Abstract
The correlation between the clinical course and isolated organisms in 174 cases of the odontogenic infection was studied. One hundred seventy-four cases were expediently divided into two groups by clinical features and courses. These were (1) acute inflammation type, and (2) chronic inflammation type.
Two hundred eighty-six strains were isolated from pus in 132 cases of the acute inflammation type. They mainly consisted of Bacteroides (84 strains), Streptococcus (31 strains) and Peptostreptococcus (31 strains) . On the contrary, out of 80 strains in 40 cases of the chronic inflammation type, 29 of Bacteroides, 16 of Streptococcus and 14 of Actinomyces were isolated. Bacteroides equally affected both of acute and chronic inflammation types. Streptococcus and Peptostreptococcus were found to be more dominant in acute inflammation type than in chronic inflammation type. Actinomyces was more dominant in chronic inflammation type. It is thought that the causative organisms are different at the stage when dental infection occurs.
