ACTINOBACILLUS-ACTINOMYCETEMCOMITANS IN THE HUMAN ORAL MICROFLORA

In this paper, the frequency of the microaerophilic gram-negative bact erium Actinobacillus actinomycetemcomitans (Ac) which is a component o f the normal human oral microflora was investigated. Ac could be culti vated from oral material (molar sulcus and/or mucous membrane of the c heek) from 55 out of 405 healthy adults examined. This overall Ac freq uency of 13.6% corresponds well to the few other reports existing in l iterature. A short discussion about the possible pathogenic potential of Ac is given at the end of the paper.