الفهرس 
Role of aloe vera versus fluoride toothpaste in changing high to low salivary bacterial count
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Abstract
This study was conducted to evaluate the role of aloe vera tooth paste compared to fluoride containing toothpaste in changing high to low salivary bacterial count. 58 participants were selected and divided into two main groups, each consisting of 29 subjects as follows: group A1: with fluoride toothpaste (Signal Cavity Fighter) and group A2: with aloe vera herbal toothpaste (AloeDent Triple action).The study took place over a period of 30 days .Saliva collection (to assess the bacterial count) was performed at baseline, after15 days, and after 30 days.The saliva samples were cultured in plates contained mitis salivarius bacitracin agar selective for streptococcus mutans for determining streptococcus mutans count and kept at 37{u00B0}C for 48 hours in an incubator. The bacterial colonies on the plates were expressed as number of colony forming units per milliliter (CFU/ml) of saliva. Significance of the difference in bacterial count in both groups was evaluated using unpaired t test. Two way ANOVA test was used to study the interaction of the time and treatment (group) variables (p=0.05). The percentage of change after treatment was calculated. The results revealed that, in aloe vera group, the mean bacterial count was the highest at baseline, significantly decreased after15 days, then becomes nearly constant, with no significant difference between the mean values after 15 days and after 30 days. In fluoride group, the mean bacterial count was highest at baseline, and then significantly decreased gradually after15 days and after 30 days