another one after evening meal for (10mm). For each subeet plaque sample was collected prior to ‘rophylaxis and saliva sample before beginning the chewing period. The
-cond plaque and saliva sample were collected immediately after the chewing period (14 day). Each plaque and saliva sample was plated on Mitis Salivarius