Dental caries is an infectious bacterial disease that results in
localized dissolution and destruction of thecalcified tissues of the
teeth. There are many dental materials which have antibacterial
effects.
The aim of this study is to evaluate th
e antibacterial effects of the
commercial types of Glass Ionomers Cement (GIC)Kaviton® CEM
and Composite Prime Dental® using at the Faculty of Dentistry in
Al- Hawash Private University (HPU), and to make comparsion
between these.
We used Bacteriological studies to determine the quality of water, through quick methods, simple and sensitive detection of water contaminants, and in particularly bacteria that indicated the health status of water quality. We presented in this study
the effect of sewage on distribution nutrients and the Streptococci bacteria. Seven samples were taken during the period 2013 to 2014, at a rate of two cruises per season. Some of these samples were taken in near sewage stations, others, to make a comparison, were taken in distant ones. The study showed an increase in nutrients. These bacteria were linked to a positive relationship with nutrients because the presence of nutrients stimulated bacterial growth.
A clinical trial cross over was carried out to compare the clinical effectiveness of the use of conventional toothbrush (Oral-B Indicator Plus) and (Soladey-eco) which is equipped with a rod of semiconductor of titanium dioxide (TiO2) to remove dent
al plaque and their impact on Streptococcus mutans counts (CFU) .
The Sample included 60 patients aged 13-19 years. The sample was equally divided into two groups: the first group used toothbrush (Oral-B Indicator Plus) and the second used toothbrush (Soladey-eco) twice daily for one month, followed by (wash out) period for two weeks, after which the exchange of the two groups for the two types of brushes, the examiner was blind.
To determine the effectiveness of the two brushes, the dental plaque index was calculated for every brush before and after brushing. The S .mutans (CFU) in saliva was calculated too but just for (n=30) before and after brushing.
Results showed that the use of the brush (Soladey-eco) has greater effectiveness in removing dental plaque and caused a reduction of Streptococcus mutans counts compared with the brush (Oral-B Indicator Plus) in the research sample
This research was conducted at the Faculty of Agriculture, Department of
Food Science laboratories to isolate lactic acid bacteria from some Syrian milk
products (milk, yogurt, cheese) and determine some morphological,
physiological characteristic and the ability of these isolates to ferment sugars.
This investigation was done in the laboratories of Faculty of Agriculture –
Damascus University Department of Food Sciences. The aim of this research
was to study the inhibition effect of the growth of Lactic acid bacteria used as
starter, on the
growth of S. typhi O9 bacteria. We used for this study a pure
strains of Salmonella typhi O9 and Lactic acid bacteria (Streptococcus
thermophilus and Lactobacillus bulgaricus). The effect of Lactic acid bacteria on
the number of S. typhi O9 was studied in 37 ◦C and 4◦C. The Lactic acid bacteria
were inoculeted in milk for the yoghurt manufacturing. The number of S. typhi
O9 decreased gradually with time. This decrease number of this bacteria was
more clear when both Str. thermophilus and Lb. bulgaricus were used as a
mixted starter, Lb. bulgaricus then when was used a single starter, or when Str.
thermophilus was used a alone. The S.typhi O9 disappear
This study was carried out to detect the presence of aero-mesophyllic
microorganisms and the patho-toxicogenic microorganisms in the consumed
variety meats of Awassi-sheep carcasses.
Surface cut samples of the tested organs with ١٢ cm٢ and ٢ mm in
thickness,
were taken immediately from animals slaughtered in the slaughterhouse or in
the commercial public market, where these consumable variety meats are sold.
