Study of the Effect of Aqueous Water Extracts of Pistacia lentiscus Bark on Some Bacteria Causing Oral Infections

This research has included Study of the effect of the cold and hot water extract of the gum plant on some isolated bacteria from the mouth. A number of Gram positive bacteria (Streptococcus mutans, Lactobacillus acidophilus and staphylococcus aureus) were isolated by Swab and Saliva samples and diagnosed by it cultured on selective media for each test bacterium. The results were showed the effect of cold and hot water extract for both bitter and sweet of Pistacia lentiscus on bacteria test. These findings were obtained from this study have appeared the concentration 300mg/ml of hot bitter plant extract was recorded inhibition zone with in a diameter of 14 mm inhibition on staphylococcus aureus. Regarding the cold bitter extract was given inhibition zone 14mm on Streptococcus mutans with in 300mg/ml. While the same extract has appeared inhibition area of 15 mm and 12 mm for the concentration of 300 and 200 mg/ml respectively on Lactobacillus acidophilus. Lastly, the hot and cold sweet extract hasn't any effect on all bacteria under study to all the concentrations of gum plant.