For example, Porphyromonas gingivalis , a late colonizer of plaque, attaches to S. gordonii and A . Bacteria-extracellular polysaccharide binding. Other S . There are a variety of microbially produced compounds that can kill or inhibit the growth of other plaque bacteria. These include short chain fatty acids, organic acids, hydrogen sulfide and hydrogen peroxide.
Many oral bacteria produce bacteriocins capable of lysing other organisms.
Host Factors a. Diet. Saliva is one of the most important factors in determining the fate of bacteria in the mouth. In addition to physically washing away any unbound or loosely bound bacteria, saliva contains a number of components that have specific affects on bacteria.