The other half of constant oral microflora before and veylonellami diphtheroids. Staphylococci, lactobacilli, flagellate organisms, spirochetes, Leptospira, fuzobakterii, bacteroides, Neisseria, yeasts and other fungi, as well as protozoa found in the mouth in much smaller quantities. These data indicate the need to distinguish between major and minor permanent representatives of microflora of the mouth. After the birth of a child develops a characteristic only for him microbial ecosystem. When isolates from different areas of the oral cavity of adults noted the predominance of certain species in different parts of the mouth. This suggests that some species have an advantage in certain areas of the cavity mouth, which may be associated with specific physiological conditions in this place.
For example, Str.mutans – prevail on the surfaces of the teeth, Str.salivarius – a language with which washes away the saliva and are present in it, B.melaninogenicus found in large amounts in the sulcus. Bacteria in the mouth all the time, trapped in it due to adhesion to the structures of the oral cavity or to other microorganisms, and as a result of mechanical delays. Adhesion may be due to the synthesis of extracellular microbe polymers such as dextran, hyaluronic acid. Certain microbes synthesize a specific polymer. Some microbes can exercise adherence by mucin saliva. Another possibility of adhesion – a specific interaction between the surface layers of micro-organisms of different species. The nature of such adhesion poorly understood. Microorganisms that do not have adhesive structures may linger in the mouth mechanically in the gaps between the teeth, gingival grooves, cavities, etc.
On the representation and the number of bacteria is influenced by such factors as age, sex, nature of power. Nature and the amount of carbohydrates and proteins ultimately determine what microbes are "prosper" and which "fade". Drinking large quantities of sugar increases the amount of plaque and the prevalence of it and Str.mutans Str.sanguis. Substrates food microflora may be amino acids and proteins of saliva. Some bacteria may receive a number of metabolites from other bacteria, such as formic and lactic acids produced by bacteria can be energy source for veylonell. Great influence on the quantitative and, in some cases and species of microorganisms provides oral hygiene. With poor hygiene bacteria sharply increasing, especially anaerobes, and putrefactive bacteria. The number of microorganisms in the oral cavity changes during the day, with the leading role belongs to the formation rate of saliva, which decreases sharply at night time. Tooth loss also reduces the amount of microbial flora. Temporary or permanent changes in the content of individual representatives of the microflora can be caused by taking antibiotics, diet changes, elimination of all lesions and the removal of decayed teeth. Source: Meditsincky portal