It has documented that anaerobe has played important roles in the progress of periodontitis.Recently,the detection of its pathogens has caught more and more attention.This study has sieved physiological and biochemical reactions of more than 80 species anaerobes related to periodontics,selected the reactions with identifying significances to form a system,and identify bacterium according to their differences of the results to the selected reactions.The results of each bacteria is expressed with decimal number.then transfer it into the decimal number.So the decimal number represents the results of the bacteria to the selected reactions and represents a certain bacteria.The profile that the bacterium correspond to the numbers is designed.When the bacteria is identified,on the basis of its Gram stain,morphology and oxygen-tolerance,using compling program,the computer with suggest the reactions to be finished.After the reactions have been completed,input the produced number to the species of the indentified bacteria will be known.
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